| Middle school students (N = 1594) | High school students (N = 1900) | University students (N = 1257) | Total1 (N = 4751) |
| |||||
| N | % | N | % | N | % | N | % |
| |
| Gender (N = 4751) |
| ||||||||
| Male | 781 | 49.0 | 841 | 44.3 | 371 | 29.5 | 1993 | 41.9 |
|
| Female | 813 | 51.0 | 1059 | 55.7 | 886 | 70.5 | 2758 | 58.1 |
|
| Nationality (N = 4595) |
| ||||||||
| Portuguese | 1429 | 94.1 | 1716 | 94.3 | 1235 | 98.2 | 4380 | 95.3 |
|
| Other | 89 | 5.9 | 104 | 5.7 | 22 | 1.8 | 215 | 4.7 |
|
| Sex education classes (SEC) (N = 4392) |
| ||||||||
| Having had SEC | 827 | 58.4 | 1254 | 72.1 | 745 | 60.3 | 2826 | 64.3 |
|
| Not having had SEC | 589 | 41.6 | 486 | 27.9 | 491 | 39.7 | 1566 | 35.7 |
|
| M | SD | M | SD | M | SD | M | SD | ||
| Age (N = 4751) | 13.8 | .8 | 15.9 | .8 | 19.8 | 2.9 | 16.2 | 2.8 | |