Table 6

Multivariate Predictors of IVUS Disease Burden (n = 654)

ParametersSelection = BackwardSelection = Stepwise
β Coeff. (95% CI)p Valueβ Coeff. (95% CI)p Value
Multivariate Predictors of IVUS Percent Plaque Volume
Age1.2 (−0.1 to 2.5)0.071.2 (−0.1 to 2.5)0.07
Male gender63.6 (36.7 to 90.5)<0.000163.6 (36.7 to 90.5)<0.0001
Non-white race43.0 (5.8 to 80.2)0.0243.0 (5.8 to 80.2)0.02
Current smoker29.3 (1.7 to 56.9)0.0429.3 (1.7 to 56.9)0.04
Diabetes56.1 (25.3 to 86.9)0.000456.1 (25.3 to 86.9)0.0004
Prior procedure73.1 (46.9 to 99.3)<0.000173.1 (46.9 to 99.3)<0.0001
Stroke89.1 (14.7 to 163.4)0.0289.1 (14.7 to 163.4)0.02
Multivariate Predictors of IVUS Normalized Total Atheroma Volume
Age1.8 (0.5 to 3.1)0.0061.8 (0.5 to 3.0)0.006
Male gender106.5 (79.2 to 133.8)<0.0001104.3 (76.9 to 131.7)<0.0001
Non-white race65.2 (27.9 to 102.5)0.000762.3 (24.9 to 99.7)0.001
BMI3.1 (1.0 to 5.1)0.0032.9 (0.9 to 5.0)0.005
Diabetes34.1 (2.8 to 65.4)0.0334.0 (2.8 to 65.2)0.03
Prior procedure26.6 (0.3 to 52.9)0.04826.7 (0.4 to 53.0)0.04
Diastolic BP0.9 (−0.3 to 2.1)0.12
Multivariate Predictors of IVUS Percent Abnormal Cross Sections
Male gender66.7 (39.5 to 93.9)<0.000169.3 (42.0 to 96.6)<0.0001
Diabetes40.6 (9.5 to 71.7)0.0138.3 (7.1 to 69.5)0.02
Prior procedure27.3 (0.7 to 53.9)0.0427.2 (0.6 to 53.8)0.045
Stroke65.5 (−10 to 141)0.0964.7 (−10.7 to 140)0.10
Non-white race29.6 (−8.2 to 67.4)0.13

Abbreviations as in Table 4.

  • Variables selected by the backward approach are based on a significance level α <0.10;

  • variables selected by the stepwise approach are based on a significance level α <0.15.