This made me curious about its effectiveness for back pain, so I tried to find a meta-analysis. Turned up this on plos one. (note, I can't speak for the article

This made me curious about its effectiveness for back pain, so I tried to find a meta-analysis. Turned up this on plos one. (note, I can't speak for the article's quality). > Moderate evidence suggests that chiropractic care for LBP appears to be equally effective as physical therapy. Limited evidence suggests the same conclusion when chiropractic care is compared to exercise therapy and medical care although no firm conclusion can be reached at this time. No serious adverse events were reported for any type of care. Our review was also unable to clarify whether chiropractic or medical care is more cost-effective. Given the limited available evidence, the decision to seek or to refer patients for chiropractic care should be based on patient preference and values. Future studies are likely to have an important impact on our estimates as these were based on only a few admissible studies. http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0160037 http://journals.plos.org/plosone/article?id=10.1371/journal....