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Table 4 Results of correlation between baseline SGRQ-CM scores and other clinical and health status measures

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

FEV1%predicted−0.31− 0.42− 0.40− 0.42
EQ-5D-5 L UI−0.71− 0.74− 0.80−0.82
EQ-VAS−0.53−0.59− 0.56−0.61
mMRC Dyspnea0.640.790.630.72
  1. Results from Pearson correlation Coefficient test; Correlation is significant at the 0.05 level (2-tailed); High % Predicted FEV1 and EQ-5D-5 L score indicate better quality of life; CAT COPD assessment test; EQ-5D-5 L UI, European Quality of life 5-Dimension 5-Level questionnaire Utility index score; EQ-VAS, European Quality of life 5-Dimension 5-Level questionnaire Visual analogue score; FEV1, forced expiratory volume in one second; FVC, Forced vital capacity; FEV1 (%), percentage predicted FEV1; mMRC modified medical research council dyspnea scale; spirometric data were post-bronchodilator