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Table 1 Characteristics of the study population

From: Hormone replacement therapy use and plasma levels of sex hormones in the Norwegian Women and Cancer Postgenome Cohort – a cross-sectional analysis

  Postmenopausal* Pre/perimenopausal* Total
  N Mean 95% CI N Mean 95% CI N Mean 95% CI
Age (years) 331 55.8 (55.4–56.2) 94 50.1 (49.6–50.5) 425 54.5 (54.1–54.9)
Years since menopause 247 8.1 (7.4–8.2) - - - - - -
BMI (kg/m2) 331 25.6 (25.1–26.0) 93 25.2 (24.2–26.1) 424 25.5 (25.1–25.9)
  1. * Defined by the combined classification based on both questionnaires and hormone levels (Fig. 2 level c)