Quick True or False question to brighten your day: If you switched doctors and your new doctor had access to your previous x-rays and lab tests, you’d probably not need to re-do your tests again.
If you answered true, great, you’re far more optimistic than what this study in Health Affairs reveals about doctors’ test-ordering propensities. According to the study (which BTW I haven’t fully read yet, having read only the abstract and the write-up about the study in the Health Affairs blog), doctors who had access to prior tests and images – tended to order more tests, not fewer, contrary to what one would expect.
One of the big reasons why EMRs are being so heavily touted from the government downwards is because they’re expected to reduce redundancies and save costs. Except that they might not.
Here’s a rundown of the study, based on what I read in the abstract as well as blog entry:
– The study analyzed 28,741 patient visits to 1,187 doctors offices in 2008.
– Access to computerized imaging results was associated with a 40-70% higher chance of a test being re-ordered. Access to such tests was not necessarily through an EHR.
– The presence of an EHR was not the key factor affecting the results found by the study. Rather it was the access to prior test results which was the determining factor. According to the blog post, “Physicians without such access ordered imaging in 12.9 percent of visits, while physicians with access ordered imaging in 18.0 percent of visits.”
– Also according to the blog, specialists tended to order additional imaging tests compared with primary care physicians. There were also gender differences with women receiving more tests than men.
– It’s not clear why. The blog quotes a researcher as surmising that perhaps if you make something easier to do, people will tend to do them more often, presumably referring to the ease with which a test can viewed, and later ordered from an EHR.
Of course I’m interested in knowing more about what’s going on and more importantly why.
– The finding about specialists might even make sense if the study had delved into how sick the population visiting the specialists was. Specialists typically see patients after they’ve been seen by a PCP, and maybe they’re seeing a sicker population on average.
– I also want to know more about the quality of images and how easily they can be accessed by the physicians across various. If my hospital or practice uses Vendor A’s EMR and I’ve been allowed to view Patient B’s records on Vendor X’s EHR, maybe I will just order a new test to get the same data into my own system.
– I’m also wondering what the insurance company’s take on all this is. I’ve not had much experience with imaging and tests and the like, touch wood, so this is a genuine doubt, no matter how stupid it sounds to you readers. I get a test done today, and a month later a different physician orders the same test, will my insurance company refuse to cough up for my second test?