Methods: This is a retrospective cohort analysis of a 100% sample of annualized Medicare claims data on 1 157 475 beneficiaries aged 66 to 99 years with an office visit to either a chiropractor or primary care physician for neck pain. We compared hazard of vertebrobasilar stroke and any stroke at 7 and 30 days after office visit using a Cox proportional hazards model. We used direct adjusted survival curves to estimate cumulative probability of stroke up to 30 days for the 2 cohorts. Results: The proportion of subjects with stroke of any type in the chiropractic cohort was 1.2 per 1000 at 7 days and 5.1 per 1000 at 30 days. In the primary care cohort, the proportion of subjects with stroke of any type was 1.4 per 1000 at 7 days and 2.8 per 1000 at 30 days. In the chiropractic cohort, the adjusted risk of stroke was significantly lower at 7 days as compared to the primary care cohort (hazard ratio, 0.39; 95% confidence interval, 0.33-0.45), but at 30 days, a slight elevation in risk was observed for the chiropractic cohort (hazard ratio, 1.10; 95% confidence interval, 1.01-1.19).
absolutely flummoxed at this chiropractic safety study on stroke risk in chiropractic vs medical treatment in older adults referring to a 183% increase in strokes in people who went to chiropractors as a "slight elevation in risk" but this is really really really typical for chiropractic studies. i look at them a lot and they absolutely flood the publishing landscape with stuff like this, so much so that it drowns out basic science-based medicine papers called like "CHIROPRACTY: BAD???? WE CHECKED AGAIN AND THE ANSWER IS STILL YES" and i think thats fully intentional because even if your pep pep tries to go online and look this stuff up, he cant
the layman's translation here is "you are almost twice as likely to have a stroke if you go to a chiropractor for neck pain, according to this study anyway" and i looked up the authors, they all appear to be chiropractors writing for a chiropractic journal (and reporting "no conflict of interest" of course but thats not what "conflict of interest" means in this context, which is why its important to check out the backgrounds of people who write studies generally)
whats even funnier is that the chiropractic patient group may have been, as a group, less likely to get strokes anyway in the short term and it was the chiropracty that fucked them up. impossible to control for in this data and purely evil speculation on my part but still funny to think about. their stroke risk was lower than the control group when the study started, and then got worse AFTER the chiropractic treatment
i cant emphasize strongly enough this was published IN A CHIROPRACTIC MEDICAL JOURNAL. so you can imagine what their patient selection criteria and data looked like before they polished this turd




















