Discordant Care and Decision Quality: Patients' Reasons for Not Receiving Their Initial Test of Choice in Colorectal Cancer Screening.

Value-choice concordance is an accepted measure for assessing decision quality in decision aid trials, but greater exploration of apparently discordant care challenges key assumptions of this method; this study provides evidence that discordance as typically measured may not always reflect low-quality patient decision making.Researchers evaluating decision aids and assessing decision quality should consider the use of qualitative methods to supplement measures of decision quality and consider assessing patient preferences at multiple time points.