Talking to patients about screening colonoscopy—where conversations fall short

Discussion

An informed patient is a willing patient

Our study physicians addressed only half of the 13 informational points, likely reflecting the time constraints of a typical office visit. Primary care physicians appear to expect that either the colonoscopist or other sources of information would fill in the gaps. As reported in several studies, unanswered questions can discourage patients from keeping their scheduled colonoscopy appointment.^10,11 In one report of African-American church members, those with adequate knowledge about colorectal cancer screening were more likely to complete screening.²⁴

Wolf and Becker suggested that discussions about cancer screening address 4 broad topics: the probability of developing the cancer, the operating characteristics of the screening test(s), the likelihood that screening will benefit the patient, and potential burdens of the test.²⁵ Instead of a balanced and lengthy discussion, our study physicians generally emphasized the positives such as the value of avoiding colon cancer, the standard nature of this test, and the benefit of being sedated for the procedure. Thus, gain-framed messages about colorectal cancer were the norm for our study physicians.

Half of the physicians also offered loss-framed messages emphasizing the need to avoid the consequences of colorectal cancer and the increased threat associated with a family history of this malignancy. Research in mammography screening suggests that loss-framed messaging may be a more powerful motivator than gain-framed messaging,²⁶ but it is not clear if this observation can be generalized to colorectal cancer screening.

Walking a fine line with the particulars of risk

Our study physicians rarely provided data on the probability of developing colorectal cancer. Physicians may avoid this topic because many patients have difficulty understanding information about the risk of colorectal cancer.¹¹ In support of this approach, Lipkus and colleagues reported that various ways of informing patients about colorectal cancer risk did not affect their intention to be screened.²⁷ Of concern, most of our physicians did not address the common misconception that colorectal cancer screening is unnecessary in the absence of symptoms.²⁸

Overall, the level of numeracy information provided by study physicians required minimal patient understanding of mathematical and statistical concepts. Most information was descriptive, such as colonoscopy being “more thorough” than other tests. Though statistical concepts such as “risk” were often mentioned, few physicians offered probabilities or incidence data. Experts recommend providing such data,²⁵ but Web sites have been criticized for offering excessive numerical cancer risk data.²² Therefore, physicians must walk a fine line between providing adequate information and offering data that require a high level of health numeracy for understanding.

6 key points physicians often overlook

Most physicians failed to mention dietary and medication changes, scheduling/insurance coverage issues, and risk of complications from colonoscopy. Nearly 60% failed to discuss the patient’s risk of colorectal cancer. Almost half did not mention the need for a companion to accompany the patient after the test. Scheduling challenges, in particular, are known to interfere with completing colonoscopy.¹¹

Many neglect to describe the procedure

Thirty percent of physicians failed to describe the procedure itself, so it is not surprising that patients complain they have a poor understanding of test logistics.^11,29,30 Denberg and colleagues have reported that mailing an informational brochure about colonoscopy can increase the number who keep their appointment.³¹

How language choices may affect understanding

Other researchers have identified additional patient barriers to colonoscopy, including fear of pain, concern for modesty, and desire to avoid the bowel prep.^11,32 These concerns may be mitigated or heightened by the physician’s language. In our review of transcripts, physicians often used slang or colloquial language to describe the procedure, probably in an attempt to convey information in a familiar way. This language may be viewed as crude and potentially discouraging, but further research is needed to evaluate patient receptiveness to different ways of speaking about sensitive topics.

Additionally, physicians commonly used technical terms such as “polyp” and “biopsy” without explaining them. Technical language may increase racial disparities in adhering to scheduled colonoscopy. In a family medicine clinic, patients from minority groups had particular difficulty understanding medical terms and procedure names.²⁸ Because little time is available for counseling about cancer screening tests, and because patients retain only a limited amount of information about procedures,³³ supplementary informational sources are warranted.^15-17,31 Options include brochures, telephone calls, letters, e-mails, Web site data, and videotapes, but it is unclear which sources optimally improve patient adherence to screening colonoscopy.³⁴