Table 3.

Comparison of teacher-reported secondary outcomes

Outcome	Intervention arm (I)	Control arm (C)	Adjusted mean difference/odds ratioa
	Mean (s.d.)/%	Mean (s.d.)/%	Estimate	95% CI	p value	ICC
SDQ Total difficulties score in struggling rangeb
9–30-months	16.7%	19.2%	0.70	0.48–0.99	0.05	0.062
SDQ Behaviour score
9-months	0.7 (1.5)	0.9 (1.6)	−0.1	−0.3 to 0.1	0.27	0.092
18-months	1.0 (1.8)	0.9 (1.7)	−0.03	−0.3 to 0.3	0.86	0.117
30-months	0.9 (1.5)	1.0 (1.8)	−0.2	−0.5 to 0.1	0.18	0.104
SDQ Emotions score
9-months	1.3 (1.9)	1.5 (2.2)	−0.3	−0.6 to 0.1	0.14	0.202
18-months	1.7 (2.2)	1.6 (2.1)	0.1	−0.3 to 0.6	0.63	0.179
30-months	1.6 (2.1)	1.6 (2.1)	−0.005	−0.4 to 0.3	0.98	0.090
SDQ Overactivity score
9–30-months	2.7 (2.9)	2.8 (3.0)	−0.4	−0.7 to −0.1	0.02	0.079
SDQ Peer relationships score
9-months	0.8 (1.4)	1.0 (1.7)	−0.2	−0.4 to −0.03	0.02	0.119
18-months	1.1 (1.7)	1.0 (1.6)	0.1	−0.2 to 0.4	0.62	0.131
30-months	1.1 (1.6)	1.1 (1.7)	−0.07	−0.4 to 0.2	0.60	0.098
SDQ Pro-social score
9-months	8.2 (2.3)	8.0 (2.3)	0.4	0.1– 0.8	0.02	0.251
18-months	7.8 (2.4)	8.0 (2.3)	−0.1	−0.6 to 0.4	0.67	0.204
30-months	8.1 (2.2)	7.6 (2.3)	0.5	−0.03 to 1.0	0.06	0.164
SDQ Impact score >0
9–30-months	34.5%	37.3%	0.80	0.61–1.05	0.11	0.048
Pupil behaviour questionnaire
9–30-months	1.8 (2.4)	1.9 (2.6)	−0.3	−0.5 to −0.01	0.04	0.042

^aMean difference reported for quantitative outcomes and odds ratios reported for binary outcomes.

^bStruggling scoring 12 or more out of 40.

The sample size for 9-month assessments is 981 in the intervention arm and 1020 in the control arm.

The sample size for 18-month assessment is 894 in the intervention arm and 954 in the control arm.

The sample size for 30-month assessment is 856 in the intervention arm and 900 in the control arm.

ICC – Intra-cluster (intra-school) correlation coefficient from crude (unadjusted) analysis.