Related Experiment Video
Updated: Feb 12, 2026

Transcranial Direct Current Stimulation for Online Gamers
Published on: November 9, 2019
Online Ratings of Neurosurgeons: An Examination of Web Data and its Implications
Michael Cloney1, Benjamin Hopkins2, Nathan Shlobin2
1Department of Neurological Surgery, Northwestern University, Feinberg School of Medicine, Chicago, Illinois.
Background:
Patient satisfaction ratings are increasingly used for hospital rankings, referral base and physician reimbursement. As such, online physician rating websites (PRWs) are quickly becoming a topic of interest.
Objective:
To analyze the distribution of neurosurgeons' ratings on the 3 most widely used PRWs, and examine factors associated with positive and negative ratings.
Methods:
We used a key term search to identify board-certified neurosurgeons on 3 widely used PRWs: RateMD.com, Healthgrades.com, and Vitals.com. Data were collected on average rating and number of ratings. Demographic, training-related and practice-related data, as well as location of practice, and place of training were also collected.
Results:
Data was non-normally distributed (P < .001 for all 3). Having fewer reviews was associated with higher variance in ratings between PRWs for a given surgeon (odds ratio 0.99, P = .001). All surgeons below the 25th percentile with respect to the number of reviews that had been written about them were eliminated. Of the remaining surgeons (n = 3054), the median composite score was 4.11 out of 5, interquartile range (3.69, 4.44). Surgeons had higher median modified composite scores if they were fellowship-trained (P = .0001) or graduated from a top 25 medical school (P = .0117), but not if they graduated from a top 25 residency (P = .1056). Surgeons located in major cities had higher median composite scores (P = .0025).
Conclusion:
Online ratings for neurosurgeons must be evaluated in context. Median ratings are generally high, but variable between websites. Median scores also vary among regions and practice settings. Higher scores were associated with ranking of medical school, recent graduation, and fellowship training completion.
Related Concept Videos
Reaction Rate
The mathematical representation of the change in the concentration of reactants and products, over time, is the rate...
Related Rates
The Integrated Rate Law: The Dependence of Concentration on Time
Speciation Rates
Measuring Reaction Rates
Rate-Determining Steps
In a multistep reaction mechanism, one of the elementary steps progresses significantly slower than the others. This slowest step is called the rate-limiting step (or rate-determining step). A reaction cannot proceed faster than its slowest step, and hence, the rate-determining step limits the overall reaction rate.
The concept of rate-determining step can be understood from the analogy of a 4-lane freeway with a short-stretch of traffic-bottleneck caused due to...

