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Table 1 Demographic characteristics of the patients

From: Underlying and immediate causes of death in patients with idiopathic pulmonary fibrosis

 

Total

Male

Female

p-valuea

N (%)

132 (100)

97 (73.5)

35 (26.5)

 

Age years (SD)

70.5 (9.78)

70.2 (10.34)

71.3 (8.17)

0.562

Median survival (Mo)

42.0

36.0

60.0

0.045

Non-smokers n (%)

45 (35.2)

21 (22.1)

24 (72.7)

< 0.001

Former smokers n (%)

66 (51.6)

60 (63.2)

6 (18.2)

< 0.001

Current smokers n (%)

17 (13.3)

14 (14.7)

3 (9.1)

< 0.001

Pulmonary function test results at the time of diagnosis b

 FVC % predicted (SD)

76.7 (18.51)

75.7 (18.91)

79.2 (17.39)

0.354

 FEV1% predicted (SD)

77.0 (16.99)

75.3 (17.22)

81.6 (15.66)

0.065

 FEV1/FVC % predicted

101.4 (9.68)

100.3 (9.45)

104.2 (9.88)

0.049

 DLCO % predicted (SD)

56.1 (17.51)

55.8 (18.02)

56.7 (16.33)

0.803

  1. p-values calculated using Fisher test, Chi-squared test or Kaplan-Meier log-rank test
  2. aBetween genders
  3. bSpirometry results were missing from 6 patients and diffusion capacity results from 8 patients
  4. N number, Mo months, FVC forced vital capacity, FEV1 forced expiratory volume in one second, DLco diffusion capacity of carbon monoxide