Table 1 Participant characteristics using the complex samples procedure (N = 12313)
Characteristic variables | Number | Weighting % | (95% CI) |
|---|---|---|---|
Gender | |||
Male | 958 | 48.4 | (47.4–49.4) |
Female | 6355 | 51.6 | (50.6–52.6) |
Age (years) | |||
<17 | 3649 | 29.3 | (25.7–33.2) |
17–18 | 6695 | 55.4 | (51.0–59.6) |
>18 | 1969 | 15.3 | (12.4–18.7) |
Hometown | |||
Shanghai | 6290 | 49.8 | (46.8–52.9) |
Sanming | 3027 | 24.3 | (21.4–27.5) |
Beihai | 2996 | 25.9 | (23.2–28.7) |
School type | |||
Model senior high school | 2371 | 19.0 | (16.0–22.5) |
Common senior high school | 8053 | 64.0 | (60.5–67.4) |
Vocational high school | 1889 | 16.9 | (14.6–19.6) |
Average monthly income per person (CNY*) | |||
<1500 | 3982 | 32.7 | (31.3–34.1) |
1500-2500 | 5281 | 42.5 | (41.4–43.6) |
>2500 | 3050 | 24.8 | (23.7–25.9) |
Experience of premarital sex | |||
Yes | 552 | 4.5 | (4.1–5.5) |
No | 11761 | 95.4 | (95.0–95.9) |
Condom use in sexual debut | |||
Yes | 132 | 25.0 | (21.2–29.1) |
No | 420 | 75.0 | (70.9–78.8) |
Consistent condom use | |||
Yes | 65 | 11.6 | (9.1–14.7) |
No | 487 | 89.5 | (85.0–90.3) |