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) |
* CNY Chinese Yuan; 6.30 CNY = 1 USD.