A within-subject examination of grandparents’ physical activity and sedentary behavior levels in the presence or absence of grandchild care provision

Table 4 Differences in PA and SB levels during a care day vs. a non-care day

	Estimates (95% CI)	p-value
Light intensity physical activity (LIPA)^a
Non-care day (Ref. = Care day)
T0	0.75 (0.67; 0.84)	< 0.001*
T1	0.81 (0.73; 0.90)	< 0.001*
T2	0.93 (0.82; 1.05)	0.240
Moderate-to-vigorous intensity physical activity (MVPA)^b
Non-care day (Ref. = Care day)	1.08 (0.86; 1.35)	0.500
Sedentary behavior (SB)^a
Non-care day (Ref. = Care day)
T0	1.31 (1.17; 1.48)	< 0.001*
T1	1.21 (1.09; 1.35)	< 0.001*
T2	1.04 (0.92; 1.17)	0.538

^a Generalized linear mixed models with Beta variance and logarithmic link functions; ^b Generalized linear mixed models with Gamma variance and logarithmic link functions; Ref.: reference category; Values represent exponentiated regression coefficients and confidence intervals; *: significantly different (p ≤ 0.05) from the care day

ISSN: 1861-6909