Collecting Physicians' Preferences on Medical Devices: Are We Doing It Right? Evidence from Italian Orthopaedists Using 2 Different Stated Preference Methods.

Physician preference items (PPIs) are medical devices particularly exposed to physicians' choice with regard to type of product and supplier.Some established techniques of collecting preferences can be affected by response biases such as acquiescent responding and social desirability.Discrete choice experiments, introducing more complex tradeoffs in the choice task, are likely to mitigate such biases and reveal true physicians' preferences for PPIs.