Table 2

Observed, predicted, screen-detected breast cancer cases and observed corrected-for-lead-time cases, by age group
Age group (years)
 O
 P
 O/P
 Screen-detected
 Oc
 Oc/P
 95% CI, Oc/P
50–54
 1,957
 1,328.1
 147.4
 749
 1,426
 107.4
 102–113
55–59
 2,017
 1,418.8
 142.2
 950
 1,410
 99.4
 94–105
60–64
 2,192
 1,555.8
 140.9
 995
 1,566
 100.7
 96–106
65–69
 2,340
 1,605.8
 145.7
 1,031
 1,697
 105.7
 101–111
70–74
 1,788
 1,646.9
 108.6
 127
 1,807
 109.7
 105–115
50–74
 10,294
 7,555.3
 136.2
 3,852
 7,906
 104.6
 102–107

O, observed; P, predicted; Oc, observed corrected for lead time; CI, confidence interval.

Paci et al. Breast Cancer Research 2006 8:R68   doi:10.1186/bcr1625

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