biostudies-literatureUnknown22(1)Pan Y<h4>Background</h4>Despite the widespread use of the single item self-rated health (SRH) question, its reliability has never been evaluated in Chinese population.<h4>Methods</h4>We used data from the China Health and Retirement Longitudinal Study, waves 1-4 (2011-2019). In wave 1, the same SRH question was asked twice, separated by other questions, on a subset of 4533 subjects, allowing us to examine the test-retest reliability of SRH. In addition, two versions of SRH questions (the WHO and US versions) were asked (n = 11,429). Kappa (κ), weighted kappa ([Formula: see text]), and polychoric correlation coefficient (ρ) were used for reliability assessment. Cox proportional-hazards models were estimated to assess the predictive validity of SRH measurement for mortality over 7 years of followBMC public health1863https://www.ebi.ac.uk/biostudies/studies/S-EPMC9536015biostudies-literatureReliability and predictive validity of two scales of self-rated health in China: results from China Health and Retirement Longitudinal Study (CHARLS).PMC9536015Pan YPikhart HPikhartova JBobak MfalseReliability and predictive validity of two scales of self-rated health in China: results from China Health and Retirement Longitudinal Study (CHARLS).<h4>Background</h4>Despite the widespread use of the single item self-rated health (SRH) question, its reliability has never been evaluated in Chinese population.<h4>Methods</h4>We used data from the China Health and Retirement Longitudinal Study, waves 1-4 (2011-2019). In wave 1, the same SRH question was asked twice, separated by other questions, on a subset of 4533 subjects, allowing us to examine the test-retest reliability of SRH. In addition, two versions of SRH questions (the WHO and US versions) were asked (n = 11,429). Kappa (κ), weighted kappa ([Formula: see text]), and polychoric correlation coefficient (ρ) were used for reliability assessment. Cox proportional-hazards models were estimated to assess the predictive validity of SRH measurement for mortality over 7 years of follow2022-01-01T00:00:00Z2022 Oct2025-04-04T08:44:48.82Z2025-02-19T00:27:53.363ZS-EPMC95360153619905710.1186/s12889-022-14218-1