Changes in Colon Cancer Screening Behavior From Baseline to Follow-up: Intervention vs Control
| Weighted Variable | Intervention Region, % (n=1,018) | Control Region, % (n=988) | Difference in Change,aP Value | ||
|---|---|---|---|---|---|
| Baseline (n=518) | Follow-up (n=500) | Baseline (n=487) | Follow-up (n=501) | ||
| Any test | |||||
| Ever had | 76 | 81 | 77 | 77 | .22 |
| Up to date | 60 | 69 | 57 | 65 | .82 |
| Plans to have | 16 | 28 | 15 | 17 | .18 |
| Fecal occult blood test | |||||
| Ever had | 61 | 63 | 64 | 60 | .11 |
| Up to date | 29 | 29 | 34 | 29 | .29 |
| Plans to have | NA | NA | NA | NA | NA |
| Sigmoidoscopy | |||||
| Ever had | 35 | 35 | 32 | 31 | .72 |
| Up to date | 30 | 30 | 25 | 25 | .70 |
| Plans to have | 5 | 7 | 5 | 7 | .73 |
| Colonoscopy | |||||
| Ever had | 43 | 55 | 42 | 52 | .70 |
| Up to date | 38 | 52 | 37 | 49 | .78 |
| Plans to have | 9 | 15 | 8 | 17 | .63 |
| Endoscopyb | |||||
| Ever had | 53 | 62 | 50 | 58 | .83 |
| Up to date | 47 | 58 | 43 | 53 | .86 |
| Plans to have | 8 | 18 | 9 | 19 | .54 |
| Barium enema | |||||
| Ever had | 27 | 25 | 30 | 23 | .31 |
| Up to date | 13 | 11 | 12 | 8 | .38 |
| Plans to have | NA | NA | NA | NA | NA |
| Virtual colonoscopy | |||||
| Ever had | 15 | 15 | 11 | 11 | .83 |
| Up to date | 10 | 11 | 9 | 8 | .91 |
| Plans to have | NA | NA | NA | NA | NA |
NA=not applicable.
Note: Models for “ever had” and “up to date” were adjusted for intervention group; time; time-by–intervention group interaction; and respondent’s age, sex, race, and income; these analyses included all respondents. Models for “plans to have” were adjusted for intervention group, time, and time-by–intervention group interaction; these analyses included only respondents who never had the test performed.
↵a Intervention vs control, change from baseline to follow-up.
↵b Sigmoidoscopy and/or colonoscopy.