Associations of hypertension burden on subsequent dementia: a population-based cohort study

This study was based on the Korean National Health Insurance Service-Health Screening (NHIS-HealS) cohort released in 2015^12,13. The general health screening program can be applied at least once every 2 years for the entire population of Korean adults aged 40 years or older¹⁴. The cohort consisted of 514,764 Koreans as an initial 2002 cohort and followed subjects through 2013 on data including sociodemographic information, diagnoses based on the 10th revision of the International Classification of Disease-10 (ICD-10) codes, admission, treatment, and National Health Screening data^12,13. National Health Screening is conducted biennially and includes regular blood tests, chest X-rays, physical examinations, and medical history questionnaires. Information on death (date and cause) from Statistics Korea was individually linked using unique personal identification numbers^12,13. This…