Article Figures & Data
Figures
- Figure 1.
Age-incidence rates per 1,000 women screens for invasive breast cancer diagnosed at a subsequent screen within BreastScreen Victoria separately for (A) women on HRT and (B) women not on HRT at most recent screen. Fitted curve, cubic smoothing spline fit on the partial residual scale (y-axis); dashed lines, point-wise 95% confidence intervals.
- Figure 2.
Age-incidence rates per 1,000 women screens for DCIS diagnosed at a subsequent screen within BreastScreen Victoria separately for (A) women on HRT and (B) women not on HRT at most recent screen. Fitted curve, cubic smoothing spline fit on the partial residual scale (y-axis); dashed lines, point-wise 95% confidence intervals.
Tables
- Table 1.
Rate of diagnosis of breast cancer per 1,000 women screened by age group and first/subsequent screening attendance
Type of attendance Age group 40-49 50-69 70-74 ≥75 Total First attenders 93,402 312,139 29,895 18,340 453,776 Invasive breast cancer n 254 1,753 294 254 2,555 Rate per 1,000 women screened 2.7 5.62 9.83 13.85 DCIS n 86 414 62 28 590 Rate per 1,000 women screened 0.92 1.33 2.07 1.53 Subsequent attenders 27,661 506,117 87,545 24,699 646,022 Invasive breast cancer n 69 2062 478 127 2,736 Rate per 1,000 women screened 2.49 4.07 5.46 5.14 DCIS n 23 414 76 24 537 Rate per 1,000 women screened 0.83 0.82 0.87 0.97 Total 121,063 818,256 117,440 43,039 - Table 2.
Size (mm), proportion of grade III cancers, and nodal status by age and screening round for screen detected and interval invasive breast cancer
Type of attendance Age group 40-49 50-69 70-74 ≥75 P* Invasive cancer First screen Cancers (n) 245 1,711 290 242 Mean size (mm) 18.09 16.10 16.27 15.74 0.15 Grade (n) 254 1752 294 253 Grade III (%) 20.87 16.67 16.67 13.83 0.09 Nodal status (n) 254 1,753 294 254 Node negative (%) 69.29 74.22 76.19 83.46 Node positive (%) 30.71 25.78 23.81 16.54 <0.001 Subsequent screen Cancers (n) 66 2,040 469 125 Mean size (mm) 17.2 13.88 13.40 13.66 0.08 Grade (n) 69 2,061 478 127 Grade III (%) 20.29 18.10 15.06 13.39 0.05 Nodal status (n) 69 2,061 478 127 Node negative (%) 71.01 80.49 84.73 90.55 Node positive (%) 28.99 19.51 15.27 9.45 <0.001 Interval cancer Cancers (n) 112 625 59 24 Mean size (mm) 20.64 21.39 18.61 20.75 0.52 Grade (n) 106 605 55 22 Grade III (%) 49.06 38.18 30.91 45.45 0.06 Nodal status (n) 126 705 66 27 Node negative (%) 24.60 15.74 28.79 40.74 Node positive (%) 75.40 84.26 71.21 59.26 <0.001 ↵* Two-sided P's from a nonparametric test for trend. n, nonmissing size, nonmissing grade, and nonmissing nodes.
- Table 3.
Size (mm) of invasive cancers diagnosed within BreastScreen Victoria characterized by age and time since previous negative screen
Time since previous negative screen (mo) Age group 40-49 50-69 70-74 ≥75 Total <27 No. screened 6,245 204,092 41,745 16,580 Invasive cancers Cancers (n) 26 1,751 414 82 2,273 Mean size 16.97 13.66 13.35 12.71 27-36 No. screened 4,124 24,897 4,165 3,000 Invasive cancers Cancers (n) 24 173 36 17 250 Mean size 17.25 14.17 13.08 12.41 ≥37 No. screened 4,493 15,503 1,541 1,986 Invasive cancers Cancers (n) 16 116 19 26 177 Mean size 17.51 16.91 15.21 17.46 P* 0.7 0.005 0.6 0.08 ↵* Two-sided P's from a regression of log size and time since previous negative screen for each age group.
Volume 13, Issue 10
