Association between serum estradiol level and appendicular lean mass index in middle-aged postmenopausal women

Table 3 Association between serum estradiol level (pg/mL) and appendicular lean mass index (kg/m²), stratified by body mass index and race

	Model 1 β (95%CI)	Model 2 β (95%CI)	Model 3 β (95%CI)
Stratified by BMI
BMI (< 25 kg/m2)	0.002 (-0.000, 0.004)	0.001 (-0.001, 0.004)	0.002 (0.000, 0.003)a
BMI (25-29.9 kg/m2)	0.003 (0.001, 0.005)b	0.002 (0.000, 0.004)a	0.001 (-0.001, 0.003)
BMI (≥ 30 kg/m2)	0.006 (0.004, 0.009)c	0.005 (0.002, 0.008)a	0.001 (-0.001, 0.003)
Stratified by race
Non-Hispanic White	0.003 (-0.000, 0.007)	0.002 (-0.002, 0.006)	0.002 (-0.000, 0.004)
Non-Hispanic Black	0.004 (0.000, 0.007)a	0.004 (-0.000, 0.007)	0.001 (-0.000, 0.003)
Mexican American	0.003 (-0.002, 0.008)	0.003 (-0.002, 0.008)	-0.003 (-0.005, 0.000)
Other race	0.015 (0.009, 0.022)c	0.013 (0.007, 0.020)c	0.002 (-0.001, 0.006)

^aP < 0.05.

^bP < 0.01.

^cP < 0.001.

Model 1: No covariates were adjusted. Model 2: Age, and race were adjusted. Model 3: Age, race, educational level, body mass index, ratio of family income to poverty, moderate activities, total protein, blood urea nitrogen, serum uric acid, and serum calcium were adjusted. BMI: Body mass index.