Rannan-Eliya, R. P., Dissanayake, V. H., Perera, P., Perera, B., Herath, H. M. M., Wijemunige, N., Dalpatadu, S., Samarage, S., Gamage, A., Jayatissa, R., & Fernando, E. Y. (2024). Cohort Profile: The Sri Lanka Health and Ageing Study (SLHAS). International Journal of Epidemiology, 53(2). https://doi.org/10.1093/ije/dyae044
Abstract
Key Features
- The Sri Lanka Health and Ageing Study (SLHAS) is a nationally representative cohort study of the Sri Lankan population, established to
provide a multidimensional platform to understand and track health and ageing. - The SLHAS aims to undertake periodic surveys every 3–5 years. Wave 1 recruited and interviewed in person 6668 participants of all
adult ages during 2018/19, with adults aged 70 years and older oversampled. - Waves 2 (2021/22) and 2x (2022/23) have interviewed 74% (n ¼ 4904) of participants by telephone, with non-response due to death,
illness, emigration and refusal in an additional 4% (n ¼ 292). The remainder could not be contacted by telephone, but the study expects
to reach most of these in a future field survey. - All waves cover: (i) health and general wellbeing; (ii) social determinants; (iii) health care use; and (iv) work and retirement. Wave 1
undertook physical examinations, collected biomarkers and biobanked blood and urine samples; and Waves 2/2x covered the impacts of
COVID-19, economic crisis and public opinion. - The SLHAS design maximizes comparability with other international surveys, particularly the Health and Retirement Study (HRS) family,
to support cross-national comparisons. - SLHAS will make data available to other researchers, with Wave 1 data to be released from 2024.
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