From: Impacts of the Finnish service screening programme on breast cancer rates
Age group (years) | ||||||||
---|---|---|---|---|---|---|---|---|
40–44 | 45–49 | 50–54 | 55–59 | 60–64 | 65–69 | 40–69 | 50–69 | |
Woman-years at risk | 943,300 | 992,500 | 1,034,400 | 788,500 | 680,900 | 614,900 | 5,054,500 | 3,118,700 |
Incidence, any | ||||||||
Observed with screening | 0.108 | 0.217 | 0.279 | 0.290 | 0.285 | 0.294 | 0.239 | 0.286 |
Expected without screening1 | 0.113 | 0.211 | 0.236 | 0.261 | 0.288 | 0.309 | 0.237 | 0.262 |
Excess relative risk (in %)1 | -4 | 3 | 18* | 11* | -1 | -5 | 1 | 9* |
Incidence, localised at diagnosis | ||||||||
Observed with screening | 0.054 | 0.119 | 0.168 | 0.182 | 0.182 | 0.181 | 0.143 | 0.177 |
Expected without screening1 | 0.045 | 0.095 | 0.128 | 0.131 | 0.158 | 0.173 | 0.116 | 0.141 |
Excess relative risk (in %)1 | 20* | 26* | 56* | 39* | 15* | 5 | 23* | 26* |
Incidence, non-localised at diagnosis | ||||||||
Observed with screening | 0.056 | 0.093 | 0.098 | 0.092 | 0.092 | 0.104 | 0.088 | 0.097 |
Expected without screening1 | 0.071 | 0.100 | 0.105 | 0.112 | 0.117 | 0.124 | 0.105 | 0.106 |
Excess relative risk (in %)1 | -21* | -7 | -6 | -18* | -21* | -16* | -16* | -9* |
Mortality | ||||||||
Observed with screening | 0.017 | 0.028 | 0.044 | 0.048 | 0.056 | 0.067 | 0.041 | 0.052 |
Expected1 without screening | 0.012 | 0.022 | 0.035 | 0.046 | 0.057 | 0.064 | 0.037 | 0.051 |
Excess relative risk1 (in %) | 42* | 29* | 24 | 5 | -2 | 4 | 10 | 3 |