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Table 6 Mean difference in SGRQ-CM scores between patients at different levels of disease severity

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

 

Activity Subscale

Impact Subscale

SGRQ-CM Total Score

Mean Difference (95% CI)

Effect Size

p value

Mean Difference (95% CI)

Effect Size

p value

Mean Difference (95% CI)

Effect Size

p value

GOLD Classification

 IV vs III

9.35 (0.05–18.64)

0.34

0.04

12.04 (1.45–22.63)

0.45

0.02

10.78 (1.38–20.17)

0.37

0.02

 III vs II

9.51 (2.58–16.43)

0.33

< 0.01

8.91 (1.02–16.79)

0.31

0.00

8.26 (1.27–15.26)

0.28

< 0.01

mMRC Dyspnea grade

 IV vs III

14.58 (9.33–19.83)

0.58

< 0.001

5.07 (2.54–12.67)

0.37

0.19

8.59 (2.59–14.59)

0.43

< 0.01

 III vs II

8.89 (3.39–14.39)

0.39

< 0.01

10.57 (2.60–18.54)

0.49

0.01

9.86 (3.57–16.15)

0.46

< 0.01

  1. GOLD Global Initiative for Obstructive Lungs disease; GOLD II, FEV1 50 to 80% predicted; GOLD III, FEV1 30 to 50% predicted; GOLD IV, FEV1 < 30% predicted; mMRC modified medical research council dyspnea scale; SGRQ-CM, Malaysian version of St George’s Respiratory COPD specific Questionnaire