From: Longitudinal associations between sleep disturbance and disease severity in patients with COPD
 | Total (N = 157) | Sleep disturbance (n = 74) | No sleep disturbance (n = 83) | Unadjusted p-value |
---|---|---|---|---|
Age, year, mean (SD) | 66.3 (6.4) | 66.5 (6.2) | 66.1 (6.5) | 0.67 |
Sex, male, n (%) | 85 (54.1%) | 44 (59.4%) | 41 (49.4%) | 0.21 |
White, n (%) | 151 (96.2%) | 70 (94.6%) | 81 (97.5%) | 0.33 |
BMI, mean (SD) | 27.6 (4.1) | 26.9 (4.0) | 28.2 (4.2) | 0.04 |
Pack years, mean (SD) | 64.8 (34.1) | 66.9 (34.2) | 62.9 (34.1) | 0.46 |
Current smoker, n (%) | 62 (39.5%) | 35 (47.3%) | 27 (32.5%) | 0.06 |
Supplemental oxygen use, n (%) | 9 (5.7%) | 5 (6.8%) | 4 (4.8%) | 0.60 |
ICS use, n (%) | 8 (5.1%) | 6 (8.1%) | 2 (2.4%) | 0.11 |
OCS use,a n (%) | 40 (25.5%) | 20 (27.0%) | 20 (24.1%) | 0.67 |
GOLD stage, n (%) | ||||
 Stage 1 | 46 (29.3%) | 20 (27.0%) | 26 (31.3%) | 0.77 |
 Stage 2 | 87 (55.4%) | 42 (63.5%) | 45 (54.2%) |  |
 Stage 3 | 21 (13.4%) | 10 (13.5%) | 11 (13.3%) |  |
 Stage 4 | 3 (1.9%) | 2 (2.7%) | 1 (1.2%) |  |
GOLD ABCD group, n (%) | ||||
 Group A | 106 (67.5%) | 47 (63.5%) | 59 (71.1%0 | 0.64 |
 Group B | 26 (16.6%) | 13 (17.6%) | 13 (15.7%0 |  |
 Group C | 14 (8.9%) | 7 (9.5%) | 7 (8.4%) |  |
 Group D | 11 (7.0%) | 7 (9.5%) | 4 (4.8%) |  |
Comorbidities, n (%) | ||||
 Diabetes | 9 (5.7%) | 3 (4.2%) | 6 (7.2%) | 0.42 |
 Hyperlipidemia | 84 (53.5%) | 39 (53.4%) | 45 (55.6%) | 0.79 |
 Cancer | 25 (15.9%) | 8 (10.8%) | 17 (20.5%) | 0.10 |
 Asthma | 17 (10.8%) | 30 (40.5%) | 20 (24.7%) | 0.32 |
 GERD | 50 (31.8%) | 10 (13.9%) | 7 (8.8%) | 0.04 |
 Bronchitis | 75 (47.8%) | 42 (60.0%) | 33 (42.3%) | 0.03 |
BDI-II category, n (%) | ||||
 Minimal/Mild | 151 (96.2%) | 69 (93.2%) | 82 (98.8%) | 0.07 |
 Moderate/ Severe | 6 (3.8%) | 5 (6.8%) | 1 (1.2%) | 0.56 |
 FEV1 pp., mean (SD) | 69.3 (18.4) | 8.4 (19.0) | 70.2 (18.1) | 0.40 |
 mMRC, mean (SD) | 1.1 (0.9) | 1.1 (1.1) | 0.9 (0.9) | 0.005 |
 SGRQ, mean (SD) | 25.0 (17.2) | 29.0 (18.1) | 21.4 (15.6) | 0.72 |
 ISWT distance (m), mean (SD) | 399.6 (146.7) | 394.9 (141.8) | 403.6 (152.0) | 0.58 |
 RV pp., mean (SD) | 138.4 (35.9) | 140.1 (34.8) | 136.8 (37.0) | 0.99 |
 RV/TLC, mean (SD) | 0.49 (0.10) | 0.49 (0.10) | 0.49 (0.10) | 0.15 |
 DLCO pp., mean (SD) | 66.9 (19.8) | 64.5 (21.6) | 69.1 (18.0) | 0.56 |