Table 3

Intervention effects on mediators at the interim and final follow-ups

MeasureInterim follow-upFinal follow-up
ArmUnadjusted effectAdjusted effectArmUnadjusted effectAdjusted effect
Control
Mean (SE)		Intervention
Mean (SE)		Difference (95% CI)P valueDifference (95% CI)P valueControl Mean (SE)Intervention Mean (SE)Difference (95% CI)P valueDifference (95% CI)P value
Student view of school climate
Overall2.92 (0.03)2.90 (0.03)−0.00
(−0.02 to 0.02)		0.915−0.00
(−0.02 to 0.02)		0.9932.82 (0.03)2.85 (0.03)0.05
(0.03 to 0.07)		<0.0010.05
(0.03 to 0.08)		<0.001
Student perception of supportive teacher relationships subscale2.76 (0.04)2.70 (0.04)−0.03
(−0.06 to 0.00)		−0.02
(−0.05 to 0.01)		2.64 (0.03)2.66 (0.03)0.05
(0.02 to 0.08)		0.06
(0.03 to 0.09)
Student sense of belonging2.84 (0.03)2.88 (0.03)0.04
(0.01 to 0.07)		0.04
(0.01 to 0.07)		2.78 (0.02)2.84 (0.02)0.06
(0.03 to 0.09)		0.06
(0.03 to 0.09)
Student perception of participative school environment subscale2.96 (0.03)2.91 (0.03)−0.02
(−0.05 to 0.01)		−0.03
(−0.06 to 0.01)		2.81 (0.04)2.82 (0.04)0.05
(0.02 to 0.08)		0.05
(0.01 to 0.08)
Student commitment to academic values subscale3.51 (0.01)3.53 (0.01)0.00
(−0.02–0.03)		0.00
(−0.02 to 0.03)		3.42 (0.01)3.46 (0.01)0.03
(0.01 to 0.06)		0.03
(0.01 to 0.06)
Staff view of school organisational climate
Overall* −0.13 (0.14)−0.05 (0.29)0.08
(−0.46 to 0.63)		0.7660.19
(−0.35 to 0.73)		0.499
Authority distributed among staff subscale2.04 (0.11)2.49 (0.20)0.45
(0.05 to 0.85)		0.39
(−0.10 to 0.88)
Staff relationships with students subscale3.04 (0.14)2.94 (0.23)−0.10
(−0.58 to 0.38)		−0.22
(−0.80 to 0.35)
Integration of students’ academic education and broader social development subscale2.07 (0.10)1.65 (0.09)−0.43
(−0.70 to −0.15)		−0.27
(−0.55 to 0.01)
School–community relationships subscale1.98 (0.13)2.07 (0.20)0.08
(−0.35 to 0.52)		−0.10
(−0.59 to 0.40)