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. 2013 Aug 1;2013:827696. doi: 10.1155/2013/827696

Table 1.

Guidelines and criteria for determining cancer screening adequacy.

Age of eligibility Screening adequate if
No. tests obtained Within (yrs)*
Pap 21 2 T − 3
Mammography 40 2 T − 2
Colonoscopy 50 1 T − 10

*T is the year of enrolment or age 70, 75, and 75 for Pap tests, mammograms, and colonoscopies, respectively. Screening was deemed adequate if at least no. tests were obtained in a specified time interval prior to enrolment [14].