Body mass index trajectories and all-cause mortality in older Chinese adults: Hong Kong's Elderly Health Service Cohort.

ABSTRACT:

Background

Weight loss at older ages appears to be associated with higher mortality in Western and some East Asian countries, despite differences in the prevalence of obesity; whether it is relevant to China is unknown. We examined the association of body mass index (BMI) trajectories with all-cause mortality in older Chinese adults by sex and baseline age (65-69 years, 70+ years).

Methods

54 160 participants aged 65 or above from Hong Kong's Elderly Health Service Cohort with at least five BMI measurements were included. We identified distinct BMI trajectories using group-based trajectory modelling. We assessed the associations of BMI trajectories with mortality risk using a Cox model stratified by sex and age.

Results

Compared with 'normal weight, stable', the 'low-

SUBMITTER: Kwok MK 

PROVIDER: S-EPMC12418538 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature