title: Alternative time scales and failure time models.
abstract: In many reliability applications, there may not be a unique plausible scale in which to measure time to failure or assess performance. This is especially the case when several measures of usage are available on each unit. For example, the age, the total number of flight hours, and the number of landings are usage measures that are often considered important in aircraft reliability. Similarly, in medical or biological applications of survival analysis there are often alternative scales (e.g., Oakes, 1995). This paper considers the definition of a "good" time scale, along with methods of determining a time scale.
authors.affiliation: Department of Statistics, University of Toronto, ON, Canada. duchesne@utstat.toronto.edu
authors.forename: T
authors.initials: T
authors.lastname: Duchesne
authors.forename: J
authors.initials: J
authors.lastname: Lawless
mesh_terms: D006302:Health Services Research / Q000706:statistics & numerical data*; D015233:Models, Statistical; D016019:Survival Analysis; D013995:Time