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Table 1 Clinical and serological features of 137 patients with rheumatoid arthritis

From: Diagnostic accuracy of a velcro sound detector (VECTOR) for interstitial lung disease in rheumatoid arthritis patients: the InSPIRAtE validation study (INterStitial pneumonia in rheumatoid ArThritis with an electronic device)

 

Total

ILD -

ILD +

p

Nr.

137

78

59

 

Smoke (%)

37.2

39.7

34

ns

Sex M/F

1/1.83

1/2.54

1/1.31

ns

ACPA (%)

77.2

77.1

77.2

ns

Rheumatoid factor (%)

78.6

81.1

75.4

ns

Forced vital capacity (% ± SD)

91.8 ± 22.3

93.1 ± 21.3

90.3 ± 23.7

ns

DLCO (% ± SD)

59.9 ± 18.0

65.7 ± 20.4

54.4 ± 13.6

0.015

Disease duration (years±SD)

11.1 ± 9.5

10.4 ± 7.8

12.1 ± 11.3

ns

Mean age at disease onset (years±SD)

56.1 ± 12.9

55.3 ± 12.3

57.0 ± 13.6

ns

Mean age at study entry (years±SD)

67.9 ± 9.9

66.5 ± 10.3

69.8 ± 9.1

0.049

  1. ILD Interstitial lung disease, M Males, F Females, ACPA Anti-citrullinated peptide antibodies, DLCO Diffusion lung capacity of CO, SD Standard deviation