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1.
Artigo em Inglês | MEDLINE | ID: mdl-38845342

RESUMO

INTRODUCTION: We evaluated the comparative efficacy of 6 later-line (≥3) therapies for metastatic colorectal cancer (mCRC) over placebo. We applied a novel statistical method of reconstructing pseudo patient-level data (pseudo-IPD) to inform a network meta-analysis of survival curves that considers shape in addition to scale parameters. METHODS: A literature search yielded 10 phase II/III trials. We digitized all survival curves and applied a novel method incorporating curve coordinates, patients-at-risk, and events reported to generate pseudo-IPD. Using fitted random effects lognormal distributions, we estimated the survival proportions and HRs(95CrI) of progression-free (PFS) and overall survival(OS) over 12 months of follow-up. RESULTS: Compared to placebo, in ascending order, 12-month OS HRs were 0.50(95%CrI = 0.35, 0.69; PFS = 0.11(95%CrI = 0.06, 0.14)) for TAS+bevacizumab; 0.71(95%CrI = 0.51, 0.97; PFS = 0.26(95%CrI = 0.16, 0.41)) for regorafenib; 0.75(95%CrI = 0.61, 0.91; (PFS = 0.24(95%CrI = 0.17, 0.31)) for TAS-102; 0.80(95%CrI = 0.79, 0.90; PFS = 0.18(95%CrI = 0.13, 0.24)) for fruquintinib; 0.83(95%CrI = 0.50, 0.99; PFS = 0.42(95%CrI = 0.20, 0.75)) for atezolizumab+cobimetinib; and 1.03(95%CrI = 0.55, 1.65; PFS = 0.67(95%CrI = 0.29, 1.01)) for atezolizumab. CONCLUSION: In this independent NMA of survival data all later-line mCRC therapies but atezolizumab monotherapy exhibited superiority in 12-month PFS and OS over placebo. TAS+bevacizumab emerged as the most dominant option and may be the preferred choice; with fruquintinib, regorafenib and TAS-102 monotherapy showing statistically significant but lower PFS and OS benefits. REGISTRATION: PROSPERO: CRD42022371953.

2.
J Med Econ ; 27(1): 309-323, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38299454

RESUMO

BACKGROUND: Ebola virus disease (EVD) continues to be a major public health threat globally, particularly in the low-and-middle-income countries (LMICs) of Africa. The social and economic burdens of EVD are substantial and have triggered extensive research into prevention and control. We aim to highlight the impact and economic implications, identify research gaps, and offer recommendations for future economic studies pertaining to EVD. METHOD: We conducted a comprehensive librarian-led search in PubMed/Medline, Embase, Google Scholar, EconLit and Scopus for economic evaluations of EVD. After study selection and data extraction, findings on the impact and economics of EVD were synthesized using a narrative approach, while identifying gaps, and recommending critical areas for future EVD economic studies. RESULTS: The economic evaluations focused on the burden of illness, vaccine cost-effectiveness, willingness-to-pay for a vaccine, EVD funding, and preparedness costs. The estimated economic impact of the 2014 EVD outbreak in Guinea, Liberia, and Sierra Leone across studies ranged from $30 billion to $50 billion. Facility construction and modification emerged as significant cost drivers for preparedness. The EVD vaccine demonstrated cost-effectiveness in a dynamic transmission model; resulting in an incremental cost-effectiveness ratio of about $96 per additional disability adjusted life year averted. Individuals exhibited greater willingness to be vaccinated if it incurred no personal cost, with a minority willing to pay about $1 for the vaccine. CONCLUSIONS: The severe impact of EVD puts pressure on governments and the international community for better resource utilization and re-allocation. Several technical and methodological issues related to economic evaluation of EVD remain to be addressed, especially for LMICs. We recommend conducting cost-of-sequelae and cost-of-distribution analyses in addition to adapting existing economic analytical methods to EVD. Characteristics of the affected regions should be considered to provide evidence-based economic plans and economic-evaluation of mitigations that enhance resource allocation for prevention and treatment.


Ebola virus disease (EVD) is a serious health problem, not only in Africa where there have been outbreaks but in other parts of the world as well. In addition to its severe health implications and resultant death, EVD also poses significant impact across several sectors, including food and agriculture, transportation, education, among others, ultimately impacting the economies of affected countries. While some studies have estimated the economic burden of EVD, there remains questions that need addressing. We conducted a review of published studies to estimate what is known about the economic burden of EVD, identified research gaps. Studies looked at how much money EVD costs in terms of prevention and treatment, while others reported on people's willingness to pay for a vaccine. The estimated economic impact of the 2014 EVD outbreak in Guinea, Liberia, and Sierra Leone ranged from approximately $30 billion to $50 billion across studies. Healthcare facility construction and modification were significant cost factors for response preparedness for EVD outbreaks. While the EVD vaccine showed cost-effectiveness, surveys of people across various regions revealed that more individuals were willing to get vaccinated if it was free, with a minority willing to pay a median of about $1 for the vaccine. The severe impact of EVD puts pressure on governments and the international community to use resources more efficiently. We recommend conducting analyses on the costs of long-term effects of EVD and costs of vaccine and treatment distribution, as well as adapting existing economic methods to the specific characteristics of affected regions. This would help create evidence-based economic plans and evaluations of strategies to enhance resource allocation for EVD prevention and treatment.


Assuntos
Doença pelo Vírus Ebola , Vacinas , Humanos , Doença pelo Vírus Ebola/prevenção & controle , Doença pelo Vírus Ebola/epidemiologia , Estresse Financeiro , Serra Leoa/epidemiologia , Guiné/epidemiologia
3.
Urol Oncol ; 42(2): 32.e1-32.e8, 2024 02.
Artigo em Inglês | MEDLINE | ID: mdl-38216444

RESUMO

INTRODUCTION: Deciding on the optimal second-line (2L) treatment for metastatic clear-cell renal cell carcinoma (ccRCC) remains challenging due to the limited information comparing each of the available options and the influence of the newly expanding first-line (1L) agents. PATIENTS AND METHODS: We identified phase II/III randomized controlled trials (RCTs) evaluating 2L treatments in metastatic ccRCC. This Network Meta-analysis (NMA) evaluates the overall survival (OS), progression-free survival (PFS), objective response rate (ORR), and severe adverse events (SAE). We used normal likelihood model to incorporate log hazard ratios (HRs), odds ratios (OR), and 95%-confidence-intervals (CI). Treatment p-scores were used for ranking. Data was analyzed in a fixed-effects model using the netmeta package in R v.1.5-0. RESULTS: All therapies demonstrated some benefits over placebo. Lenvatinib + everolimus ranked first for OS (HR = 0.44; 95%CI = 0.24-0.82; p-score = 0.92), PFS (HR = 0.13; 95%CI = 0.07-0.24, p-score = 0.98), and ORR (OR = 35.95; 95%CI = 11.55-111.87; p-score = 0.93) compared to placebo, though with a higher SAE (OR = 5.27; p-score = 0.23). Cabozantinib ranked second for OS (HR = 0.57, p-score = 0.80), PFS (HR = 0.19; p-score = 0.86), and ORR (OR = 27.24, p-score = 0.84). Nivolumab was third for ORR (p-score = 0.79), fourth for OS (p-score = 0.69), fifth for PFS (p-score = 0.61), and last for SAE (p-score = 0.83). Lenvatinib monotherapy ranked worst SAE (OR = 5.89, p-score = 0.17) and third for OS and PFS. The latest drug, tivozanib, was sixth for PFS, OS, and ORR. The NMA matrix revealed no differential OS benefit between cabozantinib, lenvatinib + everolimus, and nivolumab. Other regimens had no significant OS benefit when compared to placebo. CONCLUSION: Based on OS and PFS, the lenvtatinib + everolimus combination yielded superior, followed by cabozantinib and Lenvatinib monotherapies; all were limited by a worse SAE profile. Nivolumab and pazopanib had the lowest odds of SAEs.


Assuntos
Anilidas , Antineoplásicos , Carcinoma de Células Renais , Neoplasias Renais , Compostos de Fenilureia , Piridinas , Quinolinas , Humanos , Carcinoma de Células Renais/patologia , Antineoplásicos/uso terapêutico , Everolimo/uso terapêutico , Nivolumabe/uso terapêutico , Neoplasias Renais/patologia , Metanálise em Rede
4.
Cancer Causes Control ; 35(1): 9-20, 2024 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-37530986

RESUMO

BACKGROUND: While various interventions have been conducted to decrease cervical cancer's burden in Nigeria, no study has examined the trends in cervical cancer screening uptake over time. The present study sought to fill this gap in knowledge using data collected at Jos University Teaching Hospital (JUTH) in Nigeria. METHODS: Data collected continuously between 2006 and 2016 were analyzed to identify trends in screening uptake, changes in risk factors for cervical cancer, and to identify factors for women screened at Jos University Teaching Hospital (JUTH) in Jos, Nigeria. Categorical analyses and logistic regression models were used to describe patient characteristics by year, and to identify factors associated with repeated screening uptake. RESULTS: A total of 14,088 women who were screened between 2006 and 2016 were included in the database; 2,800 women had more than one screening visit. Overall, screening uptake differed significantly by year. On average women were first screened at age 38. About 2% of women screened were women living with HIV. Most women (86%) had normal pap smear at first screening, with the greatest decreased risk of abnormalities observed between 2011 and 2014. Odds of a follow-up screening after a normal result decreased significantly between 2008 and 2016 compared to women screened in 2006 and 2007. Finally, women living with HIV had increased odds of follow-up screening after having a normal pap smear. CONCLUSIONS: These findings contribute to our understanding of the potential social and health system barriers to cervical cancer control in Nigeria. The findings may assist policy makers to design interventions to increase access and compliance to recommended screening schedules in this vulnerable population.


Assuntos
Infecções por HIV , Neoplasias do Colo do Útero , Feminino , Humanos , Adulto , Masculino , Neoplasias do Colo do Útero/diagnóstico , Neoplasias do Colo do Útero/epidemiologia , Neoplasias do Colo do Útero/prevenção & controle , Esfregaço Vaginal , Detecção Precoce de Câncer , Nigéria/epidemiologia , Teste de Papanicolaou , Programas de Rastreamento , Conhecimentos, Atitudes e Prática em Saúde , Infecções por HIV/epidemiologia
5.
Curr Pharm Teach Learn ; 16(1): 24-33, 2024 01.
Artigo em Inglês | MEDLINE | ID: mdl-38158325

RESUMO

INTRODUCTION: A climate survey was piloted to obtain an understanding of the perceptions and personal experiences of faculty for intentional planning of future meaningful, effective, and sustainable diversity, equity, and inclusion (DEI) efforts at a college of pharmacy. METHODS: A 48-item, four section, online survey was developed and administered to 69 faculty between October and November 2021. Likert-like five-point scales and free-text items were included to determine an overall assessment of climate, as well as perceptions and/or personal experiences for each domain of DEI, and demographics. RESULTS: Thirty-nine (57%) faculty completed the survey. For climate, every attribute had at least one respondent that observed someone make an insensitive or disparaging remark "rarely," "occasionally," and "frequently." The response pattern was similar for personal experience with insensitive remarks. For participation in diversity activities, "awareness without participation" was selected by 56% of respondents. For perceptions of diversity, "fairly" or "very" was selected by 38% to 54% of respondents. For equity, "attainable for some" to "not attainable" was identified for 15% to 26% of respondents. CONCLUSIONS: These pilot climate survey results inform climate improvement as it relates to DEI and informs survey instrument refinement.


Assuntos
Diversidade, Equidade, Inclusão , Farmácia , Humanos , Projetos Piloto , Docentes , Inquéritos e Questionários
6.
BMC Womens Health ; 23(1): 640, 2023 11 30.
Artigo em Inglês | MEDLINE | ID: mdl-38037005

RESUMO

INTRODUCTION: Cervical cancer is the fourth most diagnosed cancer among women globally, with much of the burden being carried by women in limited-resource settings often worsened by the high prevalence of HIV. Furthermore, the COVID-19 pandemic disrupted organized screening efforts and HIV management regimens worldwide, and the impact of these disruptions have not been examined in these settings. The purpose of this paper is to describe whether uptake of cervical cancer screening and HIV management changed before, during, and since the COVID-19 pandemic in North-Central Nigeria. METHODS: Longitudinal healthcare administration data for women who obtained care between January 2018 and December 2021 were abstracted from the AIDS Prevention Initiative Nigeria (APIN) clinic at Jos University Teaching Hospital. Patient demographics, pap smear outcomes, and HIV management indicators such as viral load and treatment regimen were abstracted and assessed using descriptive and regression analyses. All analyses were conducted comparing two years prior to the COVID-19 pandemic, the four quarters in 2020, and the year following COVID-19 restrictions. RESULTS: We included 2304 women in the study, most of whom were between 44 and 47 years of age, were married, and had completed secondary education. About 85% of women were treated with first line highly active retroviral therapy (HAART). Additionally, 84% of women screened using pap smear had normal results. The average age of women who sought care at APIN was significantly lower in Quarter 3, 2020 (p = 0.015) compared to the other periods examined in this study. Conversely, the average viral load for women who sought care during that period was significantly higher in adjusted models (p < 0.0001). Finally, we determined that the average viral load at each clinic visit was significantly associated with the period in which women sought care. CONCLUSIONS: Overall, we found that COVID-19 pandemic mitigation efforts significantly influenced women's ability to obtain cervical cancer screening and routine HIV management at APIN clinic. This study buttresses the challenges in accessing routine and preventive care during the COVID-19 pandemic, especially in low-resource settings. Further research is needed to determine how these disruptions to care may influence long-term health in this and similar at-risk populations.


Assuntos
COVID-19 , Infecções por HIV , Neoplasias do Colo do Útero , Feminino , Humanos , Neoplasias do Colo do Útero/prevenção & controle , Infecções por HIV/diagnóstico , Infecções por HIV/epidemiologia , Esfregaço Vaginal , Detecção Precoce de Câncer/métodos , Nigéria/epidemiologia , Pandemias/prevenção & controle , COVID-19/epidemiologia , Teste de Papanicolaou , Programas de Rastreamento/métodos
7.
Ann Pharmacother ; 57(9): 1016-1024, 2023 09.
Artigo em Inglês | MEDLINE | ID: mdl-36639851

RESUMO

BACKGROUND: The combinations of BRAF + MEK inhibitors-encorafenib (ENC) + binimetinib (BIN), cobimetinib (COB) + vemurafenib (VEM), and dabrafenib (DAB) + trametinib (TRA)-are recommended for the treatment of BRAF-mutated advanced melanoma. OBJECTIVE: To assess the cost-effectiveness and cost-utility of ENC + BIN versus COB + VEM versus DAB + TRA from a US payer perspective. METHODS: A Markov model was constructed to simulate a hypothetical cohort over a time horizon of 10 years. The overall survival (OS) and progression-free survival (PFS) curves were independently digitized from a randomized controlled trial for ENC + BIN and fitted using R software. Published and indirectly estimated hazard ratios were used to fit OS and PFS curves for COB + VEM and DAB + TRA. Costs, life-year gains, and quality-adjusted life years (QALYs) associated with the 3 treatment combinations were estimated. A base case analysis and probabilistic sensitivity analysis (PSA) were conducted to estimate the incremental cost-utility ratio (ICUR). A discount rate of 3.5% was applied on cost and outcomes. RESULTS: The ENC + BIN versus COB + VEM comparison was associated with an ICUR of $656 233 per QALY gained. The ENC + BIN versus DAB + TRA comparison was associated with an ICUR of $3 135 269 per QALY gained. The DAB + TRA combination dominated COB + VEM. The base case analysis estimates were confirmed by the PSA estimates. ENC + BIN was the most cost-effective combination at a high willingness-to-pay (WTP) threshold of $573 000 per QALY and $1.5 million/QALY when compared to COB + VEM and DAB + TRA, respectively. CONCLUSION AND RELEVANCE: Given current prices and acceptable WTP thresholds, our study suggests that DAB + TRA is the optimum treatment. In this study, ENC + BIN was cost-effective only at a very high WTP per QALY threshold.


Assuntos
Melanoma , Proteínas Proto-Oncogênicas B-raf , Humanos , Análise Custo-Benefício , Proteínas Proto-Oncogênicas B-raf/genética , Melanoma/tratamento farmacológico , Melanoma/genética , Mutação , Quinases de Proteína Quinase Ativadas por Mitógeno/genética , Anos de Vida Ajustados por Qualidade de Vida
8.
Support Care Cancer ; 31(1): 16, 2022 Dec 14.
Artigo em Inglês | MEDLINE | ID: mdl-36513917

RESUMO

PURPOSE: Comorbidities can further challenge prognosis and general wellbeing of cancer patients. This study aimed to assess the association between comorbidities and perceived health status (PHS) of US persons with cancer. METHODS: This cross-sectional study used 2019 Medical Expenditure Panel Survey (MEPS) data and included individuals who were alive throughout the year, aged 18 to 84 years, and had diagnosis for cancer. Using adjusted logistic regression models, we estimated the association of comorbidities (no, few [1/2], and more [3 or more] comorbidities) with PHS. Analyses accounted for the complex design of MEPS. RESULTS: The dataset included 28,512 participants, 1739 of which were eligible for the study. Of these, 11.16% (95% CI 9.64, 12.59%); 41.73% (95% CI 39.21, 43.96%); and 47.10% (95% CI 44.86, 49.73%) reported having no, few, and more comorbidities, respectively. While breast (N = 356), prostate (N = 276), and melanoma (N = 273) were the most common cancers, hypertension (88.3%), hypercholesterolemia (49.5%), and arthritis (48%) were the most prevalent comorbidities. Adjusted logistic regression showed that, compared with those with no comorbidities, persons with few and more comorbidities had 1.58 (95% CI = 0.79, 3.15) and 2.27 (95% CI = 1.19, 4.32) times greater odds of poor PHS. Younger or male patients, those with less formal education, low-income, pain, functional limitation, or poor perception of mental health were more likely to regard their health as poor. CONCLUSION: About 88% of persons with history of cancer in the USA aged 18-84 years reported at least one comorbidity. Having more comorbidities, along with several other variables, was associated with poor PHS. Comorbidities management must be given special consideration to improve the prognosis and general wellbeing of persons with cancer.


Assuntos
Nível de Saúde , Neoplasias , Humanos , Masculino , Estudos Transversais , Comorbidade , Neoplasias/epidemiologia , Saúde Mental
9.
J Drug Issues ; 52(3): 421-433, 2022 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-36267164

RESUMO

Background: Historically marginalized youth are at risk for daily substance use. Daily use may be associated with social and environmental factors. Methods: In March 2018, we surveyed primarily Latino adolescents ages 14-18 who lived on the US-Mexico border and assessed associations between daily substance use, neighborhood stress, border community and immigration stress, and family support. Results: Of 443 surveyed adolescents, 41 (9%) reported daily use. Those who used daily were more likely to be older, identify as male, and reported lower social support and higher neighborhood and border community stress compared to those who did not use daily. Perceived neighborhood stress (OR = 1.95, 95% CI 1.37-2.80) and border community and immigration stress (OR = 1.55, 95% CI 1.12-2.02) were associated with increased odds of daily substance use. Discussion: Latino adolescents who live near the US-Mexico border experience unique socioenvironmental stress which is associated with daily substance use.

10.
Diseases ; 10(4)2022 Oct 15.
Artigo em Inglês | MEDLINE | ID: mdl-36278587

RESUMO

Using real-world data, this retrospective cross-sectional study aimed to analyze the association between patient-physician communication and self-reported mental health from cancer patients using publicly available 2019 Medical Expenditure Panel Survey (MEPS) household component data. Four adjusted logistic regression models were conducted to analyze the association between patient-physician communication and self-perceived mental health among United States adult cancer patients, with each model assessing different aspects of patient-physician communication: being respected (respect), being listened to (listen), spending enough time (time), and being explained (explain). The main finding from this study was that only the time model showed a statistical significance, where patients who reported that their physician always spent enough time perceived their mental health as good. Other covariates that showed statistical significance with self-perceived mental health in cancer patients included age, income level, physical limitation, and limitation from pain. In conclusion, there were generally no statistically significant associations between patient-physician communication and mental health among cancer patients.

11.
J Am Pharm Assoc (2003) ; 62(5): 1623-1630.e2, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35637153

RESUMO

BACKGROUND: There are limited data on the psychometric properties of instruments evaluating professional identity (PI) among student pharmacists. OBJECTIVES: This study analyzed the psychometric properties of an instrument to assess student pharmacists' perception of their PI. METHODS: Data from a cross-sectional survey were used to establish validity and reliability evidence of student pharmacists' perception of PI using Rasch analysis. Linear regression was conducted to evaluate the association of students' characteristics with their perceived PI. Analyses were conducted in WINSTEPS (SWREG, Minnetonka, MN) and SAS (SAS, Cary, NC). RESULTS: The analysis included 118 student pharmacists. Primary analysis suggested inadequate scale functionality; thus, some response categories were merged. With modified item anchors and the removal of the most misfitting item, the data fit the model as measured by student and item infit and outfit mean-squared values. The item-person map showed appropriate distribution of item difficulty, identifying medicine adviser and entrepreneur being the easiest and hardest items to agree with, respectively. Students' abilities initially mismatched with item difficulty and exhibited a ceiling effect, requiring addition of items reflecting students' higher perceptions of PIs. Although students' reliability coefficient (RC) and separation index were 0.98 and 1.73, respectively, RC of the items was 0.94. Students who reported receiving formal PI training were 0.3 times more likely to have high perception of PI than those who did not report training. CONCLUSION: The instrument exhibited fair validity and reliability evidence for assessing the perception of PI among student pharmacists. Additional items to fill identified item gaps are needed to improve the instrument's content validity.


Assuntos
Farmacêuticos , Estudantes de Farmácia , Estudos Transversais , Humanos , Percepção , Psicometria , Reprodutibilidade dos Testes , Inquéritos e Questionários
13.
J Med Econ ; 24(sup1): 34-41, 2021 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-34866529

RESUMO

OBJECTIVES: To demonstrate how medical purchasing power parities (mPPP) may harmonize economic evaluations from different jurisdictions and enable comparisons across jurisdictions. METHODS: We describe the use of mPPPs and illustrate this with an example of economic evaluations of nab-paclitaxel with gemcitabine (Nab-P + Gem) versus gemcitabine monotherapy in the setting of metastatic pancreatic cancer. Following a literature search, we extracted data from cost-effectiveness studies on these treatments performed in various countries. mPPPs from the Organization for Economic Co-operation and Development were used to convert reported costs in the jurisdiction of origins to US dollars for the most current year using two possible pathways: (1) reported costs first adjusted by mPPP then adjusted by exchange index; and (2) reported costs first adjusted by exchange index then adjusted by mPPP. RESULTS: Despite many of the pharmaco-economic evaluations sharing similar assumptions and inputs, even after mPPP conversion, residual heterogeneity was attributable to perspectives, discount rate, outcomes, and costs, among others; including in studies conducted in the same jurisdiction. CONCLUSION: Despite the methodological challenges and heterogeneity within and across jurisdictions, we demonstrated that mPPP offers a way to compare economic evaluations across jurisdictions.


Assuntos
Neoplasias Pancreáticas , Análise Custo-Benefício , Humanos
14.
J Med Econ ; 24(sup1): 1-13, 2021 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-34866541

RESUMO

BACKGROUND: With the increasing occurrence of infectious diseases in lower-and-middle-income countries (LMICs), emergency preparedness is essential for rapid response and mitigation. Economic evaluations of mitigation technologies and strategies have been recommended for inclusion in emergency preparedness plans. We aimed to perform an economic evaluation using dynamic transition modeling of ebola virus disease (EVD) vaccination in a hypothetical community of 1,000 persons in the Democratic Republic of Congo (DRC). METHOD: Using a modified SEIR (Susceptible, Exposed, Infectious, Recovered, with Death added [SEIR-D]) model that accounted for death and epidemiological data from an EVD outbreak in the DRC, we modeled the transmission of EVD in a hypothetical population of 1,000. With our model, we estimated the cost-effectiveness of an EVD vaccine and an EVD vaccination intervention. RESULTS: The results showed vaccinating 50% of the population at risk prevented 670 cases, 538 deaths, and 22,022 disability-adjusted life years (DALYs). The vaccine was found to be cost-effective with an incremental cost-effectiveness ratio (ICER) of $95.63 per DALY averted. We also determined the minimum required vaccination coverage for cost-effectiveness to be 40%. Sensitivity analysis showed our model to be fairly robust, assuring relatively consistent results even with variations in such input parameters as cost of screening, as well as transmission, infection, incubation, and case fatality rates. CONCLUSION: EVD vaccination in our hypothetical population was found to be cost-effective from the payer perspective. Our model presents an efficient and reliable approach for conducting economic evaluations of infectious disease interventions as part of an emergency preparedness plan.


PLAIN LANGUAGE SUMMARYInfectious diseases affect lower-and-middle-income (LMIC) countries, with their limited resources, disproportionately more. This is certainly the case for ebola virus disease (EVD), a rare, severe, and mostly fatal disease. Vaccination is now available, but whether it is cost-effective remains an open question. We evaluated its cost-effectiveness by modeling the spread of EVD in a hypothetical population of 1000 persons. Using data from an EVD outbreak in the Democratic Republic of Congo (DRC), we estimated how many of persons susceptible to infection were exposed to the virus, became infected, recovered, or died. We did so for two scenarios: vaccinating versus not vaccinating enough people to achieve herd immunity. We assumed vaccinating 50% of the people and estimated how many infections, deaths, and disability-adjusted life years (DALY; the loss of the equivalent of a year of full health) would be prevented by vaccination. Our cost-effectiveness metric was the incremental cost of preventing one DALY.The outcomes of vaccination offset the additional costs. Vaccinating 50% of the population of 1000 cost an additional $2,081,358 but prevented 670 infections, 538 deaths, and 22022 DALYs. Preventing one DALY cost $95.63. This is very cost-effective as it is less than the gross domestic product (GDP) per capita for the DRC of $556.81. Vaccination below 40% of the population was less cost-effective, was most cost-effective at the herd immunity threshold of 45.3%, beyond which there were diminishing returns. Summarized, vaccination against EVD is clinically very effective and certainly worth the additional cost.


Assuntos
Ebolavirus , Doença pelo Vírus Ebola , Análise Custo-Benefício , Países em Desenvolvimento , Anos de Vida Ajustados por Deficiência , Doença pelo Vírus Ebola/epidemiologia , Doença pelo Vírus Ebola/prevenção & controle , Humanos , Vacinação
15.
Leuk Res ; 111: 106734, 2021 12.
Artigo em Inglês | MEDLINE | ID: mdl-34735932

RESUMO

BACKGROUND: Although adherence to imatinib is critical for attaining treatment responses in chronic myeloid leukemia, there is evidence of varying adherence among patients. Our aim was to model and determine the margin of tolerance, if any, required to ensure treatment responses among patients prescribed imatinib before treatment response is at risk. METHOD: We performed post hoc analyses of the ADAGIO study conducted in Belgium on 169 evaluable patients (Blood 2009). Applying Kaplan-Meier methods using adherence instead of the conventional time variable, we modeled the likelihood of complete cytogenetic (CCyR), complete hematological (CHR), major molecular (MMR) and optimal (OR) response as a function of 90-day pill count adherence. RESULTS: Analyses showed that ∼100 % adherence of prescribed dose is associated with probabilities of 0.84 for CHR, 0.83 for CCyR, 0.82 for OR, and 0.77 for MMR; compared to, 0.37 (CHR and CCyR), 0.35 (OR), and 0.39 (MMR) at 90 % adherence. Increasing intake of imatinib from 90 % to 100 % of the prescribed dose increased the likelihood of the various treatment responses by 1.95-2.35-fold. CONCLUSION: There is virtually no margin for nonadherence, if the objective is to optimize the likelihood of treatment response, and a minimal margin to avoid impaired treatment response.


Assuntos
Antineoplásicos/administração & dosagem , Mesilato de Imatinib/administração & dosagem , Leucemia Mielogênica Crônica BCR-ABL Positiva/tratamento farmacológico , Adesão à Medicação/estatística & dados numéricos , Modelos Estatísticos , Seguimentos , Humanos , Estudos Prospectivos , Fatores de Risco , Resultado do Tratamento
16.
J Clin Pharm Ther ; 44(5): 701-707, 2019 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-31074041

RESUMO

WHAT IS KNOWN AND OBJECTIVE: Hypertension and hyperlipidaemia have high prevalence among diabetics and increase patients' risk of cardiovascular diseases, ultimately affecting prognosis negatively. Medicine claims data have gained prominence in the study of drug-related events and outcomes. There is paucity of publications on the time-to-onset of treatment for these conditions among South African diabetics using secondary data. This study aims to determine the time-to-onset of treatment for hypertension and hyperlipidaemia among diabetics using a South African medicine claims data. METHODS: Survival analysis was conducted using retrospective data of patients enrolled continuously with a Pharmaceutical Benefit Management (PBM) company in South Africa from 1 January 2008 to 31 December 2016. We identified patients based on International Classification of Diseases, Tenth Revision (ICD-10) diagnoses codes for type 2 diabetes mellitus (E11) who were receiving antidiabetic medication according to the National Pharmaceutical Product Index (NAPPI) codes provided by the Monthly Index of Medical Specialities (MIMS) classification code 19.1 (N = 2996). Among these patients, we then selected those who had ICD-10 codes for hypertension (I10, I11, I12, I13, I15, O10 and O11) who were receiving antihypertensive medications, and those who had hyperlipidaemia (E78.5), who received antihyperlipidaemics during the study period. Data were extracted using SAS® system version 9.4 classification codes. The Kaplan-Meier approach, used to compare the survival experience of patients who commenced treatment for hypertension and hyperlipidaemia, was conducted using IBM® SPSS® version 25. The time to the commencement of treatment of hypertension and hyperlipidaemia among the diabetics were measured in days. With 2008 serving as the index year, we followed up on patients until 31 December 2016. RESULTS AND DISCUSSION: A total of 494 patients with an average age of 53.5 (SD 11.1) years were included in the study, 34.8% of whom were females. Prevalence of hyperlipidaemia and hypertension among patients were 35.0% and 45.6%, respectively. Average time-to-onset of treatment for hyperlipidaemia was 2684.4 (SD 42.2) days compared to 2434.2 (SD 47.6) days for hypertension. There was no statistically significant difference in age and sex among patients who started treatment for either of these conditions during the study (P = 0.404; Cohen's d = 0.132 for hyperlipidaemia and P = 0.644, Cohen's d = 0.059 for hypertension). WHAT IS NEW AND CONCLUSION: Within an average of 6 years after an index period of 1 year free of disease, diabetics may commence treatment for hyperlipidaemia, hypertension or both. With all significant data appropriately captured, medicine claims data can be effectively used in survival analysis to determine time-to-onset of treatment for hyperlipidaemia and hypertension among diabetics.


Assuntos
Anti-Hipertensivos/uso terapêutico , Diabetes Mellitus Tipo 2/fisiopatologia , Hiperlipidemias/tratamento farmacológico , Hipertensão/tratamento farmacológico , Hipoglicemiantes/uso terapêutico , Idoso , Diabetes Mellitus Tipo 2/complicações , Feminino , Humanos , Hiperlipidemias/etiologia , Hipertensão/etiologia , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos , África do Sul , Análise de Sobrevida
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