numerous medical and nonmedical decisions, but patients with cancer and their physicians often have disparate prognostic expectations. Objective: To determine whether physician behavior might contribute to the disparity between patients ’ and physicians ’ prognostic expectations. Design: Prospective cohort study. Setting: Five hospices in Chicago, Illinois. Patients: 326 patients with cancer. Intervention: Physicians formulated survival estimates and also indicated the survival estimates that they would communicate to their patients if the patients insisted. Measurements: Comparison of the formulated and communicated prognoses. Results: For 300 of 311 evaluable patients (96.5%), physicians were able to formulate prognoses. Physicians reported that they would not communicate any survival estimate 22.7 % (95 % CI, 17.9 % to 27.4%) of the time, would communicate the same survival estimate they formulated 37 % (CI, 31.5 % to 42.5%) of the time, and would communicate a survival estimate different from the one they formulated 40.3 % (CI, 34.8 % to 45.9%) of the time. Of the discrepant survival estimates, most (70.2%) were optimistically discrepant. Multivariate analysis revealed that older patients were more likely to receive frank survival estimates, that the most experienced physicians and the physicians who were least confident about their prognoses were more likely to favor no disclosure over frank disclosure, and that female physicians were less likely to favor frank disclosure over pessimistically discrepant disclosure. Conclusions: Physicians reported that even if patients with cancer requested survival estimates, they would provide a frank estimate only 37 % of the time and would provide no estimate, a conscious overestimate, or a conscious underestimate most of the time (63%). This pattern may contribute to the observed disparities between physicians ’ and patients ’ estimates of survival
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