Applying the theory of planned behaviour to multiple sclerosis patients’ decisions on disease modifying therapy – questionnaire concept and validation

Table 1 Effects of educational intervention on PBMS parameters (validation trial)

PBMS		Comparison of PBMS parameters between study groups
Domains		control	intervention	range	p
	Sub-domains
1 Attitude		3.5 (1.9)	3.0 (1.8)	0-9	.04*
	a: expectations regarding outcomes	1.8 (0.6)	1.6 (0.6)	0-3	.001*
	b: values of expected outcomes	1.8 (0.6)	1.8 (0.6)	0-3	.55
2 Social norm		2.1 (1.2)	1.7 (1.0)	0-9	.006*
	a: assumed attitudes of important others	1.9 (0.6)	1.8 (0.7)	0-3	.28
	b: motivation to comply with these norms	1.1 (0.4)	1.0 (0.4)	0-3	.004*
3 Control beliefs		3.2 (2.1)	2.9 (2.1)	0-9	.313
	a: assumed facilitators or barriers	1.6 (0.7)	1.4 (0.8)	0-3	.14
	b: perceived power of these factors	1.8 (0.6)	1.7 (0.7)	0-3	.42
Intention estimate		8.9 (4.1)	7.5 (4.4)	0-27	.04*

P-values refer to unpaired t-tests comparing post intervention mean scores of intervention- and control groups. Theoretical range of scores is 0 to 3 for sub-domains, 0 to 9 for domains and 0 to 27 for intention estimate. “*” indicates statistically significant unpaired t-tests.

ISSN: 1472-6947