TABLE 4.
BRONCHOALVEOLAR LAVAGE RECOVERY VOLUME WAS INFLUENCED BY PREVIOUS SMOKING, TOTAL LUNG CAPACITY, FEV1/FVC, AND THE PERCENTAGE OF POLYMORPHONUCLEAR LEUKOCYTES IN LAVAGE
| Systemic Sclerosis Features Found Significant on Univariate Testing | Estimate* | P Value |
|---|---|---|
| BAL PMN, % | −1.24 | 0.010 |
| FEV1/FVC | 1.52 | 0.021 |
| Cigarette smoking, pack-years | 17.19 | 0.031 |
| Total lung capacity, %predicted | 0.75 | 0.047 |
| Serum WBC, per mm3 | 2.26 | 0.111 |
| Gastroesophageal reflux | −14.50 | 0.188 |
| DlCO, %predicted | 0.32 | 0.337 |
| CPK units | −0.02 | 0.395 |
| Creatinine units | −7.67 | 0.677 |
| FEV1, % predicted | −0.15 | 0.710 |
Definition of abbreviations: BAL = bronchoalveolar lavage; CPK = creatine phosphokinase; PMN = polymorphonuclear leukocytes; WBC = white blood cells.
*
Effect estimates for results of stepwise multiple regression analysis. Statistically significant features are in bold type.