Table 3.

Dilution-Transformed Colony Counts for Patients With Gram-Negative Pneumonia Documented by Bronchoalveolar Lavage Analysis

Counta	Patients, No. (%)
≥3 × 105	49 (36.6)
≥3 × 106	50 (37.3)
≥3 × 107	35 (26.1)
Total	134 (100)

Values were determined on the basis of methods reported by Zaccard et al [16]. Dilution corrections were made on the basis of urea dilution findings in patients with ventilator-requiring hospital-acquired bacterial pneumonia [15].

^a Colonies per milliliter of epithelial lining fluid.