Figure 1.

Design of CRC testing questions on the 2007 Medicare Current Beneficiary Survey with analytic samples (n = 3,276). Participants who had previously heard of or received a screening by FOBT (fecal occult blood test) or sigmoidoscopy/colonoscopy were asked if they knew that Medicare helps to pay for colon cancer screening, n = 3,130. *Those who have never heard of colonoscopy were considered not to have previously received a recommendation and thus included in the dominator for this analysis.

Higgins et al. BMC Gastroenterology 2012 12:23   doi:10.1186/1471-230X-12-23
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