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Table 3 Results of the explanatory factor structure by principal component analysis with loadings (n = 549)

From: Validity and reliability of the Norwegian version of the Musculoskeletal Health Questionnaire in people on sick leave

Item   Factor 1 Factor 2 Factor 3
1 Pain/stiffness during the day 0.45   
2 Pain/stiffness during the night    − 0.86
3 Walking 0.85   
4 Washing/dressing    − 0.39
5 Physical activity levels 0.84   
6 Work/daily routine 0.65   
7 Social activities and hobbies 0.59   
8 Needing help 0.41   
9 Sleep    − 0.89
10 Fatigue or low energy    − 0.58
11 Emotional well-being   0.42  
12 Understanding of your condition and any current treatment   0.88  
13 Confidence in being able to manage symptoms   0.84  
14 Overall impact 0.48   
  1. Extraction Method: principal component analysis; oblique rotation with Kaiser normalization. Values below 0.3 are suppressed. The model explained 60% of the total variance; factor 1 explained 38%, factor 2 = 12% and factor 3 = 10%