- Arm 4: mailed FIT kit + entry in a 1/10 chance lottery to receive a gift card if kit is returned within two months (conditional lottery incentive) All 1,080 subjects will receive the mailed FIT kit. Subjects whose FIT results are not recorded in PennChart will receive a follow-up phone call via Interactive Voice Response (IVR) three weeks after the kit was mailed to the subject. Subjects whose FIT results are not recorded in PennChart will receive a follow-up mailed reminder six weeks after the kit was mailed to the subject. Subjects will receive follow-up regardless of the arm to which they are randomized.