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Tailored intervention has low impact on colorectal cancer screening

Date:
May 13, 2014
Source:
UC Davis Comprehensive Cancer Center
Summary:
Colorectal cancer screening saves lives, but too few people get tested. In an effort to increase these numbers, researchers investigated whether an individualized interactive multimedia computer program (IMCP) would spur patients to get screened. Tailored to each patient’s knowledge, language, and perceptions, this sophisticated intervention increased patients’ familiarity with their options and motivation for screening. However, the program generated only a modest increase in actual screening, one no greater than the increase resulting from a simple non-tailored “electronic leaflet.”

Colorectal cancer screening saves lives, but too few people get tested. In an effort to increase these numbers,researchers from UC Davis and elsewhere investigated whether an individualized interactive multimedia computer program (IMCP) would spur patients to get screened. Tailored to each patient's knowledge, language (English or Spanish), and perceptions, this sophisticated intervention increased patients' familiarity with their options and motivation for screening. However, the program generated only a modest increase in actual screening, one no greater than the increase resulting from a simple non-tailored "electronic leaflet." The paper was published in the Annals of Family Medicine.

"We felt this novel approach might increase screening rates," said lead author Anthony Jerant, professor in the Department of Family and Community Medicine at UC Davis. "While it did have a significant impact on attitudes, those did not translate into a significant increase in testing."

Compared to other preventive diagnostics, such as mammograms and prostate cancer screening (PSA) tests, colorectal screening rates are low. They are especially low among Latinos, who often face economic, language and other barriers. Previous research has shown that tailoring an educational program to each patient's needs can make the information more relevant, spurring the patient to take action. For example, personalized techniques have helped people address depression. The researchers hoped the enhanced approach would motivate equal numbers of Latino and non-Latino participants to get screened, and help close the gap in screening rates among different ethnic groups.

To test this, the researchers enrolled 1,164 patients between the ages of 50 and 75 in Sacramento, California, Rochester and the Bronx, New York, Denver, Colorado, and San Antonio, Texas. Before a doctor's visit, each test group participant received a questionnaire to determine their screening knowledge. They were queried on a number of issues that might affect their motivation, including perceived barriers, such as time and cost, confidence in their ability to be screened and any previous screening experiences.

The data from the questionnaires was then fed into the IMCP, which educated participants in Spanish or English (depending on the language they chose) based on their answers. The program provided tailored information about different screening methods, potential side effects and other deterrents, as well as information designed to motivate the patient. In most cases, the program recommended a specific test (colonoscopy, flexible sigmoidoscopy or fecal occult blood test) based on the information the patient had given.

The control group received basic, non-tailored screening information reformulated from the National Cancer Institute's website, essentially an "electronic leaflet." Both groups accessed the information via touchscreen notebook computers. Patients also were subdivided by ethnicity, language, income and other factors to ensure the two groups were well matched.

The researchers tracked the participants for one year to determine whether the interventions affected their screening choices. Despite the tailored program, screening increased relatively little. After a year, 22 percent of control patients had been screened compared to 23 percent of patients who accessed the IMCP.

A number of factors may have contributed to the results. The majority of study participants had low incomes, which may have been too great a barrier, despite increased knowledge and motivation. In addition, unlike some other tests, colorectal screening requires a sustained commitment. For example, a patient getting a colonoscopy must make a separate future appointment, give up a day of work, arrange for transportation and conduct onerous preparations.

"We've seen some evidence where interventions that address these barriers in a more systematic way have greater success rates," noted Jerant. "That would be more of a case management approach. However, that can be both time-consuming and costly and may not be practical on a large scale. That's why we tested a brief, purely patient-focused approach."

Though the tailored approach did not increase colorectal cancer screening rates, Jerant and colleagues say the findings will help them focus on developing other ways to improve screening. Also, tailored programs could positively influence patient health in other areas.

"Tailored interventions still have tremendous promise, and have been shown to improve other health outcomes, such as initial treatment of depression," said Jerant. "We just can't assume they will work across the board. The emerging evidence is that they do not have a huge effect on colon cancer screening."


Story Source:

The above story is based on materials provided by UC Davis Comprehensive Cancer Center. Note: Materials may be edited for content and length.


Journal Reference:

  1. A. Jerant, R. L. Kravitz, N. Sohler, K. Fiscella, R. L. Romero, B. Parnes, D. J. Tancredi, S. Aguilar-Gaxiola, C. Slee, S. Dvorak, C. Turner, A. Hudnut, F. Prieto, P. Franks. Sociopsychological Tailoring to Address Colorectal Cancer Screening Disparities: A Randomized Controlled Trial. The Annals of Family Medicine, 2014; 12 (3): 204 DOI: 10.1370/afm.1623

Cite This Page:

UC Davis Comprehensive Cancer Center. "Tailored intervention has low impact on colorectal cancer screening." ScienceDaily. ScienceDaily, 13 May 2014. <www.sciencedaily.com/releases/2014/05/140513091440.htm>.
UC Davis Comprehensive Cancer Center. (2014, May 13). Tailored intervention has low impact on colorectal cancer screening. ScienceDaily. Retrieved July 31, 2014 from www.sciencedaily.com/releases/2014/05/140513091440.htm
UC Davis Comprehensive Cancer Center. "Tailored intervention has low impact on colorectal cancer screening." ScienceDaily. www.sciencedaily.com/releases/2014/05/140513091440.htm (accessed July 31, 2014).

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