Table 2.
Characteristics of SCI Subjects Who Use an MWC More Than Half of the Time
| Dyspnea While Talking, Eating, or Dressing
|
||||
|---|---|---|---|---|
| Yes (n=20)
|
No (n=65)
|
|||
| Characteristic | n | n | ||
| Mean age (y) | 20 | 50.2 ± 13.6 | 65 | 50.6 ± 15.1 |
| Mean years postinjury | 20 | 17.5 ± 13.9 | 65 | 15.9 ± 9.9 |
| Sex | ||||
| Male | 17 | 85 | 61 | 93.9 |
| Female | 3 | 15 | 4 | 6.2 |
| Race | ||||
| White | 20 | 100 | 60 | 92.3 |
| Nonwhite | 0 | 0 | 5 | 7.7 |
| Injury level and severity* | ||||
| Cervical motor complete and C | 16 | 80 | 52 | 80 |
| Other motor complete, C and all D | 4 | 20 | 13 | 20 |
| Body mass index | ||||
| Normal (<25kg/m2) | 11 | 55 | 25 | 38.5 |
| Overweight (≥25 to <30 kg/m2) | 4 | 20 | 20 | 30.8 |
| Obese (≥30 kg/m2) | 5 | 25 | 20 | 30.8 |
| Smoking | ||||
| Ever | 18 | 90 | 44 | 67.7 |
| Current | 5 | 25 | 12 | 18.5 |
| Former | 13 | 65 | 32 | 49.2 |
| Mean lifetime pack years (ever smokers) | 18 | 30.6 ± 28.0 | 44 | 25.6 ± 24.9 |
| Pulmonary function test | ||||
| % predicted FVC | 18 | 54.6 ± 18.5 | 61 | 58.7 ± 15.5 |
| % predicted FEV1 | 18 | 56.1 ± 18.6 | 61 | 60.4 ± 16.6 |
| FEV1/FVC | 18 | 0.8 ± 0.1 | 62 | 0.8 ± 0.1 |
| MEP (cmH2O) | 14 | 79.7 ± 43.8 | 42 | 64.3 ± 27.9 |
| MIP (cmH2O) | 19 | 57.3 ± 23.7 | 60 | 67.9 ± 26.6 |
| Patients taking bronchodilators | 1 | 5.0 | 7 | 10.8 |
| Occupational exposure to dust | 12 | 60.0 | 26 | 40.0 |
NOTE. Values are mean ± SD or % unless otherwise indicated.
Abbreviations: FEV1, forced expiratory volume in 1 second; FVC, forced vital capacity.
*
See text for definition.