Table 1.
Characteristics of longitudinal cohort
|
All subjects |
||
|---|---|---|
| Variables | Survivors (n = 324) | Deceased (n = 37) |
| Age (years) | 48.9± 14.4 | 65.0± 12.4 |
| Years since SCI | 16.7± 12.2 | 24.2± 16.5 |
| Age at SCI (years) | 32.2± 13.6 | 40.8± 19.2 |
| Calendar year of injury | ||
| 1940–1949 | 7 (2.2%) | 5 (13.5%) |
| 1950–1959 | 20 (6.2%) | 5 (13.5%) |
| 1960–1969 | 34 (10.5%) | 5 (13.5%) |
| 1970–1979 | 91 (28.1%) | 8 (21.6%) |
| 1980–1989 | 85 (26.2%) | 7 (18.9%) |
| 1990– | 87 (26.9%) | 7 (18.9%) |
| BMI (kg/m2) | 26.3 ± 5.0 (n = 323) | 26.0± 6.4 (n = 37) |
| Race | ||
| White | 302 (93.2%) | 35 (94.6%) |
| Non-white | 22 (6.8%) | 2 (5.4%) |
| Cigarette smoking | ||
| Current | 94 (29.0%) | 9 (24.3%) |
| All former | 126 (39.0%) | 21 (56.8%) |
| ≤ 7 years quit | 29 (80.6%) | 7 (19.4%) |
| > 7 years quit | 97 (87.4%) | 14 (12.6%) |
| Never | 104 (32.1%) | 7 (18.9%) |
| Pack-yearsa | 30.5 ± 27.4 (n = 220) | 40.9± 31.4 (n = 30) |
| Non-traumatic injury | 21 (6.5%) | 7 (18.9%) |
| SCI motor level | ||
| Complete | ||
| Cervical | 69 (21.3%) | 6 (16.2%) |
| High thor. (T1–T4) | 48 (14.8%) | 4 (10.8%) |
| Low thor. (T5–T12) | 40 (12.4%) | 7 (18.9%) |
| Others | 35 (10.8%) | 3 (8.1%) |
| Incomplete | ||
| Cervical ASIA C | 35 (10.8%) | 6 (16.2%) |
| Cervical ASIA D | 40 (12.4%) | 2 (5.4%) |
| Other ASIA C | 25 (7.7%) | 6 (16.2%) |
| Other ASIA D | 32 (9.9%) | 3 (8.1%) |
| Pulmonary function | ||
| %-predicted FVC | 76.6%± 18.1 (n = 312) | 67.3%± 18.4 (n = 36) |
| %-predicted FEV1 | 76.5%± 18.3 (n = 312) | 64.6%± 20.5 (n = 36) |
| FEV1/FVC | 0.78± 0.09 (n = 318) | 0.72± 0.14 (n = 36) |
| MIP (cm H2O) | 88.7± 33.7 (n = 316) | 64.9± 26.8 (n = 36) |
| MEP (cm H2O) | 104.4± 50.7 (n = 204) | 91.0± 39.4 (n = 21) |
| Illnessesb | ||
| Heart Disease | 19 (5.9%) | 12 (32.4%) |
| Hypertension | 79 (24.4%) | 18 (48.7%) |
| Diabetes | 27 (8.3%) | 9 (24.3%) |
| Asthma | 27 (8.3%) | 4 (10.8%) |
| COPD | 26 (8.0%) | 4 (10.8%) |
| Chronic respiratory diseasec | 45 (13.9%) | 6 (16.2%) |
| Symptomsb | ||
| Any wheeze | 156 (48.2%) | 22 (59.5%) |
| Persistent wheeze | 62 (19.1%) | 12 (32.4%) |
| Chronic cough | 59 (18.2%) | 8 (21.6%) |
| Chronic phlegm | 68 (21.0%) | 11 (29.7%) |
a
Pack-years reported for current and former smokers
b
Please refer to text definitions
c
Asthma or COPD. For continuous variables, mean ±SD presented