Additional file 2: of The cross-interaction between global and age-comparative self-rated health on depressive symptoms–considering both the individual and combined effects

Figure S2. CESD by SRH-global and SRH-age separately, according to the quartile income group. SRH means self-rated health. SRH-global is general self rated health, while SRH-age is age-comparative self –rated health. The vertical axis means the estimates of CESD and the horizontal one is four income categories from low to high group. * p < 0.05 **p < 0.001. (JPG 80 kb)