Table 1 NPR-descriptives and multiaxial classifications in children with ADHD in MoBa (n = 1595) and the general child population; All (n = 11 119)

Age (years) at first contact in CAMHS

7.07 (1.84)

7.64 (1.97)

t = -12.3, df = 1594, p < 0.0001, d = -.30^(a)

Age (years) at first ADHD diagnosis in CAMHS

7.87 (1.76)

8.38 (1.96)

t = -.11.5, df =1594, p < 0.0001, d = -.27^(a)

Number of days in CAMHS

858 (566)

949 (604)

p = 0.85^(b)

Number of contacts in CAMHS

38 (40)

44 (51)

p = 0.03, d = -.13^(b)

Multiaxial classifications

% MoBa

% All

Axis I, psychiatric disorders

29.5%

29.5%

z = 0, p = 1.0^(c)

Axis II, learning disabilities

19.3%

20.4%

z = 1.09, p = 0.28^(c)

Axis III, intellectual disabilities (F70–F79)

1.3%

1.8%

z = 1.50, p = 0.13^(c)

Axis IV, epilepsy (G40)

1.3%

1.3%

z = 0, p = 1.0^(c)

Mean (sd) MoBa

Mean (sd) All

Axis V, abnormal psychosocial situations (sum-score)

0.64 (0.89)

0.81 (1.01)

t = 7.63, p < 0.001, d = -.18^(a)

Axis VI, CGAS

55.0 (13.1)

52.4 (17.19

t = 7.93, p < 0.001, d = .17^(a)