TABLE 2

Summary of models for SI, AIR, and DI

SI* (model R2 = 43.5)
AIR* (model R2 = 11.6)
DI* (model R2 = 26.3)
β ± SEPPercent change in R2β ± SEPPercent change in R2β ± SEPPercent change in R2
Age
 Linear0.0006 ± 0.0011<0.000110.6−0.2303 ± 0.0315<0.000141.6−0.2101 ± 0.0439<0.000116.5
 Quadratic−0.0004 ± 0.00010.0013 ± 0.0012−0.0071 ± 0.0019
Sex (F vs. M)0.0150 ± 0.02930.58390.05−2.4395 ± 0.88830.00186.1−1.8651 ± 1.14060.08330.8
Ethnicity/clinic
 African American (Los Angeles)
 Hispanic (San Antonio)0.2052 ± 0.0366<0.00015.7−5.3888 ± 1.0895<0.000113.8−1.2041 ± 1.30760.01502.2
 Hispanic (San Luis Valley)0.2181 ± 0.0387−3.0265 ± 1.15752.4949 ± 1.4139
BMI (kg/m2)−0.0134 ± 0.00430.00022.2−0.0657 ± 0.09680.43860.4−0.5349 ± 0.1507<0.00014.0
Log SAT (cm2)−0.1996 ± 0.05265.4969 ± 1.1613<0.000116.31.5534 ± 1.8960
Log VAT (cm2)−0.3456 ± 0.033327.00.5247 ± 0.93010.52710.3−8.7357 ± 1.220216.4
SAT by VAT interaction−0.1334 ± 0.0278<0.0001−3.4585 ± 0.98740.0009
  • *

    * SI was natural log, and AIR and DI were square root-transformed (retaining sign).

  • P values not computed for main effects when interaction term is included in the model.

  • The percent change in R2 associated with dropping both fat measures and their interaction. The percent change in R2 for dropping the interaction term only was 3.7 for SI and 2.9 for DI. The percent change in R2 is relative to the overall R2.