Characteristics | Never (n = 37,578) | Late-onset (n = 3862) | Chronic (n = 5380) | Early-onset (n = 1738) | Pa |
---|---|---|---|---|---|
Age, Mean±SD (years) | 6.3 ± 0.51 | 6.3 ± 0.53 | 6.3 ± 0.51 | 6.3 ± 0.50 | 0.55 |
Sex, % | Â | Â | Â | Â | <Â 0.001 |
  Female | 53.2 | 32.2 | 38.8 | 55.9 |  |
  Male | 46.8 | 67.8 | 61.2 | 44.1 |  |
Parental educational level, % | Â | Â | Â | 0.003 | |
  Tertiary | 9.2 | 8.4 | 8.3 | 10.8 |  |
  Secondary | 73.4 | 74.1 | 74.4 | 73.4 |  |
  Primary/below | 17.4 | 17.5 | 17.3 | 15.8 |  |
Parental occupation, % | Â | Â | Â | 0.07 | |
  Managerial/professional | 20.9 | 21.0 | 21.0 | 21.9 |  |
  Clerical/service industry | 31.3 | 31.7 | 32.0 | 31.1 |  |
  Manual job | 45.3 | 44.3 | 45.0 | 44.9 |  |
  Unemployed | 2.5 | 3.0 | 2.0 | 2.1 |  |
Cohort, % | Â | Â | Â | Â | <Â 0.001 |
  1995/96 | 50.5 | 51.0 | 48.9 | 46.0 |  |
  1996/97 | 49.5 | 49.0 | 51.1 | 54.0 |  |
Low self-esteem rate in P6, % | Â | Â | Â | Â | |
  Total | 3.1 | 4.7 | 4.3 | 2.8 | < 0.001 |
  General | 8.7 | 12.3 | 12.3 | 7.9 | < 0.001 |
  Social | 9.3 | 11.3 | 12.0 | 7.7 | < 0.001 |
  Academic/school-related | 9.7 | 12.1 | 12.3 | 9.1 | < 0.001 |
  Parent/home-related | 6.2 | 7.6 | 7.1 | 6.2 | < 0.001 |