Table 1 Participant demographic characteristics
Variable | n (%) | ||
|---|---|---|---|
| Â | Male | Female | All |
Year level (n = 61,759) | |||
  Year 4 | 5584 (17.7) | 5466 (18.0) | 11,050 (17.9) |
  Year 5 | 5765 (18.3) | 5675 (18.7) | 11,440 (18.5) |
  Year 6 | 5691 (18.1) | 5542 (18.3) | 11,233 (18.2) |
  Year 7 | 5318 (16.9) | 5089 (16.8) | 10,407 (16.9) |
  Year 8 | 4620 (14.7) | 4478 (14.8) | 9098 (14.7) |
  Year 9 | 4494 (14.3) | 4037 (13.3) | 8531 (13.8) |
  Total | 31,472 (51.0) | 30,287 (49.0) | 61,759 (100) |
SES (n = 56,958) | |||
  Low | 6530 (22.5) | 6483 (23.2) | 13,013 (22.8) |
  Medium | 13,409 (46.3) | 12,880 (46.0) | 26,289 (46.2) |
  High | 9031 (31.2) | 8625 (30.8) | 17,656 (31) |