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Table 3 HRQoL scores after controlling factors affecting the quality of life of patients with COPD

From: Validity of EQ-5D utility index and minimal clinically important difference estimation among patients with chronic obstructive pulmonary disease

 

EQ-5D utility*

EQ-VAS*

CAT*

Mean score (95% confidence interval)

GOLD-1, FEV1 ≥ 80% predicted

0.900 a (0.855, 0.944)

73.38 a (67.15, 79.62)

12.86 a (9.96, 15.77)

GOLD-2, 50% ≤ FEV1 < 80% predicted

0.857 a (0.836, 0.879)

67.73 ab (64.74, 70.72)

13.95 a (12.55, 15.34)

GOLD-3, 30% ≤ FEV1 < 50% predicted

0.793 b (0.766, 0.821)

63.32 b (59.48, 67.16)

19.75 b (17.96, 21.53)

GOLD-4, FEV1 < 30% predicted

0.664 c (0.601, 0.728)

51.08 c (42.25, 59.91)

24.08 b (19.97, 28.19)

  1. HRQoL Health-Related Quality of Life, FEV1 forced expiratory volume in 1 s:
  2. *p < 0.001, p-value for severity group was calculated by ANCOVA; Covariates: age, gender, smoke years, insurance type, employment status, number of comorbidities;
  3. a; b; c; the same superscript letters indicate non-significant difference between GOLD groups based on LSD post-hoc test (p < 0.05)