1- Associate Professor (PhD), Department of Biostatistics, School of Public Health, Hamadan University of Medical Sciences, Hamadan, IR Iran ; Modeling of Noncommunicable Diseases Research Center, Hamadan University of Medical Sciences, Hamadan, IR Iran , soltanian@umsha.ac.ir 2- Modeling of Noncommunicable Diseases Research Center, Hamadan University of Medical Sciences, Hamadan, IR Iran 3- Associate Professor (PhD), Department of Biostatistics, School of Public Health, Hamadan University of Medical Sciences, Hamadan, IR Iran ; Modeling of Noncommunicable Diseases Research Center, Hamadan University of Medical Sciences, Hamadan, IR Iran