Standardized prevalence of overweight, obesity and central obesity in urban Shanghai adults aged 20–74 years in the 1998–2001 and 2007–2008 surveys. Standardized prevalence was calculated by the direct method according to the Chinese population structure in 2000 (Figure 2. A-
C for all participants, Figure 2. D-
F for men and Figure 2. G-
I for women). Differences in standardized proportions (prevalence) between the two time periods were tested using multivariable logistic regression analyses in men or women (adjusted for age), and among total participants (adjusted for sex and age) using the Entry method. Adjusted odds ratios (AORs) and p values were then calculated. Standardized combined prevalence of overweight and obesity and prevalence of central obesity and their 95% CIs in urban Shanghai adults aged 20–74 years in the 1998–2001 and 2007–2008 surveys.