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OBJECTIVES: This study aimed to produce Sri Lankan population norms of utility values, EuroQol visual analog scale scores, and reported problems in each domain of the EQ-5D-5L, as well as a disutility catalog, based on a representative set of Sri Lankan preferences. METHODS: Data from a nationally representative sample of 6415 adults from the Sri Lanka Health and Ageing Study in 2018 to 2019 were used. Sri Lankan preferences were applied to EQ-5D-5L scores to produce utility values. Descriptive statistics were produced for responses by EQ-5D-5L dimension, mean utility values, and EuroQol visual analog scale scores, disaggregated by demographic and disease group. Multivariable logistic regression assessed associations with problems in each dimension, and demographic and chronic diseases. Robust ordinary least squares and tobit regressions were performed to estimate the marginal disutility of demographic covariates and disease conditions. RESULTS: The mean utility value for the overall population was 0.867. Utility values decreased with age and increased with increasing education and richer socioeconomic quintiles. Males had higher utility values than females (0.89 vs 0.84; P < .001). Utility values declined by 0.007 with each year increase in age (P < .001) and statistically significant differences (P < .05) in utility were found by ethnicity, socioeconomic quintile, and disease conditions such as stroke, diabetes, cancer, depression, and musculoskeletal conditions, using a tobit regression. CONCLUSIONS: This study provides the first nationally representative set of population norms based on a local value set for key demographic groups and selected chronic disease conditions for Sri Lanka. It also provides a catalog that can be easily used to calculate quality-adjusted life-years for cost-utility analysis when modeling public health interventions.
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INTRODUCTION: This study's objective was to produce robust, comparable estimates of the prevalence of diabetes and pre-diabetes in the Sri Lankan adult population, where previous studies suggest the highest prevalence in South Asia. RESEARCH DESIGN AND METHODS: We used data on 6661 adults from the nationally representative 2018/2019 first wave of the Sri Lanka Health and Ageing Study (SLHAS). We classified glycemic status based on previous diabetes diagnosis, and either fasting plasma glucose (FPG), or FPG and 2-hour plasma glucose (2-h PG). We estimated crude and age-standardized prevalence of pre-diabetes and diabetes and by major individual characteristics weighting the data to account for study design and subject participation. RESULTS: Crude prevalence of diabetes in adults was 23.0% (95% CI 21.2% to 24.7%) using both 2-h PG and FPG, and age-standardized prevalence was 21.8% (95% CI 20.1% to 23.5%). Using only FPG, prevalence was 18.5% (95% CI 7.1% to 19.8%). Previously diagnosed prevalence was 14.3% (95% CI 13.1% to 15.5%) of all adults. The prevalence of pre-diabetes was 30.5% (95% CI 28.2% to 32.7%). Diabetes prevalence increased with age until ages ≥70 years and was more prevalent in female, urban, more affluent, and Muslim adults. Diabetes and pre-diabetes prevalence increased with body mass index (BMI) but was as high as 21% and 29%, respectively, in those of normal weight. CONCLUSIONS: Study limitations included using only a single visit to assess diabetes, relying on self-reported fasting times, and unavailability of glycated hemoglobin for most participants. Our results indicate that Sri Lanka has a very high diabetes prevalence, significantly higher than previous estimates of 8%-15% and higher than current global estimates for any other Asian country. Our results have implications for other populations of South Asian origin, and the high prevalence of diabetes and dysglycemia at normal body weight indicates the need for further research to understand the underlying drivers.
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Diabetes Mellitus , Estado Prediabético , Adulto , Humanos , Femenino , Anciano , Estado Prediabético/epidemiología , Sri Lanka/epidemiología , Glucemia , Prevalencia , Factores de Riesgo , Diabetes Mellitus/diagnóstico , EnvejecimientoRESUMEN
Background: Sri Lanka lacks robust estimates of hypertension (HTN) prevalence owing to few national studies, hindering optimization of control strategies. Evidence on how the revised 2017 American College of Cardiology/American Heart Association (ACC/AHA) HTN definition affects prevalence in low- and middle-income countries (LMICs) is also limited. Objectives: To make robust estimates of HTN prevalence in the Sri Lankan adult population, and to assess impact of the ACC/AHA 2017 definitions. Methods: Data were sourced from the 2018-2019 first wave of the Sri Lanka Health and Ageing Study (SLHAS), a nationally representative longitudinal study of the noninstitutionalized adult population. After excluding those with missing data and aged <18 years, 6,342 participants (95.1%) were included in the analysis. HTN was defined using either the traditional threshold of systolic BP (SBP) ≥140 mmHg or a diastolic BP (DBP) ≥90 mmHg, or the ACC/AHA 2017 threshold of SBP ≥130 mmHg or DBP ≥80 mmHg, or if taking antihypertensive medication. Results: Estimated prevalence of HTN in all Sri Lankan adults was 28.2% using the traditional definition, and it doubled to 51.3% when applying the ACC/AHA 2017 definition. Of those classified as hypertensive according to the older and ACC/AHA 2017 definitions, 53.4% and 31.2%, respectively, were previously diagnosed. Of the 23.2% of adults reclassified as hypertensive by the ACC/AHA 2017 definition, 16.6% had a history of CVD or diabetes. Increased prevalence was associated with urban residence, socioeconomic status, obesity, and Muslim ethnicity. Prevalence increased with age, but the increase was steeper in women from their 30s. Conclusions: Nearly one in three adult Sri Lankans are hypertensive, requiring antihypertensive treatment. Applying the ACC/AHA 2017 definitions almost doubles numbers, but many of those reclassified would require treatment under recent WHO guidelines. Study findings also suggest that design effects in HTN surveys may be higher than usually assumed.
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Antihipertensivos , Hipertensión , Adulto , Antihipertensivos/uso terapéutico , Presión Sanguínea , Femenino , Humanos , Estudios Longitudinales , Prevalencia , Sri Lanka/epidemiología , Estados Unidos/epidemiologíaRESUMEN
OBJECTIVES: More than 80% of cardiovascular diseases (CVD) and diabetes mellitus (DM) burden now lies in low and middle-income countries. Hence, there is an urgent need to identify and implement the most cost-effective interventions, particularly in the resource-constraint South Asian settings. Thus, we aimed to systematically review the cost-effectiveness of individual-level, group-level and population-level interventions to control CVD and DM in South Asia. METHODS: We searched 14 electronic databases up to August 2016. The search strategy consisted of terms related to 'economic evaluation', 'CVD', 'DM' and 'South Asia'. Per protocol two reviewers assessed the eligibility and methodological quality of studies using standard checklists, and extracted incremental cost-effectiveness ratios of interventions. RESULTS: Of the 2949 identified studies, 42 met full inclusion criteria. Critical appraisal of studies revealed 15 excellent, 18 good and 9 poor quality studies. Most studies were from India (n=37), followed by Bangladesh (n=3), Pakistan (n=2) and Bhutan (n=1). The economic evaluations were based on observational studies (n=9), randomised trials (n=12) and decision models (n=21). Together, these studies evaluated 301 policy or clinical interventions or combination of both. We found a large number of interventions were cost-effective aimed at primordial prevention (tobacco taxation, salt reduction legislation, food labelling and food advertising regulation), and primary and secondary prevention (multidrug therapy for CVD in high-risk group, lifestyle modification and metformin treatment for diabetes prevention, and screening for diabetes complications every 2-5 years). Significant heterogeneity in analytical framework and outcome measures used in these studies restricted meta-analysis and direct ranking of the interventions by their degree of cost-effectiveness. CONCLUSIONS: The cost-effectiveness evidence for CVD and DM interventions in South Asia is growing, but most evidence is from India and limited to decision modelled outcomes. There is an urgent need for formal health technology assessment and policy evaluations in South Asia using local research data. PROSPERO REGISTRATION NUMBER: CRD42013006479.
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Enfermedades Cardiovasculares , Diabetes Mellitus Tipo 2 , Adolescente , Adulto , Anciano , Asia , Enfermedades Cardiovasculares/economía , Enfermedades Cardiovasculares/prevención & control , Análisis Costo-Beneficio , Estudios Transversales , Diabetes Mellitus Tipo 2/economía , Diabetes Mellitus Tipo 2/prevención & control , Femenino , Heparina , Humanos , Encuestas Nutricionales , Estudios Prospectivos , Calidad de VidaRESUMEN
OBJECTIVES: Earlier treatment of publicly funded patients may achieve health gains that justify the additional costs of reducing waiting times. This study reports on the cost-effectiveness of implementing a private contracting model to meet alternative maximum waiting time targets for publicly funded patients undergoing total knee replacement surgery in Australia. METHODS: A linked decision tree and cohort Markov model was developed and populated and validated using secondary data sources to represent the pathways, costs, and quality adjusted life-years (QALYs) gained of non-urgent patients with alternative waiting times for total knee replacement surgery to a maximum age of 100 years. RESULTS: Assuming public waiting times are reduced through the purchase of private services, additional QALYs are gained at an incremental cost of less than $40,000. Value could be increased if lower private prices could be negotiated. Results are also sensitive to the rate of deterioration in function while waiting for surgery and the impact of functional status at the time of surgery on postsurgery outcomes. CONCLUSIONS: More evidence on the value of expanded capacity or new models of care may inform new funding models to support such investments and reduced prices for new technologies, leading to more efficient and sustainable publicly funded healthcare systems.
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Artroplastia de Reemplazo/economía , Sector Privado/economía , Listas de Espera , Adulto , Anciano , Anciano de 80 o más Años , Artroplastia de Reemplazo/mortalidad , Australia , Análisis Costo-Beneficio , Árboles de Decisión , Femenino , Recursos en Salud/economía , Recursos en Salud/estadística & datos numéricos , Estado de Salud , Humanos , Masculino , Cadenas de Markov , Persona de Mediana Edad , Osteoartritis/cirugía , Años de Vida Ajustados por Calidad de Vida , Factores de TiempoRESUMEN
Our study estimated salt intake, examined the association between blood pressure (BP) and salt intake, and explored the socioeconomic variations in salt intake among administrators (government employees). This is a cross-sectional study. We studied 168 randomly selected administrators aged 30-60 years attached to government offices in Colombo, Sri Lanka. Self-administered questionnaire gathered information on socio-demographic, work-related information, lifestyle practices, and medical history. BP, 24-hour urine collection, and anthropometric indices were measured. Mean salt intake levels measured by 24-hour Sodium (Na) excretion in hypertensives and non-hypertensives were 202.56 (SD ± 85.45) mmol/day and 176.79 (SD ± 82.02) mmol/day, respectively. A 100-mmol increase in sodium was associated with an average increase of 3.1 (95 per cent CI 2-4.2) mmHg in systolic BP and 1.8 (95 per cent CI 0.89-2.6) mmHg in diastolic BP. Higher salt intake was found in managerial assistants (12.38 ± 5.0 g) compared with senior officers (10.84 ± 4.9 g). Salt intake among these administrators was alarmingly high. High salt intake was positively associated with hypertension and more prevalent in lower socioeconomic strata.
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Presión Sanguínea/efectos de los fármacos , Empleados de Gobierno/estadística & datos numéricos , Disparidades en el Estado de Salud , Sodio en la Dieta/administración & dosificación , Adulto , Estudios Transversales , Femenino , Humanos , Hipertensión/epidemiología , Hipertensión/etiología , Masculino , Persona de Mediana Edad , Factores Socioeconómicos , Sodio en la Dieta/efectos adversos , Sri Lanka/epidemiología , Encuestas y CuestionariosRESUMEN
A cross-sectional survey was carried out among 275 and 760 randomly selected senior officers (SOs) and managerial assistants (MAs) aged between 30 and 60 years. Sum of scores of efforts, rewards, and overcommitment and effort-reward ratio assessed job stress. Blood pressure was measured and classified using JNC-7 guidelines. The response rates of SOs and MAs were 98.9% and 97.2%, respectively. The prevalence of job stress based on high effort-rewards imbalance among SOs and MAs was 74.6% and 80.5%, respectively. The prevalence of overcommitment among SOs and MAs was 35.3% and 29%, respectively. Statistically significant differences (P = .05) were observed between the prevalence of effort-reward imbalance and overcommitment among SOs and MAs. Multivariate analysis indicated effort-reward imbalance (odds ratio [OR] = 2.8; 95% confidence interval [CI] = 1.1-7.4), high efforts (OR = 2.5; 95% CI = 1.2-5.3), and overcommitment (OR = 2.5; 95% CI = 1.1-5.6) were significantly associated with hypertension among SOs. Similarly, effort-reward imbalance and high efforts increased the risk of hypertension by 2-fold (OR = 2.2; 95% CI = 1.1-4.2) and 3-fold (OR = 3.02; 95% CI = 1.9-4.8), respectively, among the MAs. A significant number of administrators are afflicted by job stress, and job stress was significantly associated with hypertension.
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Personal Administrativo/psicología , Hipertensión/epidemiología , Estrés Psicológico/psicología , Carga de Trabajo/psicología , Personal Administrativo/estadística & datos numéricos , Adulto , Estudios Transversales , Femenino , Humanos , Persona de Mediana Edad , Análisis Multivariante , Oportunidad Relativa , Recompensa , Sri Lanka/epidemiologíaRESUMEN
INTRODUCTION: While a number of strategies are being implemented to control cardiovascular diseases (CVDs) and type 2 diabetes mellitus (T2DM), the cost-effectiveness of these in the South Asian context has not been systematically evaluated. We aim to systematically review the economic (cost-effectiveness) evidence available on the individual-, group- and population-level interventions for control of CVD and T2DM in South Asia. METHODS AND ANALYSIS: This review will consider all relevant economic evaluations, either conducted alongside randomised controlled trials or based on decision modelling estimates. These studies must include participants at risk of developing CVD/T2DM or with established disease in one or more of the South Asian countries (India, Bangladesh, Pakistan, Sri Lanka, Nepal, Maldives, Bhutan and Afghanistan). We will identify relevant papers by systematically searching all major databases and registries. Selected articles will be screened by two independent researchers. Methodological quality of the studies will be assessed using a modified Drummond and a Phillips checklist. Cochrane guidelines will be followed for bias assessment in the effectiveness studies. RESULTS: Results will be presented in line with the PRISMA (Preferred Reporting Items for Systematic review and Meta-analysis) checklist, and overall quality of evidence will be presented as per the GRADE (Grades of Recommendation, Assessment, Development and Evaluation) approach. ETHICS AND DISSEMINATION: The study has received ethics approval from the All India Institute of Medical Sciences, New Delhi, India. The results of this review will provide policy-relevant recommendations for the uptake of cost-effectiveness evidence in prioritising decisions on essential chronic disease care packages for South Asia. STUDY REGISTRATION NUMBER: PROSPERO CRD42013006479.