A decision aid for teaching limitations of prostate cancer screening.

There is minimal research regarding men's knowledge of the limitations of prostate cancer screening. This study measured knowledge of prostate cancer screening based on exposure to one of two decision aids that were related to prostate cancer screening (enhanced versus usual care). The sample consisted primarily of low income (54%) African-American men (81%) (n=230). The enhanced decision aid was compared against the usual care decision aid that was developed by the American Cancer Society. The enhanced decision aid was associated with higher post-test knowledge scores, but statistically significant differences were observed only in the men who reported having had a previous DRE (p = 0.013) in the multivariable analyses. All the men were screened, regardless of which decision aid they received. This study highlights the impact of previous screening on education of the limitations of prostate screening, and challenges the assumption that increased knowledge of the limitations of prostate cancer screening will lead to decreased screening.

Knowledge of the limitations associated with prostate cancer screening among low-income men.

This correlational pilot study measured limitations of prostate cancer screening, using a revised Knowledge of Prostate Cancer Questionnaire. Knowledge in 81 low-income men is reported. The Knowledge About Prostate Cancer Screening Questionnaire consists of 12 questions, with scores ranging from 0 to 12. Concepts measured include limitations, symptoms, risk factors, and screening age guidelines. The Total Knowledge Score had a mean of 6.60, with a standard deviation of 3.00, indicating that knowledge was low. Half of the men knew that "some treatments for prostate cancer can make it harder for men to control their urine." More than half of the men knew that, "some treatments for prostate cancer can cause problems with a man's ability to have sex." Married men, low-income men, and Caucasian men had significantly lower Total Knowledge Scores than unmarried, higher income, and African American men. Implications for practice and research are discussed.

Impact of pretest on posttest knowledge scores with a Solomon Four research design.

There is a paucity of research on the effects of pretest measurement with prostate cancer screening. What effect does a pretest measurement have on posttest outcomes? This research reports knowledge of prostate cancer screening among men randomized to an Enhanced decision aid versus an Usual Care decision aid. Using a Solomon Four research design, there were a total of 198 men in 4 groups. Most of the sample was African American (78%), with a mean age of 52 years. The greatest posttest knowledge occurred with the Enhanced decision aid in contrast to the Usual Care. The Enhanced/Usual Care groups that had both a pretest and posttest and had received a previous digital rectal examination had the highest means (P = .015), with means of 9.1 and 7.0, respectively. Among men who had a previous digital rectal examination, the greatest increase in score occurred among men randomized to the Enhanced decision aid in contrast to the Usual Care decision aid, 2.9 versus 0.4 (P = .008). The outcome varied based on the status of (1) random group assignment of the Solomon Four design and (2) status of previous digital rectal examination. Implications for nurses include consideration 1 of a pretest to increase posttest knowledge scores.