Univariate statistics of independent variables for the depression and control groups.

The values for the control group are equal to those shown in Table 1 except for those of the homophily variable. The homophily is defined as the fraction of neighbors belonging to the depression group in this table, whereas it is defined as the fraction of neighbors belonging to the suicide group in Table 1. The p-value for the gender is based on the Chi-square test. The p-values for the other variables are based on the Student’s t-test. SD: standard deviation.