Fig 7

Time-trend of lifetime-ever eczema prevalence and eczematous populations among 13-14 year-old children in the mainland of China. For eczema prevalence in 1995, the surveyed cities were Beijing, Guangzhou, Urumqi, Shanghai, and Chongqing [16], and the national total population of 13-14 year-old children in 1996 was used to estimate the absolute eczematous population because data in 1995 were not available. For 2001, the surveyed cities were Beijing [24], Guangzhou [25], and Lhasa [26]. For 2009, the surveyed cities were Beijing, Guangzhou, and Chongqing [7]. More information for these studies is provided in Table 1