Semnan Birth Cohort Study

Cohort facts:

Location of cohort: Semnan – Semnan Province

Main Ethnicities of participants: Fars

Conducted by: Semnan University of Medical Sciences


  • Majid Mirmohammadkhani MD PhD


  • Elham Saffarieh MD
  • Ali Khaleghian PhD
  • Nahid Rahbar MD
  • Shamsolah Nooripour MD
  • Ali Rashidy-pour PhD
  • Mahdi Shadnoosh MD PhD
  • Seyyed Mohamad Hoseini MD
  • Jafar Jandaghi MD MPH
  • Maryam Jalili Sadrabad, DDS

Study Execution:

The PERSIAN Birth Cohort Study started in Semnan in August 2017, and enrollment ended in June 2020.

Current Activity: Semnan Birth Cohort Study is currently performing routine follow-ups for the entire cohort population.

Principal Investigator: Navid Danaei, MD

Overview of Cohort Population

Final Enrolled Sample Size
10,116 individuals
Gender Distribution
47% Male
53% Female
Age Distribution

35% ----35-44 years
34%----45-54 years
24%----55-64 years

Residence Type
70% Urban
30% Rural

Contact information