Research Article
Length of Hospital Stay at Arak (Central Iran) Maternity Clinics Using Proposed Zero-Inflated Negative Binomial Modeling
Department of Biostatistics and Health, Arak University of Medical Sciences, Arak, Iran
S.M.T. Ayatollahi
Department of Biostatistics and Epidemiology, School of Public Health, Shiraz University of Medical Sciences, Shiraz, Iran
J. Behboodian
Department of Statistics, Shiraz University, Shiraz, Iran