Table 4

IRRs for association between hyperactivity and conduct problems at age 5 and subsequent hospital admissions or A&E attendances for injury between ages 9 and 14 years: sex-stratified models

	Boys				Girls
	Adjusted (model 3)*		Adjusted (model 4)†		Adjusted (model 3)*		Adjusted (model 4)†
	IRR (95% CI)	P value	IRR (95% CI)	P value	IRR (95% CI)	P value	IRR (95% CI)	P value
Hyperactivity
Normal	1		1		1		1
Borderline	1.05 (0.72 to 1.53)	0.810	1.00 (0.70 to 1.44)	0.982	1.42 (0.91 to 2.21)	0.119	1.33 (0.86 to 2.06)	0.194
High	0.98 (0.77 to 1.25)	0.888	0.93 (0.72 to 1.20)	0.571	0.99 (0.70 to 1.39)	0.937	0.91 (0.62 to 1.33)	0.618
Conduct problems
Normal	1		1		1		1
Borderline	1.27 (0.97 to 1.66)	0.088	1.28 (0.98 to 1.67)	0.068	1.38 (1.06 to 1.81)	0.017	1.37 (1.04 to 1.80)	0.023
High	1.07 (0.83 to 1.38)	0.602	1.10 (0.85 to 1.42)	0.465	1.24 (0.81 to 1.91)	0.318	1.20 (0.78 to 1.85)	0.396

*Model 3:Adjusted for number of people in the household, lone parent, residential area, household poverty, maternal education, physical activity level, maternal age at child’s birth and country of the respondents.
†Model 4: Adjusted for number of people in the household, lone parent, residential area, household poverty, maternal education, physical activity level, maternal age at child’s birth and country of the respondents and also adjusted for conduct problems (in case of hyperactivity) and hyperactivity (in case of conduct problems).
A&E, Accident & Emergency; IRR, incidence rate ratio.