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Table 1 Unadjusted demographic characteristics of Chinese adults aged ≥ 18 years: the CHNS 1993–2009

From: Increasing trends in central obesity among Chinese adults with normal body mass index, 1993–2009

  1993 1997 2000 2004 2006 2009
(n= 7274) (n= 8368) (n= 9369) (n= 8948) (n= 8786) (n= 9278)
Women (%) 52.0 51.1 51.6 52.1 52.9 52.4
Age (y, Mean ± SD) 42.1 ± 15.6 43.5 ± 15.8 44.9 ± 15.5 48.0 ± 15.3 49.1 ± 15.1 50.6 ± 15.3