Associations of accelerometer measured school- and non-school based physical activity and sedentary time with body mass index: IPEN Adolescent study

Table 5 Associations of MVPA and ST with BMI categories (IOTF) (thin/normal vs. overweight/obese): full models including moderating effects

Model 1: Total MVPA/ST			Model 2: School and non-school MVPA/ST
Regression term	OR (95% CIs)	p-value	Regression term	OR (95% CIs)	p-value
Total MVPA (min/day; main effect)	0.990 (0.985, 0.994)	< .001	MVPA during school (min/day; main effect)	0.990 (0.980, 1.001)	.066
			Non-school MVPA (min/day; main effect)	0.996 (0.993, 0.999)	.004
			ST during school (min/day; main effect)	0.991 (0.985, 0.997)	.003
Accelerometer-comparability-specific effects of total ST (min/day)			Accelerometer-comparability-specific effects of non-school ST (min/day)
Not comparable accelerometers	1.001 (0.997, 1.005)	.696	Not comparable accelerometers	1.002 (0.998, 1.006)	.330
Comparable accelerometers	0.997 (0.995, 0.998)	< .001	Comparable accelerometers	0.998 (0.996, 1.000)	.055

Abbreviations: ITOF International Obesity Task Force, MVPA Moderate-to-vigorous physical activity, ST Sedentary time, OR Odds ratio, CI Confidence interval. Estimates from generalized additive mixed models with random intercepts at the administrative-unit and school levels (pooled estimates from 10 imputed datasets). Models were adjusted for adolescent sex, age, city, area-level walkability and SES, valid days of accelerometer wear, average wear time per day and accelerometer comparability

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