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. 2009 Feb;139(2):250–256. doi: 10.3945/jn.108.098954

TABLE 4.

Independent predictors of spine BMD by forward selection multilevel multivariate regression analyses (n = 242)

Models1
P-values (standardized estimates, β)
Variables 1 2 3 4 5 Estradiol
Energy intake, kJ/d 0.15 (−0.18) 0.15 (−0.21) 0.15 (−0.21) 0.11 (−0.18) 0.09 (−0.18) 0.1 (−0.21)
Saturated fatty acids, g/d 0.01 (0.33) 0.01 (0.32) 0.01 (0.32) 0.11 (0.18) 0.07 (0.20) 0.09 (0.23)
Serum triglycerides, mmol/L NE2 0.02 (−0.14) 0.02 (−0.14) 0.001 (−0.19) 0.01 (−0.15) 0.005 (−0.18)
Lean body mass, kg NE NE NE <0.0001 (0.47) <0.0001 (0.42) <0.0001 (0.42)
African-American race NE NE NE NE 0.01 (0.15) 0.03 (0.14)
Plasma estradiol,3pmol/L NE NE NE NE NE 0.85 (0.01)
Model R2 0.04 0.06 0.06 0.26 0.28 0.27
1

Model 1(fatty acids) included energy intake, trans-fatty acids, SFA, MUFA, (n-3) PUFA, (n-6) PUFA (linoleic acid). Model 2 (blood chemistry) included predictors from model 1 plus blood chemistry variables, calcium, total protein, and triglycerides. Model 3 (steroid hormones) included predictors from model 2 plus testosterone and progesterone. Model 4 (anthropometrics) included predictors from models 1 and 2 plus anthropometric variables, body weight, BMI, lean body mass, and fat body mass. Model 5 (ethnicity): African-American and Hispanic ethnicity were entered in the model with Caucasian as the reference ethnicity. Estradiol model: predictor variables in model 5 were adjusted for estradiol.

2

NE, Not entered.

3

n = 210.