A natural experiment of state-level physical activity and screen-time policy changes early childhood education (ECE) centers and child physical activity

Table 2 Child PA recorded at the ECE center at Baseline and Follow-up^a

	Baseline		Follow-up		Difference	p-value (n = 49)
	Mean ± SD		Mean ± SD		Mean ± SD
	All (n = 112)	Subset (n = 49)	All (n = 83)^b	Subset (n = 49)	(n = 49)
SB minutes/hour	30.1 ± 6.0	29.9 ± 6.3	32.9 ± 7.0	33.5 ± 7.9	3.6 ± 8.7	0.006*
TPA minutes/hour	29.9 ± 6.0	30.1 ± 6.3	27.0 ± 7.0	26.5 ± 7.9	−3.6 ± 8.7	0.006*
MVPA minutes/hour	9.1 ± 3.8	9.0 ± 3.7	8.4 ± 3.7	8.1 ± 4.1	− 0.9 ± 4.4	0.17

PA Physical Activity, SB Sedentary Behavior, TPA Total Physical Activity, MVPA Moderate-to-Vigorous Physical Activity; Subset values are the data from children who completed measures both at baseline and follow-up (n = 49). ^ap-value displayed is a result of a paired t-test of physical activity outcomes. ^b83 participants includes all children with complete data at follow-up, which includes children from baseline and newly enrolled children at follow-up; *p < 0.05

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