Fig. 2From: Gingival bleeding and calculus among 12-year-old Chinese adolescents: a multilevel analysisPlots of regions residuals with 95%CIs. (a) gingival bleeding and (b) calculus. a: sequencing from left to right: Jinniu District, Guang’an District, Yibin County, Da County, Chuanshan District and Pi County. b: sequencing from left to right: Yibin County, Da County, Guang’an District, Jinniu District, Chuanshan District and Pi CountyBack to article page