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Table 1 Baseline Characteristics and Outcomes

From: N-acetylcysteine exposure is associated with improved survival in anti-nuclear antibody seropositive patients with usual interstitial pneumonia

Variable

IPF Cohort (n = 216)

IPAF-UIP Cohort (n = 77)

Combined UIP Cohort (n = 293)a

Age, mean (±SD)

69.3 (7.8)

63.3 (9.9)

67.7 (8.8)

Male Gender, n (%)

160 (74.1)

41 (53.3)

201 (68.6)

Race, n (%)

 White

182 (84.3)

59 (76.6)

241 (82.3)

 African American

15 (6.9)

9 (11.7)

24 (8.2)

 Hispanic

10 (4.6)

8 (10.4)

18 (6.1)

 Asian

9 (4.2)

1 (1.3)

10 (3.4)

Any auto-antibody (+)

93 (43.1)

74 (96.1)

167 (57.0)

ANA (+) b

84 (38.9)

64 (83.1)

148 (50.5)

HRCT, n (%)

 UIP

156 (72.2)

41 (54)

197 (67.5)

 Possible UIP

36 (16.7)

14 (18.4)

50 (17.1)

 Inconsistent with UIP

24 (11.1)

21 (27.6)

45 (15.4)

UIP by SLB c, n (%)

93 (97.9)

55 (100)

148 (98.7)

FVC (% pred), mean (±SD)

67.5 (17.4)

63.5 (16.9)

66.5 (17.4)

DLCO (% pred), mean (±SD)

51.1 (17.1)

48.1 (16.8)

50.3 (17.1)

GAP Score, mean (±SD)

4.1 (1.6)

3.7 (1.6)

4.0 (1.6)

Outcomes

 Death

108 (50)

35 (45.5)

143 (48.8)

 Transplant

14 (6.5)

14 (18.2)

28 (9.6)

  1. Abbreviations: IPF idiopathic pulmonary fibrosis, IPAF interstitial pneumonia with autoimmune features, ANA anti-nuclear antibody, HRCT high-resolution computed tomography, UIP usual interstitial pneumonia, SLB surgical lung biopsy, FVC forced vital capacity, DLCO diffusion capacity of the lung for carbon monoxide, GAP gender, age, physiology
  2. aException for n: Other auto-antibody (n = 88); HRCT (n = 292); UIP by SLB (n = 150); DLCO (n = 272)
  3. bANA titer ≥1:320 or nucleolar or centromere staining pattern at any titer
  4. cTwo patients without UIP by SLB were deemed to have IPF due to family history of pulmonary fibrosis