Table 1.
Characteristics of stimulant-treated children diagnosed with ADHD-only, ADHD with PDD, ADHD with ODD/CD and ADHD with other psychiatric co-morbidity
| ADHD-only | ADHD + co-morbidity | χ 2 test | |||
|---|---|---|---|---|---|
| n = 350 | ADHD + PDD (n = 53) | ADHD + ODD/CD (n = 50) | ADHD + other co-morbidity (n = 57) | ||
| n | n | n | n | P | |
| Age (mean years) | 350 (10.5) | 53 (10.6) | 50 (10.3) | 57 (10.4) | 0.94 |
| Male (%) | 300 (86) | 44 (83) | 44 (88) | 46 (81) | 0.69 |
| Specialized school (%) | 98 (28b) | 32 (60a) | 20 (40ab) | 25 (44ab) | <0.001 |
| Time since first prescription | |||||
| <1 year (%) | 78 (22) | 8 (15) | 8 (16) | 15 (26) | 0.42 |
| 1–2 years (%) | 64 (18) | 10 (19) | 14 (28) | 12 (21) | |
| >2 years (%) | 203 (58) | 33 (62) | 26 (52) | 30 (53) | |
| Unknown (%) | 5 (1) | 2 (4) | 2 (4) | 0 (0) | |
| Current prescriber stimulants | |||||
| GP (%) | 190 (54a) | 18 (34b) | 13 (26b) | 15 (26b) | <0.001 |
| Paediatrician (%) | 79 (23) | 13 (25) | 8 (16) | 18 (32) | |
| Child psychiatrist (%) | 69 (20) | 22 (42) | 28 (56) | 20 (35) | |
| Other (%) | 9 (3) | 0 (0) | 1 (2) | 4 (7) | |
| Unknown (%) | 3 (1) | 0 (0) | 0 (0) | 0 (0) | |
Proportions that share the same superscript are not significantly different from each other