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Table 3 Factor loadings of the eight sub-scales of the KDQOL-SF

From: Validation of the Kidney Disease Quality of Life-Short Form: a cross-sectional study of a dialysis-targeted health measure in Singapore

KDQOL-SF General Health Items

Role Physical

Physical Functioning

Emotional Well-being

General Health

Social Function

Pain

Role Emotional

Energy Fatigue

Vigorous activities

 

.663

      

Moderate activities

 

.756

      

Lifting carrying groceries

 

.682

      

Climbing several flights of stairs

 

.807

      

Climbing one flight of stairs

 

.686

      

Bending, kneeling, stooping

 

.534

      

Walking more than a mile

 

.731

      

Walking several blocks

 

.699

      

Walking one block

 

.537

      

Bathing or dressing yourself

 

.280

      

Due to physical health, did you...

        

Cut down amount of time on activities

.852

       

Accomplish less than what you would have liked

.872

       

Were limited in the kind of activities

.861

       

Have difficulty performing activities

.823

       

Body pain during last 4 weeks

     

.858

  

Did pain interfere your work

     

.794

  

How would you rate your health

   

.472

    

I get sick easier than other people

   

.669

    

I am as healthy as any one else

   

.769

    

I expect my health to get worse

   

.592

    

My health is excellent

   

.741

    

Have you been nervous person

  

.620

     

You felt so down that nothing could cheer you up

  

.737

     

Have you felt calm & peaceful

  

.218

     

Have you felt down hearted and blue

  

.748

     

Have you been a happy person

  

.215

     

Due to emotional problems...

        

You had to cut down amount of time on activities

      

.803

 

You accomplished less

      

.812

 

You could not do activities as carefully as usual

      

.749

 

To what extent have your physical health & emotional problems...

        

Interfered with your normal social life

    

.381

   

Interfered with visiting friends, relatives

    

.451

   

Did you feel full of pep

       

.774

Did you have a lot of energy

       

.694

Did you feel worn out

       

.339

Did you feel tired

       

.416

  1. KDQOL-SF, kidney disease quality of life-short form
  2. Verimax rotation with Kaiser normalization was used to control for certain influences (of items on the sub-scale) on the overall result