Fig. 1From: Association between serum estradiol level, sex hormone binding globulin level, and bone mineral density in middle-aged postmenopausal womenThe associations between serum estradiol level and lumbar bone mineral density. a Each black point represents a sample. b Solid red line represents the smooth curve fit between variables. Blue bands represent the 95% of confidence interval from the fit. Adjusted for age, race, educational level, body mass index, ratio of family income to poverty, moderate activities, smoked at least 100 cigarettes in life, had at least 12 alcohol drinks in a year, blood urea nitrogen, serum uric acid, serum phosphorus, and serum calciumBack to article page