TABLE 1

Baseline characteristics of participants in AGES-Reykjavik and COPDGene stratified by interstitial lung abnormality (ILA) status and race#

AGES-Reykjavikp-valueCOPDGene (non-Hispanic, white)p-valueCOPDGene (African-American)p-value
No ILAILANo ILAILANo ILAILA
Subjects n320937736674851728223
Age years76±578±6<0.000161±964±10<0.000154±755±80.003
Females1905 (59)171 (45)<0.00011752 (48)219 (45)0.29705 (41)126 (57)<0.0001
Body mass index27±427±50.5029±629±60.2529±729±70.33
Pack-years2# (0, 25)20# (0, 50)<0.000140 (29, 56)45 (34, 63)<0.000134 (22, 46)35 (24, 47)0.49
Current smokers373 (12)69 (18)0.00031402 (38)2546 (53)<0.00011393 (81)183 (82)0.65
History of COPD1474 (40)167 (35)0.02381 (22)54 (25)0.44
Percentage of the lung less than -950 Hounsfield units3 (0.9, 9)1.4 (0.5, 4.8)<0.00011.1 (0.4, 3.3)0.7 (0.2, 2.4)<0.0001

Data are presented as mean±sd, n (%) and median (interquartile range), unless otherwise stated. #: Includes cigarette and cigar smoking. AGES: Age Gene/Environment Susceptibility; COPD: chronic obstructive pulmonary disease.