Measuring determinants of implementation behavior: psychometric properties of a questionnaire based on the theoretical domains framework

Table 4 Comparison between initial and final questionnaire

Domains		Item numbers	Amount of items	Cronbach’s alpha	Explained variance OMG method	Explained variance PCA
Domains		(from initial questionnaire)	Amount of items	Cronbach’s alpha	Explained variance OMG method	Explained variance PCA
D1	Knowledge	1 - 4	4	.93	48.0%	56.5%
D2	Skills	5 - 7	3	.86
D3	Social/ professional role and identity	8 - 10	3	.90
D4	Beliefs about capabilities	11 - 24	14	.84
D5	Beliefs about consequences	25 - 36	12	.83
D6	Motivation and goals	37 - 42	6	.77
D7	Memory, attention, and decision p.	43 - 44	2	.71
D8	Environmental context and res.	45 - 68	24	.82
D9	Social influences	69 - 78	10	.84
D10	Emotion	79 - 90	12	.88
D11	Behavioral regulation	91 - 96	6	.79
D12	Nature of the behaviors	97 - 100	4	.85
D1	Knowledge	1 - 4	4	.93	63.3%	68.0%
D2	Skills	5 - 7	3	.86
D3	Social/ professional role and identity	8 - 10	3	.90
D4	Beliefs about capabilities	11 - 21	11	.84
D5	Optimism	22 - 24	3	.79
D6	Beliefs about consequences	25 - 36	12	.83
D7	Intentions	37 - 39	3	.91
D8	Goals	40, 41	2	.88
D9	Innovation	45 - 49	5	.68
D10	Socio-political context	51 - 53	3	.73
D11	Organization	57, 76 - 78	4	.85
D12	Patient	60, 61	2	.74
D13	Innovation strategy	62 - 68	7	.82
D14	Social influences	69 - 75	7	.86
D15	Positive emotions	80, 82, 84, 87, 89, 90	6	.85
D16	Negative emotions	79, 81, 83, 85, 86, 88	6	.85
D17	Behavioral regulation	91 - 96	6	.79
D18	Nature of the behaviors	43, 44, 97 - 100	6	.85

Note. OMG method, oblique multiple group method; PCA, principal component analysis.

ISSN: 1748-5908