Figure 4.
Hazard ratios (HRs) and 95% confidence intervals (CIs) for the effect of residential greenness at different buffers on depression incidence (per IQR increase) among SAGE participants in China (). Model 1 included crude models without controlling for any covariates. Model 2 included models adjusted for the covariates from the DAG, including sex, age, marital status, urbanicity, education, annual family income, and region. A time-dependent Cox proportional hazards regression model was used to analyze the linear relationship. The error bars in the figure are the 95% CI and the dots and triangles are the HR. Table S7 corresponds to this figure. Note: CI, confidence interval; DAG, directed acyclic graph; HR, hazard ratio; IQR, interquartile range; SAGE, Study on Global Ageing and Adult Health.
