In a Study of Acupuncture for Treating Pain 100 Patients

Multiple Choice

In a study of acupuncture for treating pain 100 patients were recruited. Half were randomly assigned to receive acupuncture and the other half to receive a sham acupuncture treatment. The patients were followed for 6 months and the degree of pain relief measured. The patients did not know which treatment they actually received, but the treating physicians were aware of who was getting acupuncture and who wasn't. Which of the following does not apply to this study?

A) Randomized Experiment
B) Retrospective Study
C) Placebo Control
D) Single Blind