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Table 4 Intercorrelations between sections of the St George's Respiratory Questionnaire#

From: Health status in COPD cannot be measured by the St George's Respiratory Questionnaire alone: an evaluation of the underlying concepts of this questionnaire

  St George's Respiratory Questionnaire
  Symptoms Activity Impacts Total
Symptoms 1.00 -- -- --
Activity 0.50 1.00 -- --
Impacts 0.54 0.69 1.00 --
Total 0.73 0.88 0.91 1.00
  1. #only significant correlations (p < 0.01) are shown; Pearson's r ≥ 0.70 (criterion for conceptual similarity)