Characteristics of the participants (n=22 670)
| Childhood obesity cohort (n=3942) | Comparison group (n=18 728) | |||
| n | % | n | % | |
| Female sex | 1825 | 46.3 | 8701 | 46.5 |
| Nordic | 2905 | 73.7 | 14 048 | 75.0 |
| Age at end of follow-up (years) | 23.4* | 21.4–26.3* | 23.4* | 21.5–26.3* |
| ADHD/ADD | 617 | 15.7 | 1044 | 5.6 |
| Anxiety/depression | 831 | 21.1 | 2158 | 11.5 |
| Parental SES | ||||
| Low | 867 | 22.0 | 2700 | 14.4 |
| Medium-low | 1540 | 39.1 | 6023 | 32.1 |
| Medium-high | 1159 | 29.4 | 6587 | 35.2 |
| High | 355 | 9.0 | 3218 | 17.2 |
| Missing | 21 | 0.5 | 200 | 1.1 |
| Maternal education | ||||
| Compulsory school | 1582 | 40.1 | 5615 | 30.0 |
| Upper secondary school | 1541 | 39.1 | 7167 | 38.3 |
| University degree | 730 | 18.5 | 5383 | 28.7 |
| Missing | 89 | 2.3 | 563 | 3.0 |
| Paternal education | ||||
| Compulsory school | 1273 | 32.3 | 4402 | 23.5 |
| Upper secondary school | 1890 | 48.0 | 9095 | 48.6 |
| University degree | 482 | 12.2 | 3912 | 20.9 |
| Missing | 297 | 7.5 | 1319 | 7.0 |
| Maternal income | ||||
| Q1 | 1173 | 29.8 | 4887 | 26.1 |
| Q2 | 1281 | 32.5 | 5843 | 31.2 |
| Q3 | 931 | 23.6 | 4585 | 24.5 |
| Q4 | 486 | 12.3 | 2988 | 15.9 |
| Missing | 71 | 1.8 | 425 | 2.3 |
| Paternal income | ||||
| Q1 | 1127 | 28.6 | 3917 | 20.9 |
| Q2 | 760 | 19.3 | 3128 | 16.7 |
| Q3 | 889 | 22.5 | 4389 | 23.4 |
| Q4 | 864 | 21.9 | 5986 | 32.0 |
| Missing | 302 | 7.7 | 1308 | 7.0 |
| Maternal occupational status | ||||
| Occupation | 2963 | 75.2 | 15 405 | 82.2 |
| No occupation | 916 | 23.2 | 2956 | 15.8 |
| Missing | 63 | 1.6 | 367 | 2.0 |
| Paternal occupational status | ||||
| Occupation | 2868 | 72.8 | 14 906 | 79.6 |
| No occupation | 800 | 20.3 | 2627 | 14.0 |
| Missing | 274 | 6.9 | 1195 | 6.4 |
Data are n % if not else stated.
*Median with IQRs.
ADHD/ADD, attention deficit disorder with or without hyperactivity; Q, quartile; SES, socioeconomic status.