TABLE 3

Cell counts in bronchoalveolar lavage

Data are presented as mean (S.D.) or median (range). Data were compared between all subject groups using ANOVA, with P values shown.

HNSSmokersCOPDP Value
Number6610
Volume instilled, ml280 (116)316 (112)334 (115)0.25
Volume recovered, ml174 (73)166 (35)133 (76)0.45
Recovery, %62.3 (6.7)54.8 (9.3)33.4 (13.2)0.0002
Total alveolar macrophage count, 106 cells · ml−10.12 (0.05)0.26 (0.17)0.37 (0.25)0.096
Macrophages, %a91.4 (81.3–97.0)93.1 (88.0–99.5)92.4 (80.8–98.3)0.816
Neutrophils, %a0.75 (0–3.5)0.875 (0–1.5)2.75 (0.75–12.8)0.016
Lymphocytes, %a8.34 (1.25–14.8)5.88 (0.5–12.0)3.63 (0.25–10.3)0.70
Eosinophils, %a0 (0–1)0 (0–0.75)0.375 (0–2.5)0.16
  • a Of total nonsquamous cells.