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Table 1 Baseline demographics of participants (n = 150)

From: Validation of the IPF-specific version of St. George’s Respiratory Questionnaire

Characteristics Value
Male (%) 122 (81.3%)
Age, years ± SD 72.9 ± 6.2
Smoking status
 Never (%) 40 (26.6%)
 Former (%) 101 (67.3%)
 Current (%) 9 (6.0%)
Time since diagnosis, years (interquartile range) 0.5 (0.0–9.2)
 < 1 month 0.0 (0.0–0.02)
 1–12 months 0.5 (0.3–0.8)
 > 12 months 2.8 (1.8–4.0)
FVC, % predicted ± SD 87.2 ± 23.1
DLCO, % predicted ± SD 48.4 ± 14.1
6MWD, m ± SD 450.3 ± 112.5
Long-term oxygen therapy (%) 19 (12.7%)
  1. Values are presented as n (%), mean ± standard deviation (SD) or mean with interquartile range. FVC: Forced vital capacity; DLCO: Diffusing capacity of the lung for carbon monoxide; 6MWD: distance walked during the 6-min walk test. The same patients were used in a validation study of K-BILD (manuscript submitted)