Table 1 Demographics and bronchoalveolar lavage fluid characteristics of patients with diffuse lung diseases (DLD) by diagnosis

Age, years (mean ± SD)^*

46.8 ± 15.8

38.7 ± 11.2

51.3 ± 16.3

61.5 ± 12.0

57.9 ± 11.4

59.1 ± 11.3

73.4 ± 8.2

Gender (female/male)^†

118/84

60/46

32/21

26/17

5/5

20/5

1/7

Smoking status (no/yes)^{†† a}

151/48

78/26

44/9

29/13

7/2

20/5

2/6

Total cell count ^b, ×10⁵cells/mL (median, P25-P75)^**

1.7 (0.9–3.3)

1.6 (0.8–2.8)

2.8 (1.2–6.1)

1.4 (0.8–2.4)

1.6 (0.7–2.4)

1.2 (0.8–2.5)

1.5 (1.0–3.6)

Neutrophils ^b,% (median, P25-P75)^*

2.8 (1.2–5.8)

1.6 (1.0–3.0)

4.8 (2.7–8.2)

5.8 (2.4–9.8)

8.7 (5.0–9.9)

3.6 (1.5–9.8)

7.2 (4.7–16.5)

Eosinophils ^b, % (median, P25-P75)^*

0.6 (0.2–2.0)

0.4 (0.1–1.0)

1.6 (0.5–3.7)

0.8 (0.2–2.8)

1.6 (0.4–6.5)

0.4 (0.0–1.5)

2.5 (1.1–8.7)

Alveolar macrophages ^b, % (median, P25-P75)^*

49.2 (34.6–65.2)

56.0 (37.6–68.7)

32.4 (22.9–49.0)

55.2 (42.0–66.4)

44.1 (28.1–58.2)

55.8 (43.3–68.2)

58.6 (44.7–65.3)

Lymphocytes ^b, % (median, P25-P75)^*

41.8 (28.0–57.4)

39.9 (23.9–56.6)

53.2 (41.0–69.1)

31.2 (23.8–43.8)

42.3 (27.6–57.1)

30.0 (23.7–44.8)

26.8 (20.1–33.0)