Table 4.
Results of Colorectal Cancer Screening Tests Received by the Full Sample During the 6-Month Period Following Mailing Intervention.
| FIT n=500 |
Ed n=499 |
UC n=500 |
|
|---|---|---|---|
| First CRC Test received | n=103 | n=28 | n=28 |
| FIT | n=71* | n=0 | n=0 |
| Negative | 86% (61) | -- | -- |
| Positive | 14% (10) | -- | -- |
| gFOBT | n=2 | n=1 | n=7 |
| Negative | 50% (1) | 0% (0) | 100% (7) |
| Positive | 50% (1) | 100% (1) | 0% (0) |
| Colonoscopy | n=30 | n=27 | n=21 |
| No polyps detecteda | 53% (16) | 30% (8) | 48% (10) |
| Non-cancerousb polyps only detected | 17% (5) | 26% (7) | 5% (1) |
| Pre-cancerousc polyps detected | 30% (9) | 44% (12) | 43% (9) |
| Unknown type of polyp (poor prep) | 0% (0) | 0% (0) | 5% (1) |
| No screening performed | n=397 | n=471 | n=472 |
| Follow-up for all with positive FIT or FOBT | n=11 | n=1 | n=0 |
| Colonoscopy | n=8 | n=1 | n=0 |
| No polyps detecteda | 63% (5) | 0% (0) | 0% (0) |
| Non-cancerousb polyps only detected | 0% (0) | 100% (1) | 0% (0) |
| Pre-cancerousc polyps detected | 38% (3) | 0% (0) | 0% (0) |
| No follow-up colonoscopy performed | n=3** | n=0 | n=0 |
*
Results based on the full sample, which included 7 subjects who were ineligible due to symptoms or personal/family medical history but returned FIT; 2 received positive results.
**
Two subjects had terminal conditions with limited life expectancies and one subject refused.
1
Hemorrhoids or diverticulosis were often found among those with no polpys.
2
Includes hyperplastic polyps, squamous papillomas and lymphoid aggregate polyps.
3
All subjects in this category had tubular adenomas; 1 subject in the FIT group and 1 subject in the Ed group also had tubulovillous adenomas.