Guilan Ear Cohort Study
Cohort facts:
Location of cohort: Some-e Sara – Guilan Province
Main Ethnicities of participants: Gilaki
Conducted by: Guilan University of Medical Sciences
Co-Investigators:
- Shadman Nemati, MD
- Mir Mohammad Jalali, MD
- Farahnaz Joukar, PhD
- Mohammadreza Naghipour, PhD
Study Execution:
The PERSIAN Ear Cohort Study started in Guilan, in May 2019 and enrollment is currently ongoing.

Principal Investigator: Fariborz Mansour-Ghanaei, MD
Overview of Cohort Population
Final Enrolled Sample Size
10,116
individuals
Gender Distribution
47% Male
53% Female
53% Female
Age Distribution
35% ----35-44 years
34%----45-54 years
24%----55-64 years
7%----≥65
Residence Type
70% Urban
30% Rural
30% Rural
Contact information
Email: fmansourghanaei@gmail.com