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Table 7 Mean difference in clinical and health status measures during exacerbation and after one month of treatment (n = 47)

From: Validation and clinical interpretation of the St George’s respiratory questionnaire for COPD (SGRQ-C) after adaptation to Malaysian language and culture, in patients with COPD

 Mean Difference (95% CI)Effect Sizepvalue
SGRQ-CM
 Activity5.94 (5.29–6.58)0.47< 0.001
 Impact6.05 (5.30–6.80)0.52< 0.001
Spirometry Values
 FEV1/FVC−1.57 (−1.85–1.30)0.18< 0.001
 FEV1 (%)−1.58 (−1.86–1.31)0.19< 0.001
  1. Exacerbation Patients n = 47; difference is significant at 0.05 level; FEV1, forced expiratory volume in one second; FVC, Forced vital capacity; FEV1 (%), percentage predicted FEV1; Spirometric data were post-bronchodilator; SGRQ-CM, Malaysian version of St George’s Respiratory COPD specific Questionnaire