Table 3.
CRP in quartiles (Q) and pulmonary function
| Mean %- predicted FEV1, adjusted for each factor listed | ||||
|---|---|---|---|---|
| CRP, mg/L | Unadjusted | COPD | SCI level and completeness | Pack years, BMI |
| P for trend | .034 | .062 | .045 | .216 |
| Q 1 (≥4.0) | 78.3 | 73.6 | 77.2 | 81.1 |
| Q 2 (1.8 to <4.0) | 77.7 | 70.9 | 76.0 | 80.6 |
| Q 3 (1.0 to <1.8) | 82.4 | 75.6 | 81.4 | 80.3 |
| Q 4 (<1.0) | 93.9 | 87.2 | 91.9 | 92.1 |
| Mean %- predicted FVC, adjusted for each factor listed | ||||
|---|---|---|---|---|
| CRP, mg/L | Unadjusted | COPD | SCI level and completeness | Pack years, BMI |
| P for trend | .050 | .068 | .060 | .172 |
| Q 1 (≥4.0) | 75.4 | 73.3 | 74.0 | 76.9 |
| Q 2 (1.8 to <4.0) | 78.5 | 75.5 | 76.4 | 81.2 |
| Q 3 (1.0 to <1.8) | 82.0 | 79.1 | 80.1 | 80.6 |
| Q 4 (<1.0) | 89.0 | 86.1 | 86.8 | 88.0 |
| Mean FEV1/FVC, adjusted for each factor listed | ||||
|---|---|---|---|---|
| CRP, mg/L | Unadjusted | COPD | Age, SCI level and completeness | Age, pack years, BMI |
| P for trend | .090 | .165 | .355 | .794 |
| Q 1 (≥4.0) | 77.0 | 73.5 | 79.8 | 80.2 |
| Q 2 (1.8 to <4.0) | 74.9 | 69.8 | 74.4 | 74.3 |
| Q 3 (1.0 to <1.8) | 77.6 | 72.5 | 78.0 | 76.7 |
| Q 4 (<1.0) | 82.6 | 77.6 | 81.6 | 80.6 |
CRP = C-reactive protein; FEV1 = forced expiratory volume in 1 second; COPD = chronic obstructive pulmonary disease; SCI = spinal cord injury; BMI = body mass index; FVC = forced vital capacity.