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Health Promot Pract. 2011 Mar;12(2):229-34. doi: 10.1177/1524839909332139. Epub 2009 Mar 18.

Colorectal cancer screening in primary care: theoretical model to improve prevalence in the practice partner research network.

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College of Nursing, Medical University of South Carolina in Charleston, South Carolina, USA.


Colorectal cancer (CRC) is the second leading cause of cancer death in the United States. Half of Americans older than age 50 are not current with recommended screening; research is needed to assess the impact of interventions designed to increase receipt of CRC screening. The Colorectal Cancer Screening in Primary Care (C-TRIP) study is a theoretically informed group randomized trial within 32 primary care practices. Baseline median proportion of active patients aged 50 years or older up-to-date with CRC screening among the 32 practices was 50.8% (N = 55,746). Men were more likely to have been screened than women (52.9% vs. 49.2%, respectively). Patients 50 to 59 years of age were less likely to be up-to-date with screening (45.4%) than those in the 60 to 69 years and 70 to 79 years groups (58.5% in both groups). Opportunities exist to increase the proportion of CRC screening received in adults aged 50 and older. C-TRIP evaluates the effectiveness of a model for improvement for increasing this proportion.

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