Table 1.
Baseline demographics of entire cohort and of completers and non-completers of pulmonary rehabilitation
| Overall (n=440) | PR completers (n=229) | PR non-completers (n=211) | |
|---|---|---|---|
| Age (years) | 66.2 (9.0) | 66.5 (9.0) | 65.8 (9.1) |
| Sex, female, n (%) | 179 (41) | 91 (39.7) | 88 (41.7) |
| Race | |||
| Caucasian | 317 (72) | 165 (72) | 152 (72) |
| African American | 76 (17) | 42 (18) | 34 (16) |
| Other | 47 (11) | 22 (10) | 25 (12) |
| BMI (m/kg2) | 28.0 (7.5) | 28.0 (7.3) | 28.1 (7.7) |
| FEV1 (L)#,* | 1.2 (0.6) | 1.3 (0.6) | 1.1 (0.6) |
| FEV1 % predicted# | 44.2 (19.3) | 46.3 (20.0) | 42.3 (18.4) |
| FVC (L)# | 2.5 (0.9) | 2.4 (0.9) | 2.6 (0.9) |
| Recent hospitalization, n (%) | 178 (40.5) | 88 (34.4) | 90 (42.7) |
| Smoking status* | |||
| Current | 52 (11.8) | 16 (7.0) | 36 (17.3) |
| Past | 362 (82.3) | 197 (86.8) | 165 (79.3) |
| Non | 21 (4.8) | 14 (6.2) | 7 (3.4) |
| Smoking pack years | 49.9 (42.3) | 46.9 (42.2) | 53.0 (42.2) |
| Home oxygen use, n (%) | 220 (50) | 117 (51.1) | 103 (48.8) |
| Comorbidity index | 2.2 (1.6) | 2.1 (1.5) | 2.3 (1.6) |
| Arthritis, n (%) | 189 (43) | 93 (40.6) | 96 (45.5) |
| Coronary artery disease, n (%) | 105 (23.9) | 59 (25.8) | 46 (21.8) |
| Congestive heart failure, n (%) | 46 (10.5) | 26 (11.4) | 20 (9.5) |
| Cerebrovascular disease, n (%) | 34 (7.7) | 15 (6.6) | 19 (9.0) |
| Peripheral vascular disease, n (%) | 44 (10) | 24 (10.5) | 20 (9.5) |
| Dementia, n (%) | 10 (2.3) | 3 (1.3) | 7 (3.3) |
| Depression, n (%) | 91 (20.7) | 46 (20.1) | 45 (21.3) |
| Diabetes mellitus, n (%) | 100 (22.7) | 52 (22.7) | 48 (22.7) |
| Hypertension, n (%) | 277 (63) | 141 (61.6) | 136 (64.5) |
| Malignancy, n (%) | 96 (21.8) | 44 (19.2) | 52 (24.6) |
| Obstructive sleep apnea, n (%) | 50 (11.4) | 29 (12.7) | 10 (21) |
Notes: All values are expressed as mean (standard deviation) unless otherwise specified.
#
Spirometry data available in 350 (80%) patients within 2 years prior to enrollment.
*
P<0.05 for comparisons between completers and non-completers.
Abbreviations: PR, pulmonary rehabilitation; BMI, body mass index; FEV1, forced expiratory volume in the first second; FVC, forced vital capacity.