The analysis of birth intervals explicitly recognizes the distinct renewable nature of the fertility process. It considers the progression from one birth to the next during a womans reproductive life. Birth spacing among women is affected by several factors and as a result for some women a birth interval is too short; for some women the interval is too long; and for other women it is just right. Hence birth intervals play a major role on childbearing and receive attention in the study of human fertility. Wider birth interval has several benefits. Longer gap between births allows a mother...