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. 2020 Dec 30;18(1):208. doi: 10.3390/ijerph18010208

Table 1.

Descriptive statistics.

Variable Mean SD
Suicide attempts (1 = yes) a,b 0.078 -
Perceived social support 61.4 11.9
Self-esteem 26.7 4.0
Depression 48.4 8.3
Gender (1 = male) 0.70 -
Age 32.5 8.0
Education level
Primary or below 0.198 -
Middle school 0.434 -
High school 0.267 -
Junior college or above 0.101 -
Marital status (1 = married) c 0.436 -
Length of drug use 9.2 6.6
Ever experienced abuse (1 = yes) 0.222 -

a The number of valid cases is 1895. b For dummy variables, percentages for category “1” are reported in the cell. c Married includes cohabitation.