Table 2.

Outpatients and students matched by age, sex and levels of emotional and behavioural problems

Age-group	8 - 9.5 years	10 - 11.5 years	12 - 13.5 years	14 - 15.5 years	Total pairs
Matched on sex and age
Girls	20	32	31	34	117
Boys	49	53	35	38	176
Total	69	85	66	72	292
Matched on sex, age and level of emotional and behaviour problems1
Girls	4	11	9	8	32
Boys	18	24	17	13	72
Total	22	35	26	21	104

¹Total Problems score on the CBCL