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