Table 1.
Background characteristics and descriptive data on the children with ADHD, siblings and their controls, prior to matching
| Children with ADHD and their controls | Siblings and their controls | |||||||
|---|---|---|---|---|---|---|---|---|
| ADHD-family group diagnosed children (N = 476) | SYC (N = 196) | USoc (10–15 years only) (N = 4,234) | ADHD-family group diagnosed children (10–15 years only) (N = 307) | ADHD-family group siblings (N = 337) | SYC (those with appropriate aged siblings) (N = 136) | USoc (those with appropriately aged siblings) (N = 3,477) | ADHD family group siblings (10–15 years) (N = 178) | |
| Age (mean) | 11.8 (SD 2.9) Range 6–18 |
11.8 (SD 2.9) Range 6–18 |
12.5 (SD 1.7) Range 10–15 |
12.4 (SD 1.6) Range 10–15 |
11.8 (SD 3.6) Range 5–18 |
11.9 (SD 3.3) Range 6–18 |
12.8 (SD 1.7) Range 10–15 |
12.4 (SD 1.7) Range 10–15 |
| Male (%) | 83.2 | 53.6 | 49.7 | 87.6 | 50 | 49.6 | 49.8 | 45.2 |
| Inattentive ADHD rating score (mean) | 21.2 (SD 5.4) | 4.4 (SD 4.8) | Not available | 21.1 (SD 5.5) | 7.8 (SD 7.8) | 4.1 (SD 4.7) | Not available | 7.5 (SD 7.7) |
| Hyperactive ADHD rating score (mean) | 20.0 (SD 6.3) | 2.9 (SD 4.4) | Not available | 19.7 (SD 6.4) | 7.0 (SD 7.7) | 2.7 (SD 4.4) | Not available | 5.8 (SD 7.1) |
| Primary carer has further or higher education (%) | 28.2 | 74.0 | 33.0 | 27.7 | 29.1 | 80.1 | 33.0 | 32.6 |
| Employment deprivationa (%) | 10.7 | 8.2 | 10.6 | 10.1 | 10.5 | 8.2 | 10.0 | 10.5 |
| Income deprivationb (%) | 17.1 | 11.4 | 17.5 | 16.8 | 17.1 | 11.4 | 17.7 | 16.7 |
| Primary carer cohabiting with partner (%) | 67.4 | 87.8 | 72.9 | 65.4 | 72.4 | 91.2 | 76.1 | 72.5 |
| Primary carer not employed (%) | 58.2 | 11.7 | 35.7 | 59.9 | 55.3 | 11.8 | 38.0 | 59.1 |
| Primary carer positive ADHD screen | 36.4 % (n = 459) | 6.4 % (n = 187) | Not available | 35.7 % (n = 297) | 37.3 % (n = 327) | 6.1 % (n = 132) | Not available | 38.4 % (n = 172) |
| Secondary carer positive ADHD screen | 36.7 % (n = 210) | 9.0 % (n = 134) | Not available | 31.2 % (n = 128) | 32.9 % (n = 167) | 7.2 % (n = 97) | Not available | 31.8 % (n = 88) |
aProportion of working age population in LSOA or data zone (for Scotland) that are employment deprived
bProportion of population in LSOA or data zone that are income deprived