Azar Cohort Study

Cohort facts:

Location of cohort: Khameneh – East Azarbaijan Province

Main Ethnicities of participants: Turk

Conducted by: Tabriz University of Medical Sciences


  • Alireza Ostadrahimi, MD, PhD
  • Elnaz Faramarzi, PhD
  • Ali Fakhari, MD
  • Samad Ghafari, MD
  • Khalil Ansarin, MD
  • Asghar Mohammadpoor, PhD

Study Execution:

The PERSIAN Cohort Study started in Khameneh, in October 2014, and enrollment ended in February 2017.

Current Activity: Azar Cohort Study is currently performing annual follow-ups for the entire cohort population and also conducting a repeated measurement phase for 30% of the enrolled participants who have been selected randomly.

Principal Investigator: Mohamadhossein Somi, MD

Overview of Cohort Population

Final Enrolled Sample Size
15,006 individuals
Gender Distribution
45% Male
55% Female
Age Distribution

34%-----35-44 years
34%-----45-54 years
24%-----55-64 years
8%-----≥65 years

Residence Type
70% Urban
30% Rural

Contact information