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Table 5 Changes of CCQ and SGRQ scores in subjects who successful quitted smoking fortwo months (n = 36)

From: Development, validity and responsiveness of the Clinical COPD Questionnaire

  Baseline 2 months SC p value
CCQ    
Healthy smokers (n = 19) 0.6 (0.1–2.1) 0.3 (0.0–1.6) * 0.012
GOLD (0-III) (n = 17) 1.5 (0.5–4.7) 1.0 (0.2–3.0) * 0.035
SGRQ    
GOLD (0-III) (n = 12) 27.0 (8.1–62.4) 23.9 (6.3–53.1) 0.433
  1. SGRQ = St. George Respiratory Questionnaire. SC = smoking cessation. * p < 0.05. Wilcoxon U test.