Fig. 1From: Temporal trends in the prevalence of metabolic syndrome among middle-aged and elderly adults from 2011 to 2015 in China: the China health and retirement longitudinal study (CHARLS)Age-specific prevalence of metabolic syndrome based on different definitions in 2011 and 2015. Figure a, b, c, and d shows the prevalence of metabolic syndrome between different age groups based on ATP III, IDF, revised ATP III and CDS criteria, respectively. Dotted line represents the baseline wave and a solid line represents the third waveBack to article page