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Table 3 Factor analyses and reliability

From: Patient activation in Europe: an international comparison of psychometric properties and patients’ scores on the short form Patient Activation Measure (PAM-13)

Test Danish Dutch German Norwegian
Factor 1 Factor 2a Factor 1 Factor 1 Factor 1
Percentage of explained variance 69.5 % 24.4 % 85.4 % 90.8 % 96.7 %
Factor loadings 0.41–0.65 |0.01|–|0.63| 0.47–0.72 0.32–0.63 0.44–0.64
Cronbach’s alpha 0.86   0.88 0.80 0.84
Item-rest correlations 0.44–0.60   0.46–0.66 0.32–0.57 0.37–0.60
  1. aThe first three items had a higher loading for factor 2 than factor 1, but the loading for factor 1 was still >0.40. We therefore only performed the reliability analyses for factor 1 containing all 13 items
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