title: Periodontal sites or patients as the experimental unit.
authors.affiliation: Division of Biometrics, Food and Drug Administration, Washington, D.C.
authors.forename: D
authors.initials: D
authors.lastname: Hoberman
mesh_terms: D000704:Analysis of Variance; D002986:Clinical Trials as Topic / Q000379:methods* / Q000706:statistics & numerical data; D006801:Humans; D010361:Patients; D010510:Periodontal Diseases / Q000473:pathology / Q000628:therapy*; D015203:Reproducibility of Results; D012107:Research Design