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http://dx.doi.org/10.5351/KJAS.2016.29.7.1329

Reliability of self-reported data for prevalence and health life expectancy studies: comparison with sample cohort DB of National Health Insurance Services  

Kwon, Tae Yeon (Institute for Economic Research, Korea University)
Park, Yousung (Department of Statistics, Korea University)
Publication Information
The Korean Journal of Applied Statistics / v.29, no.7, 2016 , pp. 1329-1346 More about this Journal
Abstract
Korea Health Panel (KHP) data and Korea National Health and Nutrition Examination Survey (KNHANES) data are collected by self-assess and self-report for individual's health status and medical use. Previous studies have claimed that the reliability for prevalence rates and health life expectancies obtained from these data should be validated. National Health Insurance Services in Korea recently released a sample cohort DB that contain all data related to the use of medical facilities for all entire Korea citizens. It has been shown that disease-specific prevalence rates calculated from these data are representative and reliable for the entire population. In this paper, we evaluate the reliability of prevalence rates derived from self-reported data such as KHP and KNHANES by comparing to the prevalence rates from the sample cohort DB. We found that both KHP and KNHANES underestimate prevalence rates and in turn overestimate health life expectancies. Moreover, the general trends of health life expectancies might be distorted (except for the sample cohort DB) because of sampling and non-sampling errors.
Keywords
sample cohort DB; Korea National Health and Nutrition Examination Surveys; Korea Health Panel Data; prevalence rate; health life expectancy;
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