Table 1.
Population characteristics |
Pooled sample |
Matched Sample |
---|---|---|
( n = 1,035) (%) | ( n = 975) (%) | |
Sex (male) |
64.0 |
67.4 |
Age (in years) |
|
|
18 to 30 |
4.8 |
7.2 |
31 to 40 |
32.9 |
41.2 |
41 to 49 |
62.3 |
51.6 |
Ethnicity (Han) |
87.3 |
83.3 |
Education (High school education or above) |
32.5 |
31.1 |
Marital status |
|
|
Never married |
38.4 |
42.6 |
Currently married |
29.9 |
31.1 |
Divorced or widowed |
31.7 |
26.3 |
Ever received methadone maintenance treatment (MMT) | 84.7 | 87.9 |