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Although NHSCR notified us of 720 cases, the pathology review showed that only 694 of these were actually malignant.

Other sources informed us of 46 cases that NHSCR had not told us about.

So our first estimate of the COMPLETENESS OF ASCERTAINMENT of cancers from NHSCR was 94%.

Do you think the completeness of ascertainment was different in different age groups?