title: A test for a threshold in an ordered sequence of correlated proportions.
abstract: A test procedure using chi-square statistics is proposed for determining a threshold in an ordered sequence of correlated proportions. The procedure is based on the multivariate Bernoulli model. It is applied to the problem of ascertaining when visual acuity has stabilized in a group of patients with regular follow-up after a vision-reducing acute abnormality.
authors.affiliation: Department of Biostatistics, Johns Hopkins University, School of Hygiene and Public Health, Baltimore, Maryland 21205.
authors.forename: A W
authors.initials: AW
authors.lastname: Kimball
mesh_terms: D000704:Analysis of Variance; D002986:Clinical Trials as Topic / Q000379:methods; D005500:Follow-Up Studies; D006801:Humans; D008028:Light Coagulation; D011336:Probability; D011897:Random Allocation; D012170:Retinal Vein Occlusion / Q000601:surgery*; D014792:Visual Acuity