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Table 1 Baseline demographic characteristics of patients with IPF with a disease severity of stage I according to the JRS severity system

From: Efficacy of early antifibrotic treatment for idiopathic pulmonary fibrosis

Variable

Mean ± SD or number

Range

Age, years

71.5 ± 7.0

43–86

Sex, male/female

148/31

 

BMI, kg/m2

21.6 ± 4.3

14.0–32.6

Smoking history, N/F/C

22/121/36

 

GAP staging (I/II/III)

111/58/10

 

mMRC (0/1/2/3/4)

28/72/62/13/3

 

PaO2, Torr

90.3 ± 9.1

62.7–127

%FVC, %

81.5 ± 19.2

37.4–129.1

%DLco, %

68.8 ± 21.3

23.7–143.2

Desaturation on 6MWT, ±

73/106

 

KL-6, U/ml

938 ± 586

193–3374

SP-D, ng/ml

271 ± 216

36.7–1390

Histological UIP diagnosis (%)

40 (22.3%)

 
  1. Data is presented as mean ± standard deviation. IPF, idiopathic pulmonary fibrosis; JRS, Japanese Respiratory Society; BMI, body mass index; N/F/C, never/former/current; GAP, gender–age–physiology; mMRC, modified Medical Research Council; PaO2, partial pressure of oxygen in arterial blood; FVC, forced vital capacity; DLco, diffusion capacity of the lungs for carbon monoxide; 6MWT, 6-min walk test; KL-6, Krebs von den Lungen-6; SP-D, surfactant protein-D; UIP, usual interstitial pneumonia