Conclusion
The average duration of the third stage of labor was 6.03 minutes which was close to the findings of other studies. Use of labor stimulation, analgesia during labor, and cord drainage were recognized as factors related to the prolongation of the third stage. Increase in the number of deliveries was also related to the shortening of the third stage. Awareness of these factors seems necessary in order to predict the prolongation of the third stage of labor and prevent its consequences. However, considering the controversial results of some risk factors, such as cord drainage, more studies are recommended in this field.