Perceived ambiguity about screening mammography recommendations: association with future mammography uptake and perceptions.
Conflicting expert recommendations regarding cancer screening and prevention are growing in number, visibility, and importance, but their impact are not well understood. In this study, we examined the impact of conflicting recommendations about mammography screening on women's mammography behavior and perceptions. We conducted a secondary analysis of longitudinal data from the 1995 Maximizing Mammography Participation Trial, a large randomized interventional trial examining the effectiveness of patient reminders in increasing mammography utilization among women ages 50 to 79. Using the decision theory concept of "ambiguity" as an analytic framework, we tested several predictions about the effects of conflicting recommendations regarding mammography recommendations on behavior, cognitions, and emotions related to mammography screening. We found high perceived ambiguity about mammography recommendations to be associated with both diminished uptake of mammography over time [odds ratio (OR), 0.42; 95% confidence interval (95% CI), 0.23-0.76; P < 0.0001] and lower intentions for future mammography (OR, 0.34; 95% CI, 0.20-0.55; P < 0.0001). High perceived ambiguity also predicted greater mammography-related worry over time (OR, 2.60; 95% CI, 1.79-3.78; P < 0.0001). These findings suggest that conflicting recommendations regarding cancer screening and prevention have important effects, and we discuss the implications of these findings for future research.
Han
Paul K J
PK
Outcomes Research Branch, Division of Cancer Control and Population Sciences, National Cancer Institute, 6130 Executive Boulevard, EPN 4091, MSC 7344, Rockville, MD 20892-7344, USA. hanp@mail.nih.gov
Kobrin
Sarah C
SC
Klein
William M P
WM
Davis
William W
WW
Stefanek
Michael
M
Taplin
Steven H
SH
D000368:Aged; D001294:Attitude to Health; D016009:Chi-Square Distribution; D005260:Female; D006801:Humans; D016015:Logistic Models; D008137:Longitudinal Studies; D008327:Mammography / Q000523:psychology / Q000706:statistics & numerical data*; D008875:Middle Aged; D010349:Patient Compliance; D011446:Prospective Studies; D016032:Randomized Controlled Trials as Topic; D017010:Reminder Systems; D035501:Uncertainty