Table 1. Crude Incidence Rates for Breast Cancer Stratified by Early Cancer and Stage.
| Survey | Total No. of cases | Early breast cancer, No. (%) | Stage I | Stage II | Stages III/IV | |||
|---|---|---|---|---|---|---|---|---|
| No. (%) | Crude incidence rate | No. (%) | Crude incidence rate | No. (%) | Crude incidence rate | |||
| Victoria 1986a | 799 | 671 (84) | 436 (55) | 41.5 | 235 (29) | 22.4 | 128 (16) | 12.2 |
| Victoria 1990a | NA | 856 (NA) | 471 (55)b | 42.8 | 265 (31)b | 24.1 | NA | NA |
| Victoria 1995a | 1316 | 1158 (88) | 776 (59) | 67.5 | 382 (29) | 33.2 | 158 (12) | 13.7 |
| Victoria 1999a | NA | 1181 (100) | 744 (63) | 62.0 | 437 (37) | 36.4 | NA | NA |
| Staging project 2006c | 2974 | 2500 (84) | 1407 (47) | 54.2 | 1093 (37) | 42.2 | 474 (16) | 18.3 |
| Staging project 2007c | 2990 | 2466 (82) | 1343 (45) | 50.7 | 1123 (38) | 42.8 | 524 (18) | 19.2 |
| Victoria 2010c | 3499 | 2904 (83) | 1645 (47) | 58.7 | 1260 (36) | 45.0 | 595 (17) | 21.3 |
| Victoria 2013c | 4075 | 3382 (83) | 1915 (47) | 66.0 | 1467 (36) | 50.6 | 693 (17) | 23.9 |
Abbreviation: NA, not available.
b
The 1990 proportions are those available for early breast cancer and are not corrected for missing data because the total registered was not reported.