When the index is close to 1, the proximate determinant will have a negligible inhibiting effect on fertility, whereas when it tends a value of 0, it will have a large inhibiting effect. The average effectiveness of the family planning methods in use have been taken into account while calculating the index of non-contraception. The value of TF is rather stable between 13 and 17 births per woman, with the average value being 15.3. In this analysis, the average of TF has been taken.