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1.
PLoS Med ; 19(2): e1003902, 2022 02.
Artigo em Inglês | MEDLINE | ID: mdl-35192606

RESUMO

BACKGROUND: Malnutrition among women of childbearing age is especially prevalent in Asia and sub-Saharan Africa and can be harmful to the fetus during pregnancy. In the most recently available Demographic and Health Survey (DHS), approximately 10% to 20% of pregnant women in India, Pakistan, Mali, and Tanzania were undernourished (body mass index [BMI] <18.5 kg/m2), and according to the Global Burden of Disease (GBD) 2017 study, approximately 20% of babies were born with low birth weight (LBW; <2,500 g) in India, Pakistan, and Mali and 8% in Tanzania. Supplementing pregnant women with micro and macronutrients during the antenatal period can improve birth outcomes. Recently, the World Health Organization (WHO) recommended antenatal multiple micronutrient supplementation (MMS) that includes iron and folic acid (IFA) in the context of rigorous research. Additionally, WHO recommends balanced energy protein (BEP) for undernourished populations. However, few studies have compared the cost-effectiveness of different supplementation regimens. We compared the cost-effectiveness of MMS and BEP with IFA to quantify their benefits in 4 countries with considerable prevalence of maternal undernutrition. METHODS AND FINDINGS: Using nationally representative estimates from the 2017 GBD study, we conducted an individual-based dynamic microsimulation of population cohorts from birth to 2 years of age in India, Pakistan, Mali, and Tanzania. We modeled the effect of maternal nutritional supplementation on infant birth weight, stunting and wasting using effect sizes from Cochrane systematic reviews and published literature. We used a payer's perspective and obtained costs of supplementation per pregnancy from the published literature. We compared disability-adjusted life years (DALYs) and incremental cost-effectiveness ratios (ICERs) in a baseline scenario with existing antenatal IFA coverage with scenarios where 90% of antenatal care (ANC) attendees receive either universal MMS, universal BEP, or MMS + targeted BEP (women with prepregnancy BMI <18.5 kg/m2 receive BEP containing MMS while women with BMI ≥18.5 kg/m2 receive MMS). We obtained 95% uncertainty intervals (UIs) for all outputs to represent parameter and stochastic uncertainty across 100 iterations of model runs. ICERs for all scenarios were lowest in Pakistan and greatest in Tanzania, in line with the baseline trend in prevalence of and attributable burden to LBW. MMS + targeted BEP averts more DALYs than universal MMS alone while remaining cost-effective. ICERs for universal MMS compared to baseline IFA were $52 (95% UI: $28 to $78) for Pakistan, $72 (95% UI: $37 to $118) for Mali, $70 (95% UI: $43 to $104) for India, and $253 (95% UI: $112 to $481) for Tanzania. ICERs for MMS + targeted BEP compared to baseline IFA were $54 (95% UI: $32 to $77) for Pakistan, $73 (95% UI: $40 to $104) for Mali, $83 (95% UI: $58 to $111) for India, and $245 (95% UI: $127 to $405) for Tanzania. Study limitations include generalizing experimental findings from the literature to our populations of interest and using population-level input parameters that may not reflect the heterogeneity of subpopulations. Additionally, our microsimulation fuses multiple sources of data and may be limited by data quality and availability. CONCLUSIONS: In this study, we observed that MMS + targeted BEP averts more DALYs and remains cost-effective compared to universal MMS. As countries consider using MMS in alignment with recent WHO guidelines, offering targeted BEP is a cost-effective strategy that can be considered concurrently to maximize benefits and synergize program implementation.


Assuntos
Análise Custo-Benefício/tendências , Proteínas Alimentares/economia , Ácido Fólico/economia , Ferro/economia , Micronutrientes/economia , Cuidado Pré-Natal/economia , Adolescente , Adulto , Estudos de Coortes , Proteínas Alimentares/administração & dosagem , Suplementos Nutricionais/economia , Anos de Vida Ajustados por Deficiência/tendências , Ingestão de Energia , Feminino , Ácido Fólico/administração & dosagem , Humanos , Índia/epidemiologia , Recém-Nascido , Ferro/administração & dosagem , Masculino , Mali/epidemiologia , Micronutrientes/administração & dosagem , Pessoa de Meia-Idade , Paquistão/epidemiologia , Gravidez , Cuidado Pré-Natal/tendências , Tanzânia/epidemiologia , Adulto Jovem
3.
Appl Health Econ Health Policy ; 17(2): 243-254, 2019 04.
Artigo em Inglês | MEDLINE | ID: mdl-30617458

RESUMO

BACKGROUND: In 2009, mandatory folic acid fortification of bread-making flour was introduced in Australia to reduce the birth prevalence of preventable neural tube defects (NTDs) such as spina bifida. Before the introduction of the policy, modelling predicted a reduction of 14-49 NTDs each year. OBJECTIVE: Using real-world data, this study provides the first ex-post evaluation of the cost effectiveness of mandatory folic acid fortification of bread-making flour in Australia. METHODS: We developed a decision tree model to compare different fortification strategies and used registry data to quantify the change in NTD rates due to the policy. We adopted a societal perspective that included costs to industry and government as well as healthcare and broader societal costs. RESULTS: We found 32 fewer NTDs per year in the post-mandatory folic acid fortification period. Mandatory folic acid fortification improved health outcomes and was highly cost effective because of the low intervention cost. The policy demonstrated improved equity in outcomes, particularly in birth prevalence of NTDs in births from teenage and indigenous mothers. CONCLUSIONS: This study calculated the value of mandatory folic acid fortification using real-world registry data and demonstrated that the attained benefit was comparable to the modelled expected benefits. Mandatory folic acid fortification (in addition to policies including advice on supplementation and education) improved equity in certain populations and was effective and highly cost effective for the Australian population.


Assuntos
Farinha/economia , Ácido Fólico/uso terapêutico , Alimentos Fortificados/economia , Programas Obrigatórios/economia , Adolescente , Adulto , Austrália/epidemiologia , Pão/economia , Análise Custo-Benefício , Custos e Análise de Custo , Árvores de Decisões , Feminino , Ácido Fólico/administração & dosagem , Ácido Fólico/economia , Custos de Cuidados de Saúde/estatística & dados numéricos , Humanos , Defeitos do Tubo Neural/economia , Defeitos do Tubo Neural/epidemiologia , Defeitos do Tubo Neural/prevenção & controle , Prevalência , Adulto Jovem
4.
Bipolar Disord ; 20(8): 733-745, 2018 12.
Artigo em Inglês | MEDLINE | ID: mdl-30375699

RESUMO

OBJECTIVES: Although not licensed for acute bipolar depression, lamotrigine has evidence for efficacy in trials and its use is recommended in guidelines. So far there had been no prospective health economic evaluation of its use. METHODS: Cost-utility analysis of the CEQUEL trial comparing quetiapine plus lamotrigine vs quetiapine monotherapy (and folic acid vs placebo in an add-on factorial design) for patients with bipolar depression (n = 201) from the health and social care perspective. Differences in costs together with quality-adjusted life years (QALYs) between the groups were assessed over 52 weeks using a regression-based approach. RESULTS: Health-related quality of life improved substantially for all randomization groups during follow-up with no significant difference in QALYs between any of the comparisons (mean adjusted QALY difference: lamotrigine vs placebo -0.001 (95% CI: -0.05 to 0.05), folic acid vs placebo 0.002 (95% CI: -0.05 to 0.05)). While medication costs in the lamotrigine group were higher than in the placebo group (£647, P < 0.001), mental health community/outpatient costs were significantly lower (-£670, P < 0.001). Mean total costs were similar in the groups (-£180, P = 0.913). CONCLUSIONS: Lamotrigine improved clinical ratings in bipolar depression compared with placebo. This differential effect was not detected using the EQ-5D-3L. The additional cost of lamotrigine was balanced by significant savings in some other medical costs which made its use cost neutral to the health service. Compared to placebo, folic acid produced neither clinical nor significant health economic benefits. The study supports the use of lamotrigine in combination with other drugs to treat bipolar depression.


Assuntos
Transtorno Bipolar/tratamento farmacológico , Transtorno Bipolar/economia , Lamotrigina/administração & dosagem , Lamotrigina/economia , Fumarato de Quetiapina/administração & dosagem , Fumarato de Quetiapina/economia , Antipsicóticos/administração & dosagem , Antipsicóticos/economia , Análise Custo-Benefício , Depressão/tratamento farmacológico , Depressão/economia , Método Duplo-Cego , Quimioterapia Combinada , Feminino , Ácido Fólico/administração & dosagem , Ácido Fólico/economia , Humanos , Masculino , Placebos , Qualidade de Vida , Anos de Vida Ajustados por Qualidade de Vida , Resultado do Tratamento
5.
Ann N Y Acad Sci ; 1414(1): 5-19, 2018 02.
Artigo em Inglês | MEDLINE | ID: mdl-29532514

RESUMO

As infectious disease control programs achieve increasing success, further reductions in child mortality in low- and middle-income countries (LMICs) will require focused prevention strategies for birth defects and other noninfectious diseases. Neural tube defects (NTDs) can cause early death or lifelong disability. Preventing NTDs provides a feasible, significant opportunity to decrease the toll of birth defects and contribute to further reducing child mortality globally. The Micronutrient Forum convened a technical consultation on Folate Status in Women and Neural Tube Defects Prevention to develop a roadmap to inform and prioritize investments in NTD prevention in LMICs; help guide implementation efforts in terms of the feasibility of interventions and the potential for acceleration; and identify research and knowledge gaps. Here, we describe the impetus for and approach to the consultation and present the conclusions and a framework for developing a roadmap for action to accelerate NTD prevention in LMICs. The framework (1) provides options for action on folate status assessment; (2) outlines a way forward to develop and implement a time-bound global action plan for NTD prevention; and (3) identifies common impediments to NTD prevention, broad strategies to overcome or minimize these impediments, and basic building blocks necessary to accelerate action.


Assuntos
Ácido Fólico/sangue , Defeitos do Tubo Neural/prevenção & controle , Adolescente , Países em Desenvolvimento , Monitoramento Epidemiológico , Eritrócitos/metabolismo , Feminino , Ácido Fólico/administração & dosagem , Ácido Fólico/economia , Alimentos Fortificados/economia , Humanos , Lactente , Recém-Nascido , Masculino , Defeitos do Tubo Neural/sangue , Defeitos do Tubo Neural/epidemiologia , Gravidez , Fatores de Risco , Vitamina B 12/administração & dosagem
6.
Ann N Y Acad Sci ; 1414(1): 72-81, 2018 02.
Artigo em Inglês | MEDLINE | ID: mdl-29363765

RESUMO

There is compelling evidence that neural tube defects can be prevented through mandatory folic acid fortification. Why, then, is an investment case needed? At the core of the answer to this question is the notion that governments and individuals have limited resources for which there are many competing claims. An investment case compares the costs and benefits of folic acid fortification relative to alternative life-saving investments and informs estimates of the financing required for implementation. Our best estimate is that the cost per death averted through mandatory folic acid fortification is $957 and the cost per disability-adjusted life year is $14.90. Both compare favorably to recommended life-saving interventions, such as the rotavirus vaccine and insecticide-treated bed nets. Thus, there is a strong economic argument for mandatory folic acid fortification. Further improvements to these estimates will require better data on the costs of implementing fortification and on the costs of improving compliance where regulations are already in place.


Assuntos
Ácido Fólico/administração & dosagem , Ácido Fólico/economia , Alimentos Fortificados/economia , Defeitos do Tubo Neural/prevenção & controle , Análise Custo-Benefício , Países em Desenvolvimento/economia , Feminino , Humanos , Recém-Nascido , Masculino , Defeitos do Tubo Neural/economia , Defeitos do Tubo Neural/mortalidade , Gravidez , Anos de Vida Ajustados por Qualidade de Vida
7.
Pharmacoeconomics ; 36(3): 289-299, 2018 03.
Artigo em Inglês | MEDLINE | ID: mdl-29178025

RESUMO

The National Institute for Health and Care Excellence (NICE) invited the manufacturer (Shire Pharmaceuticals) of pegylated liposomal irinotecan hydrochloride trihydrate (liposomal irinotecan) to submit clinical and cost-effectiveness evidence for its use in combination with 5-fluorouracil (5-FU) and folic acid/leucovorin (LV) for treating patients with pancreatic cancer following prior treatment with gemcitabine as part of the institute's Single Technology Appraisal process. The Liverpool Reviews and Implementation Group at the University of Liverpool was commissioned to act as the Evidence Review Group (ERG). This article presents a summary of the company's evidence, the ERG review and the resulting NICE guidance (TA440), issued on 26 April 2017. Clinical evidence for liposomal irinotecan + 5-FU/LV versus 5-FU/LV was derived from 236 patients with metastatic pancreatic cancer in the multinational, open-label, randomised controlled NAPOLI-1 trial. Results from analyses of progression-free survival and overall survival showed statistically significant improvements for patients treated with liposomal irinotecan + 5-FU/LV compared with those treated with 5-FU/LV. However, 5-FU/LV alone is rarely used in National Health Service clinical practice for patients with metastatic pancreatic cancer previously treated with gemcitabine. The company, ERG and Appraisal Committee (AC) all agreed that oxaliplatin + 5-FU/LV is the most commonly used treatment. Oxaliplatin + 5-FU/LV was compared with 5-FU/LV in two trials identified by the company. However, the company and the ERG both considered attempts to compare the efficacy of liposomal irinotecan + 5-FU/LV with oxaliplatin + 5-FU/LV to be methodologically flawed; not only was there heterogeneity between trials and their populations but also the proportional hazards assumption required to conduct a robust indirect treatment comparison (ITC) was violated. Nonetheless, data derived from an ITC were used to inform the company's economic model. Using the discounted patient access scheme price for liposomal irinotecan + 5-FU/LV, the company reported an incremental cost-effectiveness ratio (ICER) per quality-adjusted life-year (QALY) gained of £54,412 for the comparison with oxaliplatin + 5-FU/LV. The ERG considered that the company's base-case cost-effectiveness results for the comparison of liposomal irinotecan + 5-FU/LV versus oxaliplatin + 5-FU/LV were underestimates and should be interpreted with extreme caution. Following implementation of a number of model amendments, the ERG's modified exploratory ICER for the comparison of liposomal irinotecan + 5-FU/LV versus oxaliplatin + 5-FU/LV was £106,898 per QALY gained. The AC accepted the majority of the ERG's amendments to the model, and also highlighted that the total QALYs for oxaliplatin + 5-FU/LV were lower than for 5-FU/LV in the company's model, which the AC considered to be clinically implausible. The AC therefore considered results from exploratory analyses, undertaken by the ERG, which included altering the QALY difference between liposomal irinotecan + 5-FU/LV and oxaliplatin + 5-FU/LV by ± 10%. These analyses resulted in ICERs for the comparison of liposomal irinotecan + 5-FU/LV versus oxaliplatin + 5-FU/LV of between £201,019 per QALY gained to liposomal irinotecan + 5-FU/LV being dominated by oxaliplatin + 5-FU/LV. Therefore, despite uncertainty around the clinical-effectiveness evidence and cost-effectiveness results, the AC was confident that the ICER was in excess of £50,000 per QALY gained. The final guidance issued by NICE is that liposomal irinotecan + 5-FU/LV is not recommended within its marketing authorisation for treating metastatic adenocarcinoma of the pancreas in adults whose disease has progressed after gemcitabine-based therapy.


Assuntos
Análise Custo-Benefício/estatística & dados numéricos , Irinotecano/economia , Neoplasias Pancreáticas/economia , Avaliação da Tecnologia Biomédica/estatística & dados numéricos , Protocolos de Quimioterapia Combinada Antineoplásica/economia , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Fluoruracila/economia , Fluoruracila/uso terapêutico , Ácido Fólico/economia , Ácido Fólico/uso terapêutico , Humanos , Irinotecano/uso terapêutico , Leucovorina/economia , Leucovorina/uso terapêutico , Neoplasias Pancreáticas/tratamento farmacológico , Inibidores da Topoisomerase I/economia , Inibidores da Topoisomerase I/uso terapêutico
8.
Matern Child Nutr ; 14 Suppl 5: e12532, 2018 12.
Artigo em Inglês | MEDLINE | ID: mdl-29271115

RESUMO

In order to inform large scale supplementation programme design, we review and summarize the barriers and enablers for improved coverage and utilization of iron and folic acid (IFA) supplements by pregnant women in 7 countries in Africa and Asia. Mixed methods were used to analyse IFA supplementation programmes in Afghanistan, Bangladesh, Indonesia, Ethiopia, Kenya, Nigeria, and Senegal based on formative research conducted in 2012-2013. Qualitative data from focus-group discussions and interviews with women and service providers were used for content analysis to elicit common themes on barriers and enablers at internal, external, and relational levels. Anaemia symptoms in pregnancy are well known among women and health care providers in all countries, yet many women do not feel personally at risk. Broad awareness and increased coverage of facility-based antenatal care (ANC) make it an efficient delivery channel for IFA; however, first trimester access to IFA is hindered by beliefs about when to first attend ANC and preferences for disclosing pregnancy status. Variable access and poor quality ANC services, including insufficient IFA supplies and inadequate counselling to encourage consumption, are barriers to both coverage and adherence. Community-based delivery of IFA and referral to ANC provides earlier and more frequent access and opportunities for follow-up. Improving ANC access and quality is needed to facilitate IFA supplementation during pregnancy. Community-based delivery and counselling can address problems of timely and continuous access to supplements. Renewed investment in training for service providers and effective behaviour change designs are urgently needed to achieve the desired impact.


Assuntos
Suplementos Nutricionais , Ácido Fólico , Acessibilidade aos Serviços de Saúde , Ferro , Cuidado Pré-Natal , África , Ásia , Suplementos Nutricionais/economia , Suplementos Nutricionais/estatística & dados numéricos , Feminino , Ácido Fólico/administração & dosagem , Ácido Fólico/economia , Ácido Fólico/uso terapêutico , Conhecimentos, Atitudes e Prática em Saúde , Humanos , Ferro/administração & dosagem , Ferro/economia , Ferro/uso terapêutico , Gravidez , Cuidado Pré-Natal/métodos , Cuidado Pré-Natal/estatística & dados numéricos , Atenção Primária à Saúde
9.
Ann N Y Acad Sci ; 1390(1): 14-33, 2017 02.
Artigo em Inglês | MEDLINE | ID: mdl-27723944

RESUMO

Building upon the growing interest and research on genetically modified (GM) biofortification, its socioeconomic potential has been increasingly examined. We conducted two systematic reviews and meta-analyses to provide comprehensive evidence of consumers' willingness to pay (11 economic valuation studies, 64 estimates) and cost-effectiveness/benefits (five economic evaluation studies, 30 estimates). Worldwide, consumers were willing to pay 23.9% more for GM biofortified food crops. Aside from crop and design-related differences, information provision was deemed crucial. Positive information (nutrition and GM benefits) is associated with the highest consumer willingness to pay, compared with negative, objective, and conflicting GM information, especially when negative information was mentioned last. This health intervention would reduce the aggregated micronutrient deficiency burden in Asia (15.6 million disability-adjusted life years (DALYs)) by 12.5-51.4%, at a low cost of USD 7.9-27.8 per DALY in a pessimistic and optimistic scenario, respectively. Given that GM biofortified crops could tackle hidden hunger in a cost-effective and well-accepted way, its implementation is worth pursuing. A case study on folate biofortification further elaborates on the importance of socioeconomic research and the determinants of their market potential.


Assuntos
Biofortificação/economia , Alimentos Fortificados/economia , Oryza/genética , Ásia , Comportamento do Consumidor , Análise Custo-Benefício , Ácido Fólico/economia , Humanos , Manihot , Micronutrientes/deficiência , Solanum tuberosum
10.
BMC Health Serv Res ; 16: 304, 2016 07 26.
Artigo em Inglês | MEDLINE | ID: mdl-27461265

RESUMO

BACKGROUND: Sickle cell disease (SCD) constitutes a major public health problem in sub-Saharan Africa (SSA). Newborn screening and early subsequent clinical intervention can reduce early mortality and increase life expectancy, but have not been widely implemented in SSA. This analysis assesses the cost-effectiveness of a newborn screening and prophylactic intervention (NSPI) package for SCD in 47 SSA countries. METHODS: A lifetime Markov model with annual cycles was built with infants either being screened using isoelectric focusing (IEF) or not screened. Confirmed positive cases received interventions including insecticide-treated mosquito bed nets, folic acid supplementation, prophylactic antimalarial and penicillin therapy, and vaccinations against bacterial infections. Estimates for the local incidence of SCD, the life expectancy of untreated children, the SCD disability weight, and the cost of screening laboratory tests were based on published sources. Among treated infants, the annual probability of mortality until 30 years of age was derived from a pediatric hospital-based cohort. The outcome of interest included a country-specific cost per Disability Adjusted Life Year (DALY) averted. RESULTS: Of 47 modeled countries in SSA, NSPI is almost certainly highly cost-effective in 24 countries (average cost per DALY averted: US$184); in 10 countries, it is cost-effective in the base case (average cost per DALY averted: US$285), but the results are subject to uncertainty; in the remaining 13, it is most likely not cost-effective. We observe a strong inverse relationship between the incidence rate of SCD and the cost per DALY averted. Newborn screening is estimated to be cost-effective as long as the incidence rate exceeds 0.2-0.3 %, although in some countries NSPI is cost-effective at incidence rates below this range. In total, NSPI could avert over 2.4 million disability adjusted life years (DALYs) annually across SSA. CONCLUSIONS: Using IEF to screen all newborns for SCD plus administration of prophylactic interventions to affected children is cost-effective in the majority of countries in SSA.


Assuntos
Anemia Falciforme/prevenção & controle , Triagem Neonatal/métodos , Adolescente , África Subsaariana , Anemia Falciforme/economia , Antimaláricos/economia , Antimaláricos/uso terapêutico , Criança , Pré-Escolar , Análise Custo-Benefício , Ácido Fólico/administração & dosagem , Ácido Fólico/economia , Humanos , Incidência , Lactente , Recém-Nascido , Expectativa de Vida , Malária/prevenção & controle , Triagem Neonatal/economia , Anos de Vida Ajustados por Qualidade de Vida , Estudos Retrospectivos
11.
BMC Pregnancy Childbirth ; 15: 125, 2015 May 28.
Artigo em Inglês | MEDLINE | ID: mdl-26018633

RESUMO

BACKGROUND: Absence of cost-effectiveness (CE) analyses limits the relevance of large-scale nutrition interventions in low-income countries. We analyzed if the effect of invitation to food supplementation early in pregnancy combined with multiple micronutrient supplements (MMS) on infant survival represented value for money compared to invitation to food supplementation at usual time in pregnancy combined with iron-folic acid. METHODS: Outcome data, infant mortality (IM) rates, came from MINIMat trial (Maternal and Infant Nutrition Interventions, Matlab, ISRCTN16581394). In MINIMat, women were randomized to early (E around 9 weeks of pregnancy) or usual invitation (U around 20 weeks) to food supplementation and daily doses of 30 mg, or 60 mg iron with 400 µgm of folic acid, or MMS with 15 micronutrients including 30 mg iron and 400 µgm of folic acid. In MINIMat, EMMS significantly reduced IM compared to UFe60F (U plus 60 mg iron 400 µgm Folic acid). We present incremental CE ratios for incrementing UFe60F to EMMS. Costing data came mainly from a published study. RESULTS: By incrementing UFe60F to EMMS, one extra IM could be averted at a cost of US$907 and US$797 for NGO run and government run CNCs, respectively, and at US$1024 for a hypothetical scenario of highest cost. These comparisons generated one extra life year (LY) saved at US$30, US$27, and US$34, respectively. CONCLUSIONS: Incrementing UFe60F to EMMS in pregnancy seems worthwhile from health economic and public health standpoints. TRIAL REGISTRATION: Maternal and Infant Nutrition Interventions, Matlab; ISRCTN16581394 ; Date of registration: Feb 16, 2009.


Assuntos
Análise Custo-Benefício/estatística & dados numéricos , Suplementos Nutricionais/economia , Mortalidade Infantil , Micronutrientes/economia , Fenômenos Fisiológicos da Nutrição Pré-Natal , Adulto , Bangladesh , Feminino , Ácido Fólico/economia , Ácido Fólico/uso terapêutico , Humanos , Lactente , Recém-Nascido , Ferro/economia , Ferro/uso terapêutico , Micronutrientes/uso terapêutico , Gravidez
12.
Health Technol Assess ; 18(48): vii-viii, 1-159, 2014 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-25052890

RESUMO

BACKGROUND: Folate deficiency is associated with depression. Despite the biological plausibility of a causal link, the evidence that adding folate enhances antidepressant treatment is weak. OBJECTIVES: (1) Estimate the clinical effectiveness and cost-effectiveness of folic acid as adjunct to antidepressant medication (ADM). (2) Explore whether baseline folate and homocysteine predict response to treatment. (3) Investigate whether response to treatment depends on genetic polymorphisms related to folate metabolism. DESIGN: FolATED (Folate Augmentation of Treatment - Evaluation for Depression) was a double-blind and placebo-controlled, but otherwise pragmatic, randomised trial including cost-utility analysis. To yield 80% power of detecting standardised difference on the Beck Depression Inventory version 2 (BDI-II) of 0.3 between groups (a 'small' effect), FolATED trialists sought to analyse 358 participants. To allow for an estimated loss of 21% of participants over three time points, we planned to randomise 453. SETTINGS: Clinical - Three centres in Wales - North East Wales, North West Wales and Swansea. Trial management - North Wales Organisation for Randomised Trials in Health in Bangor University. Biochemical analysis - University Hospital of Wales, Cardiff. Genetic analysis - University of Liverpool. PARTICIPANTS: Four hundred and seventy-five adult patients presenting to primary or secondary care with confirmed moderate to severe depression for which they were taking or about to start ADM, and able to consent and complete assessments, but not (1) folate deficient, vitamin B12 deficient, or taking folic acid or anticonvulsants; (2) misusing drugs or alcohol, or suffering from psychosis, bipolar disorder, malignancy or other unstable or terminal illness; (3) (planning to become) pregnant; or (4) participating in other clinical research. INTERVENTIONS: Once a day for 12 weeks experimental participants added 5 mg of folic acid to their ADM, and control participants added an indistinguishable placebo. All participants followed pragmatic management plans initiated by a trial psychiatrist and maintained by their general medical practitioners. MAIN OUTCOME MEASURES: Assessed at baseline, and 4, 12 and 25 weeks thereafter, and analysed by 'area under curve' (main); by analysis of covariance at each time point (secondary); and by multi-level repeated measures (sensitivity analysis): Mental health - BDI-II (primary), Clinical Global Impression (CGI), Montgomery-Åsberg Depression Rating Scale (MADRS), UKU side effects scale, and Mini International Neuropsychiatric Interview (MINI) suicidality subscale; General health - UK 12-item Short Form Health Survey (SF-12), European Quality of Life scale - 5 Dimensions (EQ-5D); Biochemistry - serum folate, B12, homocysteine; Adherence - Morisky Questionnaire; Economics - resource use. RESULTS: Folic acid did not significantly improve any of these measures. For example it gained a mean of just 2.9 quality-adjusted life-days [95% confidence interval (CI) from -12.7 to 7.0 days] and saved a mean of just £48 (95% CI from -£292 to £389). In contrast it significantly reduced mental health scores on the SF-12 by 3.0% (95% CI from -5.2% to -0.8%). CONCLUSIONS: The FolATED trial generated no evidence that folic acid was clinically effective or cost-effective in augmenting ADM. This negative finding is consistent with improving understanding of the one-carbon folate pathway suggesting that methylfolate is a better candidate for augmenting ADM. Hence the findings of FolATED undermine treatment guidelines that advocate folic acid for treating depression, and suggest future trials of methylfolate to augment ADM. TRIAL REGISTRATION: Current Controlled Trials ISRCTN37558856. FUNDING: This project was funded by the NIHR Health Technology Assessment programme and will be published in full in Health Technology Assessment; Vol. 18, No. 48. See the HTA programme website for further project information.


Assuntos
Antidepressivos/uso terapêutico , Depressão/tratamento farmacológico , Ácido Fólico/economia , Ácido Fólico/uso terapêutico , Adulto , Análise Custo-Benefício , Depressão/genética , Feminino , Ácido Fólico/metabolismo , Humanos , Masculino , Polimorfismo Genético , Fatores de Risco , Resultado do Tratamento , País de Gales
13.
J Nutr ; 143(1): 59-66, 2013 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-23223683

RESUMO

The Australian government recently introduced mandatory folic acid fortification of bread to reduce the incidence of neural tube defects (NTDs). The economic evaluation of this policy contained a number of limitations. This study aimed to address the limitations and to reconsider the findings. Cost-effectiveness analysis was used to assess the cost and benefits of mandatory versus voluntary folic acid fortification. Outcomes measures were quality-adjusted life-years (QALYs), life-years gained (LYG), avoided NTD cases, and additional severe neuropathy cases. Costs considered included industry costs and regulatory costs to the government. It was estimated that mandatory fortification would prevent 31 NTDs, whereas an additional 14 cases of severe neuropathy would be incurred. Overall, 539 LYG and 503 QALYs would be gained per year of mandatory compared with voluntary fortification. Mandatory fortification was cost-effective at A$10,723 per LYG and at A$11,485 per QALY. Probabilistic sensitivity analysis showed that at A$60,000 and A$151,000 per QALY, the probability that mandatory fortification was the most cost-effective strategy was 79% and 85%, respectively. Threshold analysis of loss of consumer choice indicated that with a compensation value above A$1.21 [assuming a willingness to pay (WTP) threshold of A$60,000 per QALY] or A$3.19 (assuming a WTP threshold of A$151,000 per statistical life-year) per capita per year mandatory fortification would not be cost-effective. Mandatory fortification was found to be cost-effective; however, inclusion of the loss of consumer choice can change this result. Even with mandatory fortification, mean folate intake will remain below the recommended NTD preventive level.


Assuntos
Pão , Ácido Fólico/administração & dosagem , Alimentos Fortificados , Programas Governamentais , Promoção da Saúde , Programas Obrigatórios , Austrália/epidemiologia , Pão/efeitos adversos , Pão/análise , Pão/economia , Análise Custo-Benefício , Árvores de Decisões , Ácido Fólico/efeitos adversos , Ácido Fólico/economia , Alimentos Fortificados/efeitos adversos , Alimentos Fortificados/economia , Programas Governamentais/economia , Promoção da Saúde/economia , Humanos , Incidência , Programas Obrigatórios/economia , Defeitos do Tubo Neural/economia , Defeitos do Tubo Neural/epidemiologia , Defeitos do Tubo Neural/prevenção & controle , Doenças do Sistema Nervoso Periférico/economia , Doenças do Sistema Nervoso Periférico/epidemiologia , Doenças do Sistema Nervoso Periférico/etiologia , Doenças do Sistema Nervoso Periférico/fisiopatologia , Prevalência , Anos de Vida Ajustados por Qualidade de Vida , Índice de Gravidade de Doença , Deficiência de Vitamina B 12/economia , Deficiência de Vitamina B 12/epidemiologia , Deficiência de Vitamina B 12/fisiopatologia , Programas Voluntários/economia
14.
Ned Tijdschr Geneeskd ; 156(41): A4512, 2012.
Artigo em Holandês | MEDLINE | ID: mdl-23062252

RESUMO

The correct usage of folic acid (FA) supplements to prevent neural tube defects (NTDs) increased from 28% in 1996 to 50% in 2005 and remained stable until 2009. Recent data from national birth defect registries show a decrease of NTD prevalence from 13.2 (per 10,000) in 1997 to 8.3 in 2005 and stabilization up to 2009. It is estimated that between 2005 and 2009 FA supplementation prevented 583 NTD cases. The medical costs thus averted are € 75 M. If the correct usage of FA were to be increased to 70%, another 34 cases per year could be prevented. Part of the gain from continued prevention and other averted costs should be invested beforehand in the promotion of FA supplement usage.


Assuntos
Ácido Fólico/administração & dosagem , Ácido Fólico/economia , Defeitos do Tubo Neural/prevenção & controle , Cuidado Pré-Concepcional/métodos , Complexo Vitamínico B/administração & dosagem , Complexo Vitamínico B/economia , Análise Custo-Benefício , Suplementos Nutricionais , Feminino , Humanos , Defeitos do Tubo Neural/economia , Defeitos do Tubo Neural/epidemiologia , Gravidez
15.
Gac Sanit ; 26(6): 512-8, 2012.
Artigo em Espanhol | MEDLINE | ID: mdl-22459741

RESUMO

OBJECTIVES: To explore the utility of combining health information systems from the Valencia Health Agency to characterize folate supplementation in pregnant women in the autonomous region of Valencia (Spain). METHODS: The cohort comprised women who gave birth during 2009 in hospitals within the Valencian Health Agency. These women were retrospectively followed-up using ABUCASIS electronic medical records and the GAIA electronic prescription system to identify folate consumption in the 3 months before and after conception. RESULTS: In 2009, there were 38,069 births in hospitals of the Valencian Health Agency, of which 37,040 (97.3%) were included for analysis. In 34% of women, at least one folate dispensation was registered with an official prescription form within the periconceptional period (6.6% in the 3 months prior to conception). Dispensation with an official prescription form was associated with older women, free pharmaceutical prescriptions, birth in Spain, antiepileptic medications, and a diagnosis of diabetes. Eight percent of women (23.6% of the folate-treated women) received folates at high doses. CONCLUSIONS: Folate consumption during pregnancy is systematically under-registered by healthcare information systems because health professionals do not use the official prescription form for prescription and dispensation. Database linkage is an inadequate approach to assess folic acid supplementation during pregnancy.


Assuntos
Suplementos Nutricionais , Prescrições de Medicamentos/estatística & dados numéricos , Prescrição Eletrônica/estatística & dados numéricos , Ácido Fólico/administração & dosagem , Sistemas de Informação em Saúde , Gravidez , Aborto Induzido , Aborto Espontâneo/epidemiologia , Adulto , Fatores Etários , Anticonvulsivantes/uso terapêutico , Estudos de Coortes , Diabetes Gestacional/epidemiologia , Prescrições de Medicamentos/economia , Uso de Medicamentos/estatística & dados numéricos , Emigrantes e Imigrantes/estatística & dados numéricos , Epilepsia/tratamento farmacológico , Epilepsia/epidemiologia , Feminino , Ácido Fólico/economia , Seguimentos , Controle de Formulários e Registros , Humanos , Seguro de Serviços Farmacêuticos/estatística & dados numéricos , Defeitos do Tubo Neural/prevenção & controle , Assistência Perinatal/estatística & dados numéricos , Complicações na Gravidez/tratamento farmacológico , Complicações na Gravidez/epidemiologia , Gravidez em Diabéticas/epidemiologia , Estudos Retrospectivos , Espanha , Adulto Jovem
16.
Eur J Pediatr ; 170(11): 1391-400, 2011 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-21594574

RESUMO

Neural tube defects (NTDs) are the second most common group of serious birth defects. Although folic acid has been shown to reduce effectively the risk of NTDs and measures have been taken to increase the awareness, knowledge, and consumption of folic acid, the full potential of folic acid to reduce the risk of NTDs has not been realized in most countries. To understand the economic burden of NTDs and the economic impact of preventing NTDs with folic acid, a systematic review was performed on relevant studies. A total of 14 cost of illness studies and 10 economic evaluations on prevention of NTDs with folic acid were identified. Consistent findings were reported across all of the cost of illness studies. The lifetime direct medical cost for patients with NTDs is significant, with the majority of cost being for inpatient care, for treatment at initial diagnosis in childhood, and for comorbidities in adult life. The lifetime indirect cost for patients with spina bifida is even greater due to increased morbidity and premature mortality. Caregiver time costs are also significant. The results from the economic evaluations demonstrate that folic acid fortification in food and preconception folic acid consumption are cost-effective ways to reduce the incidence and prevalence of NTDs. This review highlights the significant cost burden that NTDs pose to healthcare systems, various healthcare payers, and society and concludes that the benefits of prevention of NTDs with folic acid far outweigh the cost. Further intervention with folic acid is justified in countries where the full potential of folic acid to reduce the risk of NTDs has not been realized.


Assuntos
Efeitos Psicossociais da Doença , Ácido Fólico/uso terapêutico , Defeitos do Tubo Neural/economia , Defeitos do Tubo Neural/prevenção & controle , Cuidado Pré-Natal , Complexo Vitamínico B/uso terapêutico , Análise Custo-Benefício , Feminino , Ácido Fólico/economia , Humanos , Recém-Nascido , Defeitos do Tubo Neural/epidemiologia , Gravidez , Cuidado Pré-Natal/economia , Prevalência , Disrafismo Espinal/economia , Disrafismo Espinal/epidemiologia , Disrafismo Espinal/prevenção & controle , Complexo Vitamínico B/economia
17.
Public Health Nutr ; 13(4): 566-78, 2010 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-19758481

RESUMO

OBJECTIVE: To provide input to Australian and New Zealand government decision making regarding an optimal strategy to reduce the rate of neural tube defects (NTD). DESIGN: Standard comparative health economic evaluation techniques were employed for a set of intervention options for promoting folate/folic acid consumption in women capable of or planning a pregnancy. Evidence of effectiveness was informed by the international literature and costs were derived for Australia and New Zealand. RESULTS: Population-wide campaigns to promote supplement use and mandatory fortification were the most effective at reducing NTD, at an estimated 36 and 31 fewer cases per annum respectively for Australia and New Zealand, representing an 8 % reduction in the current annual NTD rate. Population-wide and targeted approaches to increase supplement use were cost-effective, at less than $AU 12,500 per disability-adjusted life year (DALY) averted ($US 9893, pound 5074), as was extending voluntary fortification. Mandatory fortification was not cost-effective for New Zealand at $AU 138,500 per DALY ($US 109 609, pound 56,216), with results uncertain for Australia, given widely varying cost estimates. Promoting a folate-rich diet was least cost-effective, with benefits restricted to impact on NTD. CONCLUSIONS: Several options for reducing NTD appear to fall well within accepted societal cost-effectiveness norms. All estimates are subject to considerable uncertainty, exacerbated by possible interactions between interventions, including impacts on currently effective strategies. The Australian and New Zealand governments have decided to proceed with mandatory fortification; it is hoped they will support a rigorous evaluation which will contribute to the evidence base.


Assuntos
Análise Custo-Benefício/economia , Ácido Fólico/economia , Alimentos Fortificados/economia , Defeitos do Tubo Neural/prevenção & controle , Complexo Vitamínico B/economia , Adolescente , Adulto , Austrália/epidemiologia , Suplementos Nutricionais/economia , Feminino , Ácido Fólico/administração & dosagem , Seguimentos , Política de Saúde , Humanos , Defeitos do Tubo Neural/economia , Defeitos do Tubo Neural/epidemiologia , Nova Zelândia/epidemiologia , Avaliação de Resultados em Cuidados de Saúde , Gravidez , Avaliação de Programas e Projetos de Saúde , Anos de Vida Ajustados por Qualidade de Vida , Adulto Jovem
18.
J Health Commun ; 14(2): 131-59, 2009 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-19283538

RESUMO

The incidence of neural tube defects (NTDs), serious birth defects of the brain and spine that affect approximately 3,000 pregnancies in the United States each year, can be reduced by 50-70% with daily periconceptional consumption of the B vitamin folic acid. Two studies were designed to assess college women's reactions to and perceptions of potential campaign advertising concepts derived from preproduction formative research to increase folic acid consumption through the use of a daily multivitamin. Study one assessed draft advertising concepts in eight focus groups (N = 71) composed of college-enrolled women in four cities geographically dispersed across the United States. Based on study one results, the concepts were revised and reassessed in study two with a different sample (eight focus groups; N = 73) of college women in the same four cities. Results indicated that participants generally responded favorably to concepts in each of the two studies, and provided insight into individual concepts to increase their overall appeal and effectiveness. The specific findings and implications of these results are discussed.


Assuntos
Publicidade/métodos , Atitude Frente a Saúde , Suplementos Nutricionais/estatística & dados numéricos , Ácido Fólico/uso terapêutico , Promoção da Saúde/métodos , Defeitos do Tubo Neural/prevenção & controle , Marketing Social , Estudantes/psicologia , Saúde da Mulher , Adolescente , Adulto , Suplementos Nutricionais/economia , Feminino , Grupos Focais , Ácido Fólico/economia , Humanos , Gravidez , Avaliação de Programas e Projetos de Saúde , Pesquisa Qualitativa , Autoeficácia , Estados Unidos , Universidades , Adulto Jovem
19.
Public Health Nutr ; 12(4): 455-67, 2009 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-18590584

RESUMO

OBJECTIVE: To quantify the health and economic outcomes associated with changes in folic acid consumption following the fortification of enriched grain products in the USA. DESIGN: Cost-effectiveness analysis. SETTING: Annual burden of disease, quality-adjusted life years (QALY) and costs were projected for four steady-state strategies: no fortification, or fortifying with 140, 350 or 700 microg folic acid per 100 g enriched grain. The analysis considered four health outcomes: neural tube defects (NTD), myocardial infarctions (MI), colon cancers and B12 deficiency maskings. SUBJECTS: The US adult population subgroups defined by age, gender and race/ethnicity, with folate intake distributions from the National Health and Nutrition Examination Surveys (1988-1992 and 1999-2000), and reference sources for disease incidence, utility and economic estimates. RESULTS: The greatest benefits from fortification were predicted in MI prevention, with 16 862 and 88 172 cases averted per year in steady state for the 140 and 700 microg fortification levels, respectively. These projections were between 6261 and 38 805 for colon cancer and 182 and 1423 for NTD, while 15-820 additional B12 cases were predicted. Compared with no fortification, all post-fortification strategies provided QALY gains and cost savings for all subgroups, with predicted population benefits of 266 649 QALY gained and $3.6 billion saved in the long run by changing the fortification level from 140 microg/100 g enriched grain to 700 microg/100 g. CONCLUSIONS: The present study indicates that the health and economic gains of folic acid fortification far outweigh the losses for the US population, and that increasing the level of fortification deserves further consideration to maximise net gains.


Assuntos
Ácido Fólico/economia , Alimentos Fortificados/economia , Infarto do Miocárdio/prevenção & controle , Defeitos do Tubo Neural/prevenção & controle , Adolescente , Adulto , Idoso , Neoplasias do Colo/economia , Neoplasias do Colo/epidemiologia , Neoplasias do Colo/prevenção & controle , Análise Custo-Benefício , Relação Dose-Resposta a Droga , Grão Comestível , Feminino , Ácido Fólico/administração & dosagem , Deficiência de Ácido Fólico/economia , Deficiência de Ácido Fólico/epidemiologia , Política de Saúde , Humanos , Incidência , Masculino , Pessoa de Meia-Idade , Infarto do Miocárdio/economia , Infarto do Miocárdio/epidemiologia , Defeitos do Tubo Neural/economia , Defeitos do Tubo Neural/epidemiologia , Avaliação de Resultados em Cuidados de Saúde , Gravidez , Anos de Vida Ajustados por Qualidade de Vida , Estados Unidos/epidemiologia , Deficiência de Vitamina B 12/economia , Deficiência de Vitamina B 12/epidemiologia , Adulto Jovem
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