Table 1 Baseline characteristics of all patients and patients with and without at least one symptom based exacerbations
Characteristics | All patients | No symptom-based exacerbation | At least one symptom-based exacerbation |
|---|---|---|---|
Number of patients | 121 | 46 | 75 |
Sex, male | 74 (61.2) | 27 (58.7) | 47 (62.7) |
Age, yr | 67.4 ± 10.5 | 68.6 ± 11.3 | 66.6 ± 9.9 |
FEV 1 | 1.29 ± 0.58 | 1.42 ± 0.68 | 1.20 ± 0.50§ |
FEV 1 % predicted | 47.7 ± 18.5 | 53.7 ± 18.6 | 44.0 ± 17.6┼ |
Charlson's comorbidity index score | 1 [0-2] | 1 [0-2] | 1 [0-2] |
Current smoking | 28 (23.1) | 8 (17.4) | 20 (27.0) |
Recruitment | |||
Scheduled outpatient clinic visit | 83 (86.6) | 30 (36.1) | 53 (63.9) |
Scheduled general physician visit | 14 (11.6) | 5 (35.7) | 9 (64.3) |
Discharge from hospital admission | 24 (19.8) | 11 (45.8) | 13 (54.2) |
Hospital admissions 1yr prior to study | |||
-0 | 68 (56.2) | 25 (54.3) | 43 (57.3) |
-1 | 32 (26.4) | 15 (32.6) | 17 (22.7) |
-2 or more | 21 (17.4) | 6 (13.1) | 15 (20.0) |
Home oxygen therapy | 12 (9.9) | 5 (10.9) | 7 (9.3) |