Table 4.

Contextual data quality issues.

Issues	Dimension	Citations
There was a low volume of reviews and ratings, with more than half the physicians having less than one to three ratings.	Appropriate amount of data	[22,23,33-37]
Physician-rating websites captured patient perceptions of physician quality; they did not capture and present objective measures of quality, such as Physician Quality Reporting System (PQRS) ratings for physicians or risk-adjusted mortality rate.	Objectivity completeness	[29,31,38,39]
Positive ratings were based on factors, such as ease of getting an appointment, short wait times, and staff behaviors, that did not directly represent physician characteristics.	Relevance	[21-23,29,41-46]
Higher ratings were associated with marketing strategies that physicians employed, such as significant online presence and promotion of satisfied patients’ reviews.	Objectivity relevance	[40,43,47]
There was a low degree of correlation among online websites on surgeon ratings.	Value addition	[44,48-51]