Table 4.

Univariate regression of the theory coding scheme (TCS) items, TCS categories, and included items.

Theory coding scheme categories (category number)	Items included	Univariate
		Β	95% CI	P value
Reference to underpinning theory (C1)	1, 2, 3	0.2683	(–0.1883, 0.7249)	.25
Targeting of relevant theoretical constructs (C2)	2, 5, 6, 7, 8, 9, 10, 11	0.2558	(0.0619, 0.4497)	.01a
Using theory to select recipients or tailor interventions (C3)	4, 6	0.2245	(–0.3137, 0.7626)	.41
Measurement of constructs (C4)	12a, 12b	0.1363	(–0.2128, 0.4854)	.44
Testing of theory: mediation effects (C5)	12a, 12b, 13, 14a, 14b, 14c, 14d, 15, 16	0.0524	(–0.0482, 0.1531)	.31
Refining theory (C6)	17a, 17b
Total use of theory	All items	0.0524	(–0.0068, 0.1116)	.08

^aP<.05.