Health Care Systems for Tracking Colorectal Cancer Screening Tests

Table 4.16. Screening Rate Multivariable Logistic Regression, Including Study Arm (Intervention and Control Practices): Reduced Model

Characteristics Stool Testa Colonoscopyb Any Screening Testc
OR 95% CI p OR 95% CI p OR 95% CI p
 
Patient Characteristics
Age
50-54        
55-64 1.25 0.81 1.92 0.311         1.04 0.81 1.32 0.781
65-69 1.81 1.31 2.51 0.000         1.26 1.00 1.58 0.052
70-79 1.88 1.12 3.16 0.016         1.32 1.02 1.72 0.038
Practice Characteristics
Study arm
Control
Card intervention 8.00 1.71 37.43 0.008 2.62 1.72 3.99 0.000 3.09 2.26 4.22 0.000
Kit intervention 19.84 3.95 99.69 0.000 1.50 0.60 3.79 0.387 6.64 4.50 9.80 0.000
Specialty
Family medicine        
General internal medicine         1.27 1.03 1.57 0.025 1.16 0.93 1.45 0.182
Size
Small        
Large         0.64 0.41 1.01 0.054 0.89 0.60 1.34 0.588
Location
Urban        
Rural         2.70 1.70 4.29 0.000 1.69 1.10 2.60 0.016
Suburban         3.60 2.40 5.41 0.000 2.10 1.49 2.96 0.000
Data sources usedd
Least complete
Moderately complete 1.75 0.58 5.27 0.320 18.92 7.20 49.66 0.000 4.84 1.88 12.45 0.001
Most complete 1.38 0.65 2.92 0.395 13.85 8.05 23.83 0.000 3.31 1.79 6.12 0.000

a Hosmer-Lemeshow Χ2 = 1.96, p = 0.9619.
b. Hosmer-Lemeshow Χ2 = 10.2, p = 0.1163.
c Hosmer-Lemeshow Χ2 = 10.49, p = 0.232. Includes stool test, colonoscopy, flexible sigmoidoscopy, or barium enema x ray. Persons with screens by multiple modalities are counted only once.
d The data sources used affects the amount of screening information available for patients of a given practice. It is not an indicator of predicting screening. Instead, this variable is used to control for the fact that some practices had more complete data than others.

Note: Confidence intervals and p values have been adjusted using cluster variance estimators.

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Page last reviewed October 2014
Page originally created September 2012
Internet Citation: Table 4.16. Screening Rate Multivariable Logistic Regression, Including Study Arm (Intervention and Control Practices): Reduced Model. Content last reviewed October 2014. Agency for Healthcare Research and Quality, Rockville, MD. http://www.ahrq.gov/research/findings/final-reports/crcscreeningrpt/crcscreentab4-16.html