title: A spatial scan statistic for survival data based on Weibull distribution.
abstract: The spatial scan statistic has been developed as a geographical cluster detection analysis tool for different types of data sets such as Bernoulli, Poisson, ordinal, normal and exponential. We propose a scan statistic for survival data based on Weibull distribution. It may also be used for other survival distributions, such as exponential, gamma, and log normal. The proposed method is applied on the survival data of tuberculosis patients for the years 2004-2005 in Nainital district of Uttarakhand, India. Simulation studies reveal that the proposed method performs well for different survival distribution functions.
authors.affiliation: Department of Statistics, Kumaun University, S.S.J. Campus, Almora, India.
authors.forename: Vijaya
authors.initials: V
authors.lastname: Bhatt
authors.forename: Neeraj
authors.initials: N
authors.lastname: Tiwari
mesh_terms: D016000:Cluster Analysis; D003198:Computer Simulation; D006801:Humans; D007194:India / Q000453:epidemiology; D009010:Monte Carlo Method; D016008:Statistical Distributions; D016019:Survival Analysis; D014376:Tuberculosis / Q000453:epidemiology
keywords: Weibull model; cluster detection; geographical surveillance; spatial scan statistic; survival data; tuberculosis