Objective To evaluate the
association of
educational level with anthropometric measurements at different
adult stages and their long-term changes in
adults who participated in the second re-
survey of
China Kadoorie Biobank (CKB).
Methods The present study excluded participants
who were
aged >65 years,with incomplete or extreme measurement values,or with major
chronic diseases at
baseline survey or re-
survey.The weight at age 25 years was
self-reported.
Body height,
body weight and
waist circumference at
baseline survey (2004-2008) and re-
survey (2013-2014) were analyzed.Results The present study included 3 427
men and 6 320
women.Both
body weight and
waist circumference (WC) increased with age.From age 25 years to
baseline survey (mean age 45.2 ± 6.5),the mean weight change per 5-year was (1.70 ± 2.63) kg for
men and (1.27 ± 2.10) kg for
women.From
baseline survey to re-
survey (53.2± 6.5),the mean changes per 5-year for
body weight were (1.12±2.61) kg for
men and 0.90±2.54) kg for
women;and that for WC was (3.20±3.79) cm for
men and (3.83 ± 3.85) cm for
women.Among
women,low
educational level was consistently associated with higher
body mass index (BMI) and WC at age 25 years,
baseline survey and re-
survey.Among
men,low
educational level was associated with higher BMI at age 25 years.At
baseline survey and re-
survey,the
educational level in
men was not statistically associated with BMI;but
men who completed junior or senior
high school showed slight higher WC and increase of WC from
baseline survey to re-
survey than other
male participants.Conclusions
Body weight and WC increased with age for both
men and
women.The
associations of
educational level with BMI and WC were different between
men and
women.