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To estimate the probable number of pregnancies that may occur in any area, the following formula could be used: Probable number of Pregnancies = Population of the area x Birth rate of the area(district/state). Once the probable number of pregnancies is estimated this also will be the probable number of deliveries that an ANM can except in her area.

The number of antenatal registrations to be expected would be the probable number of pregnancies with an additional 10% of that number to account for abortions.

According the number of antenatal registration the MCH services e.g. ANC visits, TT doses, IFA administration can be estimated.

It has been observed that 15% of the antenatal women registered in a population are usually high risk. Thus to estimate the number of high risk women that an ANM can expect she should compare her figures with a number which is 15% of the expected antenatal registration.

It has also been observed that 50% of the antenatal cases registered are anaemic. Thus the ANM should compare her figures which is 50% of the expected antenatal registration.