Table 3

Exploratory factor analysis of overall questionnaire (n = 46 items)
Factors Domains Items* Alpha** Var***
4 Attitude for using MI 25,26,28,29,30,31,32,33,34,35,36,37,39,41 0.92 36%
Knowledge and skills PT 5,6,7,20,21,38,40,42 0.80
Applicability of guideline 8,9,10,13,15,17,18 0.77
Time & Money/Patients 14,19,23,24,45 0.66
5 Attitude for using MI 25,26,28,29,30,31,32,33,34,35,36,37,39,41 0.92 39%
Knowledge and skills PT 3,5,6,7,20,21,38,40,42 0.76
Applicability of guideline 8,9,10,13,15,17,18,28 0.79
Time & Money 14,16,44,45,46 0.71
Patients 23,24 0.76

Using principal axis factoring with oblique (Promax) rotation. Kaiser-Meyer-Olkin measure of sampling adequacy was 0.76 and p-value for Bartlett’s Test of Sphericity was <0.001 for all analyses. For all analyses individual results for Anti-image correlations were >0.5; MI: Measurement Instruments; PT: Physical Therapist.

*Variables presented with loadings ≥ 0.4; **Cronbach’s alpha;***Explained variance by factors combined.

van der Wees et al.

van der Wees et al. BMC Health Services Research 2013 13:159   doi:10.1186/1472-6963-13-159

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