title: Annals Understanding Clinical Research: Implications of Missing Data Due to Dropout.
authors.affiliation: From University of Pennsylvania and American College of Physicians, Philadelphia, Pennsylvania.
authors.forename: Joshua M
authors.initials: JM
authors.lastname: Liao
authors.affiliation: From University of Pennsylvania and American College of Physicians, Philadelphia, Pennsylvania.
authors.forename: Catharine B
authors.initials: CB
authors.lastname: Stack
mesh_terms: D001416:Back Pain / Q000534:rehabilitation; D035843:Biomedical Research; D003627:Data Interpretation, Statistical; D005081:Exercise Therapy; D006801:Humans; D026882:Manipulation, Chiropractic; D020393:Manipulation, Spinal; D059408:Pain Management; D010147:Pain Measurement; D010352:Patient Dropouts; D016032:Randomized Controlled Trials as Topic; D012107:Research Design