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

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

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*
  1. 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.