Survey the Rend of Birth in Iran by Age Groups of Mothers During 2006-2012 years

Gestational age is Among the topics that In the last few decades, Many researchers have it studied Because increasing gestational age Caused many problems that the most important of them can be pointed to increasing risk of premature birth or birth defects. As a result of reviews of the process of birth by age groups of mothers seems essential.
Data on the number of births Were collected from Center for Civil Registration and Population data were taken from Iranian Statistics Centre. Then calculated age-specific fertility rates in Different Groups of maternal age and analysis was performed by SPSS software.
The results of this study showed the number of birthdays has increased in the age group of 25 years of mothers and older while in the age group of less than 25 years, the number of births has been declining volatility. The results also showed that the age-specific fertility rate has increased not only in the ages of mothers but also in all age groups.
Conclution: According to increasing age-specific fertility and decreasing number of births in the age group below 25 years of mothers can be concluded the number of women in the lower age is reduced. Also increase in age-specific fertility rates for all age groups show a tendency for women to have more children has increased.