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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