Determinants of specialist physician ambulatory visits: a neurology example.

A new interesting article has been published in J Med Econ. 2019 Aug;22(8):830-839. doi: 10.1080/13696998.2019.1618861. Epub 2019 Jun 18. and titled:

Determinants of specialist physician ambulatory visits: a neurology example.

Authors of this article are:

van der Goes DN, Ney JP, Garrison LP.

A summary of the article is shown below:

Background: Economic theory argues that specialization in medicine improves efficiency. Current literature suggests that access to and utilization of specialist care vary widely based on many determinants. Thus, understanding the determinants of specialist physician ambulatory care utilization is integral to healthcare policy. Objectives: The objective is to investigate the individual and community determinants of specialist ambulatory care utilization-specifically neurologists. The aim was to find predictors of specialist utilization and to identify the particular determinants that can be modified by regulatory or legislative action. Methods: A large claims database, Truven Health Analytics™ Marketscan data, was used from 2007-2010 as the sample. These data are supplemented with data from the American Academy of Neurology (for geographic distribution of neurologists) and the US Census American FactFinder (for community demographic factors). Multivariate regression analysis was run to test the hypotheses. Several robustness tests of our models were included. Results: Most importantly, neurologists per capita has a meaningful impact on utilization. Additionally, the difference in neurologist usage by neurological condition is an important factor. It was also found that union status, age, comorbidities, and diagnosis are significant individual level determinants, and that the percentage of Hispanic residents and median income are significant community level determinants. Conclusions: There are two predictors believed to be the most important. The first is the unique neurologists per 1,000 capita variable, which shows a small increase in the number of neurologists would be correlated with a small increase in the probability of seeing a neurologist. We suggest that this is within policymakers’ control, and policymakers should consider this action in the face of the predicted shortage. The second is what appears to be possible sorting by neurologists of patients based on diagnosis – the large difference in the fraction of patients seeing a neurologist by disease.

Check out the article’s website on Pubmed for more information:



This article is a good source of information and a good way to become familiar with topics such as: I1;I12;I14;Specialist physicians;ambulatory care;determinants of medical care utilization;neurology.

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