Table 1.

Linear Regression Models Used to Test Associations of Sedentary Tasks With Cardiometabolic Risk Factors^a, the Coronary Artery Risk Development in Young Adults Study, 2010–2011

Model	Sedentary Tasks Includedb, hours/day
	Watching Television	Computer Work	Completing Paperwork	Reading	Talking on the Telephone	Sitting in a Car	Total
Single-variable modelsc
1	X
2		X
3			X
4				X
5					X
6						X
Partition modelsd
7	X	X	X	X	X	X
Isotemporal substitution modelse
8	Omit	X	X	X	X	X	X
9	X	Omit	X	X	X	X	X
10	X	X	Omit	X	X	X	X
11	X	X	X	Omit	X	X	X
12	X	X	X	X	Omit	X	X
13	X	X	X	X	X	Omit	X

^a There were 3 types of regression models used to test associations between sedentary tasks and cardiometabolic health markers.

^b Blank cells indicate that the variable was not included in the model. "Omit" indicates that the variable was removed from the model.

^c Single-variable models tested the total association of each sedentary task, unadjusted for other sedentary tasks.

^d Partition models tested the unique associations of each sedentary task, adjusted for all other sedentary tasks.

^e Isotemporal substitution models tested the substitution association of each sedentary task, holding time constant.