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Table 4 Internal consistency

From: The validity and precision of the leicester cough questionnaire in COPD patients with chronic cough

  Cronbach's alpha coefficient
LCQ* Birring[16] Huisman[17] This study‡
   physical 0.79 0.77 0.67
   psychological 0.89 0.84 0.75
   social 0.85 0.83 0.74
   total 0.92 0.93 0.86
  1. * Leicester Cough questionnaire
  2. † patients with chronic cough
  3. ‡ patients with COPD and chronic productive cough