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) |