Table 4. Treatment effect of the Youth Readiness Intervention among the caregivers of young people, Sierra Leone, 2012–2013.

Outcome	Potential scores	Treatment effect (95% CI)a	Effect sizeb
Emotional distress	1 to 4	−0.252 (−0.478 to −0.026)	0.51
Functional impairment	1 to 4	0.073 (−0.169 to 0.315)	0.13
Prosocial behaviour	0 to 3	0.249 (0.012 to 0.486)	0.46
Internalizing	0 to 3	−0.001 (−0.199 to 0.197)	0.00
Externalizing	0 to 3	0.002 (−0.157 to 0.162)	0.00

CI: confidence interval.

^a This represents the change recorded in the mean score, between baseline and follow-up, among the caregivers of the young people given the intervention, over and above that observed among the caregivers of the young people in the control arm.

^b The effect size of the treatment effect is equivalent to the standardized mean difference.