Table 2.
Functional status, disease-specific health status, and psychological well-being.a
| Total group (n = 183) | Patients with cognitive impairment (n = 76) | Patients without cognitive impairment (n = 107) | p value | |
|---|---|---|---|---|
| Functional status | ||||
| Functional exercise capacity | ||||
| 6MWT (meters) | 432 (111.8) | 421.8 (112.2) | 439.2 (111.5) | 0.30 |
| 6MWT (% predicted) | 68.3 (16.6) | 66.1 (16.7) | 69.8 (16.4) | 0.14 |
| 6MWT < 350 meters, n (%) | 45 (24.6) | 22 (28.9) | 23 (21.5) | 0.16 |
| Daily activities | ||||
| COPM mobility domain, n (%) | 147 (80.3) | 64 (84.2) | 83 (77.6) | 0.27 |
| Performance score (points) | 3.8 (1.5) | 3.7 (1.7) | 3.8 (1.4) | 0.66 |
| Satisfaction score (points) | 2.8 (1.7) | 2.7 (1.9) | 2.9 (1.7) | 0.59 |
| COPM productivity domain, n (%) | 117 (63.9) | 50 (65.8) | 67 (62.6) | 0.66 |
| Performance score (points) | 3.9 (1.5) | 3.8 (1.5) | 3.9 (1.5) | 0.63 |
| Satisfaction score (points) | 3.3 (1.8) | 3.4 (1.9) | 3.2 (1.8) | 0.65 |
| COPM leisure domain, n (%) | 94 (51.4) | 38 (50.0) | 56 (52.3) | 0.76 |
| Performance score (points) | 3.4 (1.6) | 3.5 (1.5) | 3.4 (1.7) | 0.78 |
| Satisfaction score (points) | 2.8 (1.6) | 2.7 (1.6) | 2.9 (1.7) | 0.65 |
| COPM self-care domain, n (%) | 87 (47.5) | 39 (51.3) | 48 (44.9) | 0.39 |
| Performance score (points) | 4.2 (1.6) | 4.3 (1.5) | 4.0 (1.6) | 0.33 |
| Satisfaction score (points) | 3.2 (1.8) | 3.6 (1.9) | 2.7 (1.6) | 0.04 |
| Disease-specific health status | ||||
| CAT score (points) | 22.0 (6.5) | 22.7 (6.1) | 21.6 (6.7) | 0.27 |
| SGRQ-C symptom score (points) | 61.1 (19.9) | 60.1 (19.7) | 61.9 (20.1) | 0.55 |
| SGRQ-C activity score (points) | 80.5 (16.2) | 82.8 (14.0) | 78.9 (17.5) | 0.11 |
| SGRQ-C impact score (points) | 50.1 (19.0) | 53.2 (18.4) | 48.0 (19.3) | 0.07 |
| SGRQ-C total score (points) | 61.4 (15.4) | 63.5 (14.7) | 59.9 (15.8) | 0.13 |
| Psychological well-being | ||||
| HADS Depression score (points) | 7.4 (4.0) | 7.9 (4.0) | 6.9 (7.4) | 0.10 |
| HADS Anxiety score (points) | 8.0 (4.5) | 8.7 (4.7) | 7.4 (4.3) | 0.06 |
| BDI score score (points) | 15.5 (9.6) | 17.2 (9.6) | 14.3 (9.5) | 0.05 |
| SCL-90 Anxiety score (points) | 16.2 (6.2) | 16.5 (5.6) | 16.0 (6.6) | 0.54 |
| SCL-90 Agoraphobia score (points) | 10.1 (4.2) | 10.8 (4.2) | 9.6 (4.2) | 0.06 |
| SCL-90 Depression score (points) | 28.0 (10.7) | 28.7 (10.5) | 27.5 (10.8) | 0.46 |
| SCL-90 Somatization score (points) | 23.4 (7.6) | 24.0 (8.0) | 23.0 (7.2) | 0.40 |
| SCL-90 Insufficiency score (points) | 17.9 (5.9) | 18.9 (6.3) | 17.2 (5.4) | 0.05 |
| SCL-90 Sensitivity score (points) | 26.2 (8.2) | 27.2 (9.0) | 25.4 (7.5) | 0.15 |
| SCL-90 Hostility score (points) | 7.7 (2.3) | 7.8 (2.3) | 7.7 (2.3) | 0.69 |
| SCL-90 Insomnia score (points) | 6.6 (2.9) | 13.2 (4.5) | 12.2 (3.9) | 0.24 |
| SCL-90 Psychoneuroticism score (points) | 148.6 (42.3) | 153.9 (42.7) | 144.8 (41.8) | 0.15 |
6MWT, 6-min walk distance; BDI, Beck Depression Inventory; COPM, Canadian Occupational Performance Measure; HADS, Hospital Anxiety and Depression Scale; SCL-90, Symptom Checklist 90; SGRQ-C, COPD-specific version of the St. George respiratory questionnaire.
aData shown as mean (SD) or as n (%).