| BC diagnosis | Angiosarcoma | Other sarcoma | ||||||
|---|---|---|---|---|---|---|---|---|
| Observed | Expected | Person‐years | SIR (95% CI) | Observed | Expected | Person‐years | SIR (95% CI) | |
| 1950‐1954 | 0 | 0.02 | 11688.5 | 0 (0‐Inf) | 1 | 1.30 | 11688.5 | 0.77 (0.11‐5.44) |
| 1955‐1959 | 1 | 0.08 | 31951.8 | 13.12 (1.85‐93.14) | 1 | 3.54 | 31951.8 | 0.28 (0.04‐2) |
| 1960‐1964 | 0 | 0.12 | 40024.2 | 0 (0‐Inf) | 8 | 4.72 | 40024.2 | 1.69 (0.85‐3.39) |
| 1965‐1969 | 1 | 0.19 | 51755.4 | 5.15 (0.73‐36.57) | 11 | 6.50 | 51755.4 | 1.69 (0.94‐3.06) |
| 1970‐1974 | 0 | 0.27 | 69831.6 | 0 (0‐Inf) | 18 | 9.17 | 69831.6 | 1.96 (1.24‐3.11) |
| 1975‐1979 | 2 | 0.34 | 87673.0 | 5.81 (1.45‐23.24) | 28 | 11.99 | 87673.0 | 2.34 (1.61‐3.38) |
| 1980‐1984 | 4 | 0.51 | 110413.6 | 7.82 (2.94‐20.85) | 22 | 15.85 | 110413.6 | 1.39 (0.91‐2.11) |
| 1985‐1989 | 4 | 0.81 | 146975.6 | 4.92 (1.85‐13.11) | 39 | 21.88 | 146975.6 | 1.78 (1.3‐2.44) |
| 1990‐1994 | 11 | 0.99 | 168322.8 | 11.12 (6.16‐20.07) | 30 | 25.09 | 168322.8 | 1.2 (0.84‐1.71) |
| 1995‐1999 | 22 | 1.11 | 184461.7 | 19.81 (13.04‐30.08) | 42 | 27.41 | 184461.7 | 1.53 (1.13‐2.07) |
| 2000‐2004 | 16 | 1.11 | 173883.8 | 14.4 (8.82‐23.51) | 42 | 25.99 | 173883.8 | 1.62 (1.19‐2.19) |
| 2005‐2009 | 12 | 0.90 | 128567.1 | 13.3 (7.55‐23.42) | 29 | 19.21 | 128567.1 | 1.51 (1.05‐2.17) |
| 2010‐2015 | 1 | 0.39 | 52396.9 | 2.59 (0.36‐18.37) | 10 | 8.22 | 52396.9 | 1.22 (0.65‐2.26) |
BC, breast cancer; CI, confidence interval; Inf, infinity; SIR, standardized incidence ratio.