In a study reported in the Sept 24 2007 issue of the

Last updated: 2/12/2023

In a study reported in the Sept 24 2007 issue of the Archives of Internal Medicine German researchers described a study conducted on 1162 German adults suffering from chronic low back pain These subjects were recruited from flyers posted in doctor s office in 3 cities in Germany Once people volunteered to participate they were randomly assigned to one of three groups real acupuncture fake acupuncture and guideline based traditional treatment Fake acupuncture was a placebo the people in this group thought they were receiving real acupuncture but the needles were not inserted at locations typically used for acupuncture After their treatment participants were asked whether or not their pain had improved Researchers found that 47 of subjects in the real acupuncture group improved compared to 44 in the fake acupuncture group and 27 in the guideline based traditional treatment group What type of sampling was used in this study Probability sampling O Non probability sampling