Categorize the following as either an experiment, prospective observational study, or retrospective observational study. 375 adults with chronic back pain were assigned (randomly) to one of two groups. The first group received acupuncture treatments over a four-month period. The second group received a placebo over the same four-month period. The adults who received acupuncture experienced less back pain than the adults who received a placebo.
Categorize the following as either an experiment, prospective observational study, or retrospective observational study. 375 adults with chronic back pain were assigned (randomly) to one of two groups. The first group received acupuncture treatments over a four-month period. The second group received a placebo over the same four-month period. The adults who received acupuncture experienced less back pain than the adults who received a placebo.
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section: Chapter Questions
Problem 8CR
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Categorize the following as either an experiment, prospective observational study, or retrospective observational study.
375 adults with chronic back pain were assigned (randomly) to one of two groups. The first group received acupuncture treatments over a four-month period. The second group received a placebo over the same four-month period. The adults who received acupuncture experienced less back pain than the adults who received a placebo.
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