Table 1.

Reasons for exclusion from recruitment study population

NumberInitial sample (%)
Initial sample80,046100
Excluded*5,9077.3
    Missing mailing date2,7503.4
    Problem with address1,6862.1
    Not in catchment area1,3351.7
    Other1360.2
Final study population74,13992.6
  • * “Missing mailing date” includes subjects without verifiable introductory mailing due to incomplete records in tracking database; “Problem with address” includes P.O. box only, business address, group home, no address and unable to map; “other” includes duplicate records and persons ineligible for PLCO.