“…Many studies have examined the changes in fertility rates and in the factors influencing fertility in Iran and other countries (Testa et al, 2012;Kohan et al, 2012). The results of these studies show the direct relationship of fertility with women's age (Kariman et al, 2014b;Daniluk & Koert, 2012;Brennan et al, 2011;Mills et al, 2011), marital age (Hosseinzadeh et al, 2010;Kariman et al, 2014b;Taghizadeh et al, 2015), sexual preferences (Akaberi et al, 2008;Mills et al, 2011;Bhat & Zavier, 2003;Adibi Sedeh et al, 2012), desired number of children (Kariman et al, 2014a;Akaberi et al, 2008;Testa et al, 2012;Kohan et al, 2012;Daniluk & Koert, 2012;Brennan et al, 2011;Mills et al, 2011;Bhat & Zavier, 2003;Sedeh et al, 2012;Tavares, 2010) and child mortality (Sadeghi et al, 2010) and its indirect relationship with marital age (Sedeh et al, 2012) and couples' level of education (Tavares, 2010;Sadeghi et al, 2010).…”