Effectiveness of the ‘Girls Active’ school-based physical activity programme: A cluster randomised controlled trial

Table 4 Changes in minutes per day of MVPA at 7 and 14 (primary outcome) month follow-up between participants randomised to usual practice (control) or to the Girls Active programme (intervention)^a

	Number of schools \| pupils		Mean change from baseline (95% C.I.)		Adjusted difference at follow-up^b
	Control	Intervention	Control	Intervention	Coefficient (95% C.I.)	P-value	ICC
Complete case^c
7 months	8 \| 572	10 \| 730	-6.18 (-7.30 to -5.06)	-2.45 (-3.50 to -1.41)	2.42 (0.13 to 4.72)	0.039	0.03
14 months	9 \| 539	10 \| 672	-3.47 (-4.91 to -2.03)	-2.09 (-3.27 to -0.90)	1.75 (-0.80 to 4.29)	0.178	0.02
Per protocol^d
7 months	8 \| 572	8 \| 586	-6.18 (-7.30 to -5.06)	-1.91 (-3.11 to -0.72)	3.14 (0.93 to 5.35)	0.005	0.02
14 months	9 \| 539	8 \| 549	-3.47 (-4.91 to -2.03)	-1.46 (-2.74 to -0.18)	1.67 (-1.15 to 4.48)	0.246	0.02
Intention-to-treat^e
7 months	10 \| 885	10 \| 867	-5.92 (-7.05 to -4.78)	-2.50 (-3.57 to -1.44)	2.30 (0.25 to 4.35)	0.028	-
14 months	10 \| 885	10 \| 867	-3.63 (-5.03 to -2.23)	-2.01 (-3.20 to -0.81)	1.65 (-0.64 to 3.94)	0.158	-

CI confidence interval; ICC intra-class correlation; MVPA moderate- to vigorous-intensity physical activity
^aIncluding pupils who have worn the accelerometer with a minimum of two valid days with at least one school day at baseline and 7 months, and at baseline and 14 months
^bDifference in the mean MVPA at follow-up adjusted for cluster effect, baseline MVPA value, participant year group, school percentage free school meal eligibility and stratification categories (school size and percentage of non-White pupils)
^cThose with missing outcome data or missing variables required for the model adjustment are excluded
^dSchools that did not engage with 70% of the programme have been excluded from this analysis
^eMissing data imputed using multiple imputation

ISSN: 1479-5868