Table 4.5. Elimination of Patients From Initial Pool of Potentially Eligible Intervention and Control Group Patients, by Source of Elimination Health Care Systems for Tracking Colorectal Cancer Screening Tests Source of EliminationIntervention Group(10,063 Initially Eligible)Control Group(2,745 Initially Eligible)N%N%IneligibilityElectronic record3283.3602.2Chart audit730.7230.8SEA form1,34213.3——All ineligible1,74317.3833.0ExclusionOpted out3003.0——Undeliverable550.5——All excluded3553.5——Return to Document Current as of December 2010 Internet Citation: Table 4.5. Elimination of Patients From Initial Pool of Potentially Eligible Intervention and Control Group Patients, by Source of Elimination: Health Care Systems for Tracking Colorectal Cancer Screening Tests. December 2010. Agency for Healthcare Research and Quality, Rockville, MD. http://www.ahrq.gov/research/findings/final-reports/crcscreeningrpt/crcscreentab4-5.html