Table 2 RR, RII and age-adjusted mortality rates for breast cancer among all women
1968–1974 | 1975–1981 | 1982–1988 | 1990–1996 | |||||
|---|---|---|---|---|---|---|---|---|
Period | N a | RR (95% CI) | N | RR (95% CI) | N | RR (95% CI) | N | RR (95% CI) |
Incomplete elementary education | 127 | 0.3 (0.2–0.5) | 127 | 0.8 (0.5–1.3) | 159 | 1.0 (0.6–1.5) | 151 | 1.1 (0.8–1.5) |
General elementary education | 84 | 0.4 (0.3–0.6) | 140 | 1.3 (0.8–2.1) | 99 | 0.9 (0.6–1.4) | 152 | 1.0 (0.7–1.3) |
Vocational education | 26 | 0.5 (0.3–0.8) | 38 | 1.0 (0.6–1.7) | 77 | 1.6 (1.0–2.5) | 88 | 1.0 (0.7–1.3) |
High school and higher education | 34 | 1 | 18 | 1 | 26 | 1 | 62 | 1 |
RII (95% CI) | 271 | 0.43 (0.27–0.68) | 323 | 0.61 (0.40–0.93) | 361 | 0.68 (0.46–1.01) | 453 | 1.17 (0.82–1.68) |
Age-adjusted mortality rateb | 38 | 42 | 46 | 54 |
