Comparison of treatments in a cataract surgery with circular response. (October 2016)

• Record Type: Journal Article
• Authors: Biswas, Atanu; Dutta, Somak; Laha, Arnab Kumar; Bakshi, Partho K
• Is Part Of: Statistical methods in medical research. Volume 25:Number 5(2016:Oct.)
• Page Start: 2238
• Page End: 2249
• Publication Date: 2016-10
• Subjects: circular data -- concentration parameter -- von Mises distribution; Medicine -- Research -- Statistical methods -- Periodicals; Research -- Periodicals; Review Literature -- Periodicals; Statistics -- methods -- Periodicals; Médecine -- Recherche -- Méthodes statistiques -- Périodiques; 610.727
• DOI: 10.1177/0962280213519717
• Languages: English
• ISSNs: 0962-2802

Abstract

Circular data are a natural outcome in many biomedical studies, e.g. some measurements in ophthalmologic studies, degrees of rotation of hand or waist, etc. With reference to a real data set on astigmatism induced in two types of cataract surgeries we carry out some two-sample testing problems with the possibility of common or different concentration parameters in the circular set up. Detailed simulation study and the analysis of the data set, including redesigning the cataract surgery data, are carried out.