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Table 4.8. Effect Size of SATIS-PHI/CRC Intervention on Screening Rates

Health Care Systems for Tracking Colorectal Cancer Screening Tests

Study GroupNStool TestColonoscopyAny Screening Testa
% ScreenedOR95% CIp% ScreenedOR95% CIp% ScreenedOR95% CIp
All Practices
Control2,6620.563.313.91
Card intervention7,4954.167.661.6835.040.0094.521.390.613.170.4398.592.311.393.850.001
Kit intervention4707.6614.643.2466.040.0000.430.130.040.420.0018.092.161.403.350.001
Adjusted Control Group Denominatorb
Control2,1990.684.004.73
Card intervention7,4954.166.321.3629.310.0184.521.140.502.580.7608.591.891.143.130.013
Kit intervention4707.6612.082.6455.250.0010.430.100.030.340.0008.091.771.152.720.009
Practices With Patients Randomized to Card or Kit Interventionc
Card intervention1,8772.560.803.36
Kit intervention4707.663.162.404.160.0000.430.530.201.420.2078.092.532.143.000.000
Practices With More Complete Electronic Datad
Control2,6620.563.313.91
Interventione5,1044.578.441.8438.730.0066.271.960.954.030.06910.682.941.944.460.000
Adjusted Control Group Denominatorb
Control2,1990.684.004.73
Interventione5,1044.576.961.5032.400.0136.271.600.783.280.19510.682.411.603.620.000
Practices With EMR Systems Onlyf
Control2,5760.543.183.77
Interventione4,9504.578.751.6646.230.0116.061.960.904.270.09010.462.991.934.610.000

a. Includes stool test, colonoscopy, flexible sigmoidoscopy, or barium enema x ray. Persons with screens by multiple modalities are counted only once.
b. Control group denominator adjusted for information not obtained by SEA form or by mailings returned as undeliverable.
c. Includes only patients from the two intervention practices randomized to either receiving the kit directly or having to request it with a reply card.
d. Includes only those practices with most complete or moderately complete electronic data; excludes practices IAA, IHD, and ISA with least complete data.
e. Includes only patients receiving card intervention for stool test; patients receiving kit intervention excluded because of being from excluded practices.
f. Includes only those practices with EMR systems used for electronic record review.

Note: Odds ratio confidence intervals and p values have been adjusted using cluster variance estimators.

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Page last reviewed December 2010
Internet Citation: Table 4.8. Effect Size of SATIS-PHI/CRC Intervention on Screening Rates: Health Care Systems for Tracking Colorectal Cancer Screening Tests. December 2010. Agency for Healthcare Research and Quality, Rockville, MD. http://www.ahrq.gov/research/findings/final-reports/crcscreeningrpt/crcscreentab4-8.html