Health Care Systems for Tracking Colorectal Cancer Screening Tests

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

Study Group N Stool Test Colonoscopy Any Screening Testa
% Screened OR 95% CI p % Screened OR 95% CI p % Screened OR 95% CI p
All Practices
Control 2,662 0.56 3.31 3.91
Card intervention 7,495 4.16 7.66 1.68 35.04 0.009 4.52 1.39 0.61 3.17 0.439 8.59 2.31 1.39 3.85 0.001
Kit intervention 470 7.66 14.64 3.24 66.04 0.000 0.43 0.13 0.04 0.42 0.001 8.09 2.16 1.40 3.35 0.001
Adjusted Control Group Denominatorb
Control 2,199 0.68 4.00 4.73
Card intervention 7,495 4.16 6.32 1.36 29.31 0.018 4.52 1.14 0.50 2.58 0.760 8.59 1.89 1.14 3.13 0.013
Kit intervention 470 7.66 12.08 2.64 55.25 0.001 0.43 0.10 0.03 0.34 0.000 8.09 1.77 1.15 2.72 0.009
Practices With Patients Randomized to Card or Kit Interventionc
Card intervention 1,877 2.56 0.80 3.36
Kit intervention 470 7.66 3.16 2.40 4.16 0.000 0.43 0.53 0.20 1.42 0.207 8.09 2.53 2.14 3.00 0.000
Practices With More Complete Electronic Datad
Control 2,662 0.56 3.31 3.91
Interventione 5,104 4.57 8.44 1.84 38.73 0.006 6.27 1.96 0.95 4.03 0.069 10.68 2.94 1.94 4.46 0.000
Adjusted Control Group Denominatorb
Control 2,199 0.68 4.00 4.73
Interventione 5,104 4.57 6.96 1.50 32.40 0.013 6.27 1.60 0.78 3.28 0.195 10.68 2.41 1.60 3.62 0.000
Practices With EMR Systems Onlyf
Control 2,576 0.54 3.18 3.77
Interventione 4,950 4.57 8.75 1.66 46.23 0.011 6.06 1.96 0.90 4.27 0.090 10.46 2.99 1.93 4.61 0.000

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 October 2014
Internet Citation: Table 4.8. Effect Size of SATIS-PHI/CRC Intervention on Screening Rates. Content last updated October 2014. Agency for Healthcare Research and Quality, Rockville, MD. http://www.ahrq.gov/research/findings/final-reports/crcscreeningrpt/crcscreentab4-8.html