Preintervention and Postintervention Changes in Percentage of Study Participants Up-to-Date with Colorectal Cancer Screening in the Control and Intervention Groups
| CRCS Status | Control (n=246) | Intervention (n=268) | Between Group P Value |
|---|---|---|---|
| CRCS=colorectal cancer screening. | |||
| a Pearson χ2 test. | |||
| b 2-sample Wilcoxon rank-sum test on the preintervention-postintervention difference scores. | |||
| c McNemar test. | |||
| CRCS up-to-date before influenza season (October 16, 2006), % | 52.9 | 54.5 | .711a |
| CRCS up-to-date after influenza season (March 31, 2007), % | 57.3 | 84.3 | <.001a |
| Percentage point change | +4.4 (−0.7 to 9.7) | +29.8 (23.7 to 36.0) | <.001b |
| Preintervention to postintervention P valuec | .071 | <.001 | |