Association between time-weighted activity space-based exposures to fast food outlets and fast food consumption among young adults in urban Canada

Table 3 Associations of time-weighted count of fast food outlets in participants’ activity spaces with count of fast food consumption estimated using a negative binomial regression model among young adults (n = 591) in five Canadian urban regions

	Model 1^a		Model 2		Model 3
	IRR ^b	95% CI	IRR	95% CI	IRR	95% CI
Log transformed time-weighted number of fast food stores ^c	1.078*	0.999, 1.163	1.135**	1.024, 1.259	1.138**	1.004, 1.289

*P < 0.1, **P < 0.05, ***P < 0.01
^a Models 1, 2, 3 adjust for age, sex, income adequacy, weight status, general health status, weight concern, ALE measure, and city of residence. Log transformed time-weighted number of fast food stores are computed in buffer of activity locations with radii of 500 m, 1 km, and 1.5 km in Models 1, 2, 3 respectively
^b Incident rate ratios (IRRs) represent difference in expected weekly fast food consumption frequency per one-unit increase in a predictor variable
^c The temporal weight is the proportion of time spent in each of the activity locations relative to the total time spent in all activity locations of an individual

ISSN: 1479-5868