Table 1

Baseline characteristics of participants

ParticipantsNo ILA (n=3216, 61%)Indeterminate ILA status (n=1726, 32%)ILA (n=378, 7%)P value
Mean age (95% CI)75.9 (75.7 to 76.1)77.4 (77.1 to 77.6)77.8 (77.2 to 78.3)3.4×10−9
Women, n (%)1910 (59)962 (56)172 (46)3.1×10−7
Mean BMI (95% CI)27.2 (27.0 to 27.3)26.8 (26.6 to 27.0)27.1 (26.6 to 27.5)0.60
History of smoking, n (%)1750 (54)1021 (59)271 (72)1.1×10−10
Median pack-years (IQR)0 (0–16)2.5 (0–22.5)11.0 (0–28.5)3.5×10−16
Current smoker, n (%)374 (12)205 (12)69 (18)0.0003
Activities of daily living
  Independence in all five ADLs, n (%)2422 (75)1191 (69)251 (66)
  Independence in four ADLs, n (%)434 (13)253 (15)65 (17)
  Independence in three or less ADLs, n (%)336 (10)259 (15)54 (14)
Health status
  Health described as ‘excellent’, n (%)742 (23)368 (21)70 (19)
  Health described as ‘very good’, n (%)480 (15)225 (13)38 (10)
  Health described as ‘good’, n (%)1010 (31)512 (30)109 (29)
  Health described as ‘fair’, n (%)813 (25)503 (29)128 (34)
  Health described as ‘poor’, n (%)166 (5)114 (7)31 (8)
Physical activity in the past 12 months
  No or rare physical activity, n (%)1914 (60)1115 (65)258 (68)
  Weekly physical activity, n (%)1263 (39)580 (34)108 (29)
  • P values comparing participants without ILA and participants with ILA.

  • ADLs, activities of daily living; BMI, body mass index; ILA, interstitial lung abnormalities.