Explaining clinical behaviors using multiple theoretical models

Table 4 Percentage of variance (R2) in intention, behavioral simulation, and behavior explained by theories

	Dependent variable	Percentage of variance in DV explained by theory and constructs predicting behavior
	Dependent variable	TPB			SCT			II			LT			CSSRM	K
Taking Dental Radiographs (DRa)	Intention	28***			39***			28***			43***			3	4**
	Behavioral simulation	16***			9***			10***			9***			3	0
	Behavior	13***			7**			11***			8***			0	0
	Behavior	I, PBC(i), PBC(d)			SE, RP			AP			AC			0	0
Performing Dental Restorations (DRe)	Intention	27.9***			21.4***			24.5***			24.5***			18.8	0
	Behavioral simulation	5.3**			13.1***			3.7			5.9*			0	0
	Behavior	1.1			0			0			0			0	5** K
Placing Fissure Sealants (FS)	Intention	30***			25***						58***			1	0
	Behavioral simulation	25***			28***			7**			30***			2	0
	Intention	30.2***			28.9***						42.6***			27.2***	2.3**
Managing URTI (URTI)	Behavioral simulation	26.7***			25.9***			6.2**			24***			16	4.5***
	Behavior	3.3*			4.9**			2.4			6.3*** H			2.8	0
	Behavior	I, PBC(i), PBC(d)			RP, OE			2.4			6.3*** H			2.8	0
	Intention	25***			21.5***						26.3***			11.3***	2.3**
Managing Back Pain (LBP)	Behavioral simulation	11.6***			12.1***			1.5*			8.1***			3.6	0.5
	Behavior	0.4**			0.2			0			0.4			0	0
		Min	Med	Max	Min	Med	Max	Min	Med	Max	Min	Med	Max
	Intention$	25	28	30.2	21.4	25	39				24.5	42.6	58
	Intention$	LBP	DRa	URTI	DRe	FS	DRa				DRe	URTI	FS
	Behavioral simulation	5.3	16	26.7	9	13.1	28	1.5	6.2	10	5.9	9	30
	Behavioral simulation	DRE	DRa	URTI	DRa	DRe	FS	LBP	URTI	DRa	DRe	DRa	FS
	Behavior$$	1.1	3.3	13	0	4.9	7	0	2.4	11	0	6.3	8
	Behavior$$	DRe	URTI	DRa	DRe	URTI	DRa	DRe	URTI	DRa	DRe	URTI	DRa

*p < 0.05, **p < 0.01, ***p < 0.001.
TPB Theory of Planned Behavior, SCT Social Cognitive Theory, II Implementation Intentions, LT Learning Theory, CSSRM Common Sense Self Regulation Model, K Knowledge.
Constructs (with a statistically significant beta weight): I Intention, PBC Perceived Behavioral Control (I indirect or d direct), SE self efficacy, RP risk perception, OE outcome expectancies, AP action planning, H habit, K knowledge.
$ Prediction of intention by Implementation Intention not reported as II is a post-intentional construct.
$$ Back Pain not included as variance measured with McFadden’s R squared; Fissure Sealants not included due to problems measuring behavior.

ISSN: 1748-5908