Table 3.
Demographic characteristics, ever sexual intercourse, and physical/psychological symptoms among 15-year-olds: prevalence and means by gender and country
| Boys (n = 2,943) |
Girls (n = 3,168) |
|||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| United States (n = 760) |
Scotland (n = 624) |
Finland (n = 410) |
France (n = 461) |
Poland (n = 688) |
p-Valuea | United States (n = 861) |
Scotland (n = 716) |
Finland (n = 474) |
France (n = 533) |
Poland (n = 584) |
p-Valuea | |
| Prevalence (%) | ||||||||||||
| Family composition | ||||||||||||
| Two biologic parents | 58.2 | 76.8 | 73.2 | 74.8 | 86.1 | <.001 | 56.6 | 70.4 | 70.5 | 78.2 | 86.1 | <.001 |
| Stepfamily | 17.9 | 6.6 | 10 | 9.1 | 2.9 | 15.7 | 9.6 | 9.7 | 8.4 | 4.5 | ||
| Single parent | 21.7 | 14.4 | 15.6 | 14.8 | 10.8 | 26.5 | 18.6 | 19.4 | 12 | 8.7 | ||
| Other | 2.2 | 2.2 | 1.2 | 1.3 | 0.3 | 3.3 | 1.4 | 0.4 | 1.3 | 0.7 | ||
| Family SES | ||||||||||||
| Low | 41.8 | 50.5 | 48.5 | 33 | 63.9 | <.001 | 44 | 51.4 | 56.5 | 38.3 | 73.1 | <.001 |
| Medium | 20.7 | 28.7 | 30 | 29.9 | 26.6 | 21.3 | 30.9 | 30.2 | 29.1 | 20.6 | ||
| High | 37.5 | 20.8 | 21.5 | 37.1 | 9.5 | 34.7 | 17.7 | 13.3 | 32.7 | 6.3 | ||
| Ever sexual intercourse | 30.7 | 32.7 | 17.6 | 30.4 | 28.3 | <.001 | 30.7 | 37.2 | 26.6 | 20.6 | 11.3 | <.001 |
| Means (SE) | ||||||||||||
| Physical/psychological symptoms (range, 1.93–4.27) |
−0.79 (0.04) | −0.45 (0.05) | −0.18 (0.06) | −0.27 (0.06) | −0.18 (0.05) | <.001 | −0.23 (0.04) | 0.33 (0.05) | 0.35 (0.06) | 0.70 (0.06) | 0.56 (0.06) | <.001 |
a
Chi-square or ANOVA test for differences between countries within gender