Table 1.

Bronchoalveolar lavage cell counts and differentials at diagnosis

	Median	IQR
Total cell count (ml-1)*	620,000	330,000 – 900,000
Differential (%)
Macrophages	62.5	48 – 75
Neutrophils	27.5	21.5 – 55
Lymphocytes	5	4.5 – 13

Data are presented as median and interquartiles range (IQR) for the 16 diagnostic broncho-alveolar lavages.

*Total cell count is reported for 8 BAL as BALF cellularity was undetermined (described as “uncountable”) for the 8 others.