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Estimated geometric means of selected lipoprotein subclasses by E2 quintiles. aQ1, E2 <15.6 pg/ml; Q2, 15.6 pg/ml ≤ E2 < 25.7 pg/ml; Q3, 25.7 pg/ml ≤ E2 < 42.05 pg/ml; Q4, 42.05 pg/ml ≤ E2 < 98.05 pg/ml; Q5, E2 ≥98.05 pg/ml. bP for comparisons between women with E2 ≥25.7 pg/ml and women with E2 <25.7 pg/ml.
