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Table 3 Proportion (%) of women with mixed/dense mammographic density by hormone use (HT), screening age, period, and birth cohort

From: Mammographic density in birth cohorts of Danish women: a longitudinal study

Never HT users

Period 1994–95 (n=26916)

Period 1996–97 (n=28065)

Period 1998–99 (n=27306)

Period 2000–01 (n=27315)

Total

Age (years)

     

50-51, n=11858

73 (72–73)

74 (74–75)

79 (79–80)

83 (82–85)

77 (77–78)

52-53, n=10006

66 (65–66)

62 (61–63)

72 (71–73)

78 (77–80)

70 (69–71)

54-55, n=8378

60 (59–61)

56 (55–57)

64 (63–65)

73 (71–74)

64 (63–65)

56-57, n=7599

55 (54–56)

52 (51–53)

59 (57–59)

67 (65–69)

58 (58–59)

58-59, n=7298

53 (52–54)

52 (51–53)

56 (55–57)

62 (60–64)

56 (55–57)

60-61, n=7468

50 (49–51)

47 (46–48)

53 (52–54)

60 (58–62)

53 (52–54)

62-63, n=7422

45 (44–46)

45 (44–46)

51 (50–52)

60 (58–62)

50 (49–51)

64-65, n=7556

45 (44–46)

41 (40–42)

50 (49–51)

57 (55–59)

48 (47–49)

66-67, n=7475

45 (44–46)

42 (41–43)

43 (42–44)

55 (53–57)

46 (45–47)

68-69, n=7227

43 (42–44)

41 (40–42)

45 (44–46)

50 (48–52)

44 (43–45)

Total

54 (54–55)

53 (53–54)

59 (59–60)

66 (66–67)

 

Current HT users

Period 1994– 95 (n=8171)

Period 1996– 97 (n=9040)

Period 1998– 99 (n=9464)

Period 2000– 01 (n=9669)

Total

Age (years)

     

50-51, n=3649

76 (75–77)

80 (79–81)

83 (82–84)

88 (86–90)

81 (80–83)

52-53, n=4025

76 (75–77)

75 (74–76)

82 (81–83)

84 (82–86)

79 (78–80)

54-55, n=3788

73 (72–75)

73 (72–74)

78 (77–79)

85 (83–87)

78 (77–79)

56-57, n=3462

71 (70–73)

72 (71–73)

76 (75–77)

82 (80–84)

75 (74–77)

58-59, n=2986

72 (71–73)

66 (65–67)

76 (75–78)

81 (79–84)

74 (73–76)

60-61, n=2511

73 (71–74)

70 (69–72)

72 (71–73)

83 (81–86)

75 (73–76)

62-63, n=2047

69 (68–71)

71 (69–72)

75 (74–77)

78 (76–81)

74 (72–75)

64-65, n=1631

68 (66–69)

63 (61–65)

74 (73–76)

80 (77–83)

72 (70–74)

66-67, n=1414

69 (67–71)

69 (68–70)

71 (69–73)

82 (78–85)

73 (71–75)

68-69, n=1162

66 (64–69)

67 (65–69)

72 (70–74)

76 (72–80)

70 (68–73)

Total

73 (72–73)

72 (71–73)

77 (76–78)

83 (82–83)

 
  1. Mammography screening program of Funen (1994–2001), Denmark.