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Table 2 Pre- and post-menopausal breast measures and changes in breast measures over menopause (n = 591)

From: The effect of weight change on changes in breast density measures over menopause in a breast cancer screening cohort

 

Median (IQR)

 

Premenopause at baseline

Postmenopause at follow-up

Median change over menopausea

Breast density, %

44.6 (27.6; 59.1)

33.6 (16.5; 52.4)

−6.8 (−15.6; 0.5)

Dense area, cm2

42.7 (30.4; 57.5)

26.8 (14.5; 37.3)

−12.4 (−25.1; −4.1)

Nondense area, cm2

57.3 (36.0; 88.5)

65.4 (34.0; 94.2)

0.3 (−13.2; 14.8)

Breast area, cm2

105.3 (84.2; 133.7)

94.6 (68.0; 120.1)

−9.6 (−26.1; 2.1)

Weightb, kg

67.0 (61.0; 73.0)

68.0 (62.0; 75.0)

1.0 (−1.0; 3.5)

  1. IQR interquartile range
  2. aMedian change over menopause is determined by subtracting the pre- from the post-menopausal measures for each woman and then determining the median
  3. bInformation about postmenopausal weight is acquired from the follow-up questionnaire (self-reported). Weight change is the change in weight between the weight reported in the follow-up questionnaire and at baseline
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Breast Cancer Research

ISSN: 1465-542X

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