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Table 2 Exploratory factor analysis (EFA) results and Cronbach’s alpha coefficients

From: Development and testing of the hemodialysis symptom distress scale (HSD-22) to identify the symptom cluster by using exploratory factor analysis

Symptom Factor loading Cronbach’s alpha
Factor 1 Factor 2 Factor 3 Factor 4 Factor 5
Factor 1       0.89
 Tiredness 0.87      
 Lack of vitality 0.82      
 Lack of energy 0.81      
 Muscle weakness 0.78      
 Dry mouth/thirst 0.73      
 Vertigo 0.63      
 Headache 0.62      
Factor 2       0.85
 Chest pain   0.84     
 Shortness of breath   0.83     
 Dyspnea   0.77     
 Chest tightness   0.75     
 Arrhythmia   0.65     
 Lack of appetite   0.62     
Factor 3       0.80
 Waking in night    0.82    
 Trouble falling asleep    0.78    
 Itchy skin    0.75    
Factor 4       0.77
 Joint pain     0.88   
 Sore muscles     0.80   
 Numbness     0.78   
Factor 5       0.73
 Vomiting      0.87  
 Nausea      0.80  
 Cramps      0.66  
Total scale       0.93
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BMC Nephrology

ISSN: 1471-2369

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