Table G-1Current volume of procedures, by provider type

Author, Year
Study Design
Setting
ResultsQuality Rating
Brown et al., 20031

Cross-sectional and modeling

National sample of MDs (primary care physicians, general surgeons, gastroenterologists)
Percentage of FSs conducted (in 2000) by: Gastroenterologists 25%
Primary care physicians 65%
Surgeons 11%

Percentage of colonoscopies conducted by: Gastroenterologists 66%
Primary care physicians 1%
Surgeons 33%
Good
Robertson et al., 20062

Cross-sectional secondary data analysis

Medicare and TRICARE populations
Percentage of colonoscopies conducted (in 2001) by: Gastroenterologists 66% (Medicare) and 73% (TRICARE)
Internal medicine physicians 10% (Medicare) and 10%(TRICARE)
Surgeons 13% (Medicare) and 11% (TRICARE)
Other 11% (Medicare) and 6% (TRICARE)
Fair
Seeff et al., 20043

Cross-sectional

National sample of endoscopy practices
Percentage of FSs conducted (in 2002) by: Gastroenterologists 44%
Primary care physicians 25%
Surgeons 21%
Other 11%

Percentage of colonoscopies conducted by: Gastroenterologists 83%
Primary care physicians 2%
Surgeons 11%
Other 5%
Fair

FS, flexible sigmoidoscopy.

From: Appendix G, Additional Material for KQ 4

Cover of Enhancing the Use and Quality of Colorectal Cancer Screening
Enhancing the Use and Quality of Colorectal Cancer Screening.
Evidence Reports/Technology Assessments, No. 190.
Holden DJ, Harris R, Porterfield DS, et al.

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