title: Confidence limits for the ratio of two rates based on likelihood scores: non-iterative method.
abstract: This paper describes a method for creating a confidence interval for the ratio of rates using the score statistic. This non-iterative and easy to apply procedure produces confidence intervals that are suitable for use with Poisson data and simulation results indicate that it is close to the nominal level for a wide range of scenarios.
authors.affiliation: Statistics, School of Mathematical and Physical Sciences, University of Newcastle, Callaghan NSW 2308, Australia. pgraham@maths.newcastle.edu.au
authors.forename: P L
authors.initials: PL
authors.lastname: Graham
authors.forename: K
authors.initials: K
authors.lastname: Mengersen
authors.forename: A P
authors.initials: AP
authors.lastname: Morton
mesh_terms: D001943:Breast Neoplasms / Q000209:etiology; D016001:Confidence Intervals; D003627:Data Interpretation, Statistical; D005260:Female; D005471:Fluoroscopy / Q000009:adverse effects; D006801:Humans; D016013:Likelihood Functions; D016012:Poisson Distribution; D014376:Tuberculosis / Q000175:diagnosis