From: Incidence of breast cancer in Chinese women exposed to the 1959–1961 great Chinese famine
All subjects (N = 59,060) | Birth year | |||
---|---|---|---|---|
1955–1958 (N = 25,836) | 1959–1962 (N = 17,772) | 1963–1966 (N = 15,452) | ||
Cancer in situ | ||||
Person-years | 302,019 | 136,574 | 88,645 | 76,800 |
No. of cases | 43 | 18 | 17 | 8 |
Incidence (95%CI) | 14.2 (10.6, 19.2) | 13.2 (8.3, 20.9) | 19.2 (11.9, 30.8) | 10.4 (5.2, 20.8) |
Adjusted HR (95%CI) | 1.00 | 1.06 (0.73, 1.51) | 0.95 (0.53, 1.71) | |
Invasive cancer | ||||
Person-years | 302,129 | 136,620 | 88,691 | 76,817 |
No. of cases | 330 | 150 | 102 | 78 |
Incidence (95%CI) | 109.2 (98.0, 121.7) | 109.8 (93.6, 128.8) | 115.0 (94.7, 139.6) | 101.5 (81.3, 126.8) |
Adjusted HR (95%CI) | 1.00 | 1.85 (0.69, 1.98) | 1.36 (0.25, 7.34) | |
All breast cancer | ||||
Person-years | 302,019 | 136,574 | 88,645 | 76,800 |
No. of cases | 373 | 168 | 119 | 86 |
Incidence (95%CI) | 123.5 (111.6, 136.7) | 123.0 (105.7, 143.1) | 134.2 (112.2, 160.7) | 111.9 (90.6, 138.3) |
Adjusted HR (95%CI) | 1.00 | 1.13 (0.80, 1.58) | 0.98 (0.57, 1.73) |