Table 2.

Backward regression analyses and multilevel analyses of the association between the indoor childcare physical activity facilities and children's physical activity levels (number of observations = 710).

	Regression analysisa		Multilevel analysisa,b
	Regression coefficient (B)	P value	Regression coefficient (B)	P value
Portable riding toys	−.32	<.001	−.31	<.001
0 = not present, 1 = present
Size playground	.10	<.001	.10	<.001
0 (very small)–10 (very large)

^aVariables excluded from the analyses because they were present in either all or none of the childcare centers: portable equipment: ball equipment and floor play equipment; fixed equipment: structured track, merry-go-round, tunnels, sandbox, and swinging equipment. Variables excluded from the final model because they were nonsignificant: portable equipment: climbing structures, jumping equipment, push/pull toys, slides, sand/water toys, and twirling equipment; fixed equipment: climbing structures, see-saw, slides, and balancing surfaces; background variables: sex, age.

^bFinal model comprises a first-order autoregressive (AR1) correlation for repeated measures within children. Other random effects were not included in the final model.