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Table 3 Construct validity: correlationsa between selected PRO items among 278 outpatients with chronic kidney disease

From: Patient-reported outcome measures for clinical decision-making in outpatient follow-up: validity and reliability of a renal disease questionnaire

 

Daily activities

Renal function

Feeling aversion to food

Quality of life

Interpretation of correlation (r)

Shape of relationship

Nocturnal awakening

r = 0.31

p < 0.0001

   

Hypothesis rejected

Negative linear

Self-rated health

 

r = 0.19b

p = 0.004

  

Hypothesis accepted

Negative linear

Lack of appetite

  

r = 0.77

p < 0.0001

 

Hypothesis accepted

Negative linear

Daily activities

   

r = 0.58

p < 0.0001

Hypothesis accepted

Negative linear

  1. aSpearman correlation coefficients (r) were calculated
  2. bn = 233