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Table 1 Numerator (n), crude cumulative incidences (CCI) and age standardized cumulative incidences (ACI) per 100,000 insured persons for breast, prostate and colorectal cancer in 2013

From: The impact of the lookback period and definition of confirmatory events on the identification of incident cancer cases in administrative data

Algorithm Description Breast cancer (women)
Denominator: n = 4,093,251
Prostate cancer (men)
Denominator: n = 2,670,298
Colorectal cancer (overall)
Denominator: n = 6,763,549
Num. (n) CCI per 100,000 ACI per 100,000 Num. (n) CCI per 100,000 ACI per 100,000 Num. (n) CCI per 100,000 ACI per 100,000
1. L1-C1 Baseline algorithm, lookback 1 year, confirmation 1 quarter 10,312 251.9 138.7 6200 232.2 103.6 6513 96.3 42.1
2. L2-C1 Lookback 2 years 9826 240.1 133.5 5916 221.5 99.4 6172 91.3 40.1
3. L3-C1 Lookback 3 years 9646 235.7 131.6 5790 216.8 97.6 6011 88.9 39.2
4. L4-C1 Lookback 4 years 9548 233.3 130.6 5730 214.6 96.6 5940 87.8 38.8
5. L5-C1 Lookback 5 years 9478 231.6 129.8 5690 213.1 96.1 5887 87.0 38.5
6. L6-C1 Lookback 6 years 9439 230.6 129.3 5646 211.4 95.4 5857 86.6 38.3
7. L7-C1 Lookback 7 years 9409 229.9 129.0 5623 210.6 95.1 5842 86.4 38.3
8. L1-C4 Confirmation 4 quarters 11,199 273.6 151.3 6884 257.8 114.9 7213 106.6 46.8
9. L7-C4 Lookback 7 years, confirmation 4 quarters 9866 241.0 136.0 6077 227.6 102.9 6335 93.7 41.6
10. L1-C0 No confirmatory event required 13,810 337.4 195.5 8378 313.7 142.3 9686 143.2 67.2
11. L7-C0 Lookback 7 years, no confirmatory event required 11,728 286.5 169.7 7224 270.5 124.5 8382 123.9 59.1
12. L1-C1-ed Exclusion of death as confirmatory event 10,135 247.6 137.2 6032 225.9 101.4 5994 88.6 39.5
13. L7-C1-ed Lookback 7 years, exclusion of death as confirmatory event 9261 226.3 127.7 5478 205.1 93.2 5360 79.2 35.8
14. L1-C4-su Confirmation 4 quarters, surgery as required confirmatory event 8162 199.4 114.9 N/A N/A N/A 5645 83.5 37.1
15. L7-C4-su Lookback 7 years, confirmation 4 quarters, surgery as required confirmatory event 8015 195.8 113.1 N/A N/A N/A 5341 79.0 35.2
  1. Main analysis: All insured persons with a minimum of 7 years of continuous insurance on 01 January 2013
  2. Specification of the algorithms: L1 to L7 length of lookback period, C0, C1 and C4 length of confirmation period, ed exclusion of death as confirmatory event, su surgery as required confirmatory event