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Table 2 Correlations between the initial score of the four domains of CRQ and selected parameters

From: The reliability of an arabic version of the self-administered standardized chronic respiratory disease questionnaire (CRQ-SAS)

  Dyspnea* Fatigue* Emotion* Mastery*
Age 0.02 (0.88) 0.07 (0.65) 0.05 (0.75) 0.11 (0.49)
Disease duration -0.23 (0.13) -0.35 (0.02) -0.25 (0.10) -0.09 (0.58)
Number of exacerbations over twelve months -0.36 (0.02) -0.02 (0.88) -0.002 (0.99) -0.07 (0.66)
Number of admissions over twelve months -0.18 (0.23) -0.06 (0.68) -0.03 (0.85) -0.20 (0.18)
Smoking history (Pack-year) -0.04 (0.77) -0.17 (0.26) -0.13 (0.39) -0.20 (0.19)
The percentage of Forced Expiratory volume in one second (FEV1) 0.08 (0.59) 0.18 (0.25) -0.07 (0.64) 0.02 (0.91)
FEV1/FVC ratio -0.02 (0.91) -0.20 (0.19) -0.30 (0.05) -0.27 (0.07)
Six minutes walk distance (meter) -0.02 (0.92) 0.06 (0.69) 0.05 (0.76) -0.05 (0.76)
Body mass index -0.12 (0.45) -0.26 (0.08) -0.10 (0.50) 0.0 (1.00)
  1. *correlation (p value)