Table 2– Differences in measures of subclinical atherosclerosis in the carotid, peripheral and coronary vascular beds per unit change in lung function among smokers and never-smokers
FEV1FVCFEV1/FVC
Difference per 1-L increase (95% CI)p-valueDifference per 1-L increase (95% CI)p-valueDifference per 1% increase (95% CI)p-value
Smokers#
 IMT mm
  Internal carotid-0.060 (-0.115– -0.005)0.03-0.000 (-0.051– -0.050)0.99-0.006 (-0.009– -0.003)<0.001
  Common carotid-0.028 (-0.045– -0.012)<0.001-0.013 (-0.028–0.022)0.09-0.001 (-0.002– -0.000)0.007
 ABI0.012 (0.002–0.023)0.020.004 (-0.005–0.014)0.390.0008 (0.0002–0.0014)0.006
 Presence of CAC+1.01 (0.97–1.04)0.761.00 (0.97–1.03)0.961.001 (0.997–1.002)0.58
 Log Agatston score¶,§0.099 (-0.137–0.334)0.410.14 (-0.074–0.360)0.20-0.004 (-0.016–0.008)0.55
Never-smokersƒ
 IMT mm
  Internal carotid-0.053 (-0.105– -0.001)0.047-0.008 (-0.053–0.036)0.71-0.004 (-0.007– -0.002)0.002
  Common carotid-0.028 (-0.044– -0.013)<0.001-0.014 (-0.027–0.000)0.04-0.001 (-0.002– -0.000)0.01
 ABI0.013 (0.003–0.023)0.010.0066 (-0.002–0.015)0.130.0006 (0.0000–0.0011)0.045
 Presence of CAC+1.00 (0.97–1.03)0.920.99 (0.97–1.02)0.651.001 (0.999–1.003)0.40
 Log Agatston score¶,§0.020 (-0.197–0.237)0.860.020 (-0.163–0.203)0.82-0.001 (-0.012–0.010)0.83
  • Multivariate models were adjusted for age, sex, race/ethnicity, smoking status, pack-yrs, urine cotinine, educational attainment, diabetes mellitus, fasting plasma glucose, height, body mass index, hypertension, systolic and diastolic blood pressure, low- and high-density lipoprotein, statin medication, alcohol use, and C-reactive protein. FEV1: forced expiratory volume in 1 s; FVC: forced vital capacity; IMT: intima-media thickness; ABI: ankle-brachial index; CAC: coronary artery calcium. #: n=2,024; : multivariate mean difference; +: multivariate prevalence ratio; §: among participants with detectable CAC; ƒ: n=1,812.