Table 4 Sensitivity analysis of age-specific incidence rates of breast cancer by birth year in Chinese women
From: Incidence of breast cancer in Chinese women exposed to the 1959–1961 great Chinese famine
Incidence (95%CI) | <50 years old | 50~52 years old | ≥ 53 years old | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
PYs | No. of cases | Incidence (95%CI) | PYs | No. of cases | Incidence (95%CI) | PYs | No. of cases | Incidence (95%CI) | ||
Cancer in situ | ||||||||||
By birth year | ||||||||||
1955–1959 | 13.6 (8.9, 20.6) | 1457 | 0 | 0 | 25,904 | 3 | 11.6 (3.7, 35.9) | 134,518 | 19 | 14.1 (9.0, 22.1) |
1960–1962 | 20.5 (11.9, 35.3) | 16,109 | 5 | 31.0 (12.9, 74.5) | 33,330 | 4 | 12.0 (4.5, 31.9) | 13,900 | 4 | 28.8 (10.8, 76.7) |
1963–1966 | 10.4 (5.2, 20.8) | 62,302 | 6 | 9.6 (4.3, 21.4) | 14,497 | 2 | 13.8 (3.4, 55.15) | – | – | – |
Overall | 14.2 (10.6, 19.2) | 79,870 | 11 | 13.8 (7.6, 24.9) | 73,731 | 9 | 12.2 (6.4, 23.4) | 148,418 | 23 | 15.5 (10.3, 23.3) |
Invasive cancer | ||||||||||
By birth year | ||||||||||
1955–1959 | 110.5 (95.5, 127.9) | 1457 | 1 | 68.6 (9.7, 487.1) | 25,906 | 29 | 111.9 (77.8, 161.1) | 134,564 | 149 | 110.7 (94.3, 130.0) |
1960–1962 | 115.2 (91.6, 144.9) | 16,114 | 22 | 136.5 (89.9, 207.3) | 33,351 | 42 | 125.9 (93.1, 170.4) | 13,918 | 9 | |
1963–1966 | 101.5 (81.3, 126.8) | 62,314 | 66 | 105.9 (83.2, 134.8) | 14,503 | 12 | 82.7 (46.9, 145.7) | – | – | – |
Overall | 109.2 (98.0, 121.7) | 79,885 | 89 | 111.4 (90.5, 137.3) | 73,759 | 83 | 112.5 (90.7, 139.5) | 148,483 | 158 | 106.4 (91.0, 124.4) |
All breast cancer | ||||||||||
By birth year | ||||||||||
1955–1959 | 124.2 (108.1, 142.6) | 1457 | 1 | 68.6 (9.7, 487.1) | 25,903 | 32 | 123.5 (87.4, 174.6) | 134,518 | 168 | 124.9 (107.4, 145.3) |
1960–1962 | 135.8 (109.9, 167.7) | 16,109 | 27 | 167.6 (114.9, 244.4) | 33,330 | 46 | 138.0 (103.4, 184.3) | 13,900 | 13 | 93.5 (54.3, 161.1) |
1963–1966 | 111.9 (90.6, 138.3) | 62,301 | 72 | 115.6 (91.7, 145.6) | 14,497 | 14 | 96.6 (51.8, 163.0) | – | – | – |
Overall | 123.5 (111.6, 136.7) | 79,870 | 100 | 125.2 (102.9, 152.3) | 73,731 | 92 | 124.8 (101.7, 153.1) | 148,418 | 181 | 121.9 (105.4, 141.1) |