Table 2.
Never Smoker | Smokers | |||
---|---|---|---|---|
Control | COPD | P | ||
BAL SP-D (uncorrected) ng/ml | 558 ± 309 | 287 ± 204 | 235 ± 203 | <0.0001 |
BAL SP-D (corrected) μg/ml | 51.9 ± 64.3 | 16.0 ± 19.3 | 19.1 ± 20.5 | <0.0001 |
BAL phospholipid (nmol/ml) | 14.8 ± 7.4 | 8.9 ± 7.8 | 8.5 ± 7.7 | <0.0001 |
BAL SP-D ng/phospholipid nmol | 42.2 ± 31.5 | 52.1 ± 61.8 | 44.8 ± 33.3 | N.S. |
Shown are means ± standard deviations; P values were calculated using ln transformed data (see Additional File 1: Supplemental Table S1).