Table 2.
Proportions of Participants Completing CRC Screening Tests Within 6 Months
| No. (%) of Participants | Adjusted for Age, Sex, Race, and Prior Screening | |||||
|---|---|---|---|---|---|---|
| Mail Only (n = 284) | Mail and Monetary (n = 270)a | Mail and Lottery (n = 284)b | Difference for Mail and Monetary vs Mail Only (95% CI) | Difference for Mail and Lottery vs Mail Only (95% CI) | Global P Value | |
| Any CRC testc | 203 (71.5) | 207 (76.7) | 212 (74.6) | 5.7 (−1.3 to 12.8) | 4.4 (−2.5 to 11.3) | .11 |
| FITd | 188 (66.2) | 198 (73.3) | 204 (71.8) | 7.7 (0.3 to 15.1) | 7.1 (−0.2 to 14.3) | .04 |
| Colonoscopye | 15 (5.3) | 9 (3.3) | 8 (2.8) | −2.1 (−5.5 to 1.3) | −2.7 (−6.1 to 0.6) | .23 |
Abbreviations: CRC, colorectal cancer; FIT, fecal immunochemical test.
a
Mailed interventions plus $10 cash incentive conditional on completion of CRC screening.
b
Mailed interventions plus entry into a lottery with a 1 in 10 chance of winning $50 conditional on completion of CRC screening.
c
Colonoscopy or FIT (no participants had flexible sigmoidoscopies).
d
Fecal immunochemical test completion as the first test (does not include colonoscopy followed by an FIT).
e
Colonoscopy completion as first test (does not include colonoscopy following an FIT).