c - usaid

4. A MODIFIED VERSIONI OF THE FERTILITY MODEL
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We have attempted, in this section, to modify the
population council 's ferti lity
modol so s to remove the
out and discussed in the previous
deficiencies that we pointed
section.
Our model con si ts of threo blocks. Within each block,
there are sevarol
steps.
The three blocks are:
I. Bose year consistency - searching block
II. Target year ogp re qate modelLing block
III. Targot year age-specific set-e[.timation block.
A brief de .c r ipti on or each block follows, along with
theo retical justification he rever now formulas are introduced.
4.1 Bor,e year consistency - searching block
The objective of this bloc k is to put together bench mark
date and estimates for a base year and
to check internal
consistency between the followingta)
Age-specific cent r9ceptive prevalence rates and thu
overall
CPR;
b) Age-specific ferti Lity rates;
c)- Total population, number of all women in five yearly age
groups, and MWRA in five yearly age-groups;
d) Total fertility rate;
a] Crude bi rth rote;