c - usaid

J49
(f]
Usa-effectiveness of cont raceptive methods [a]
The overall value of e can buo ssumed to rise from 0.84 In
1981 to 0.9 by 1990, end then stay at that Leve l through
2001. The a go-,poci fic vaLues in ages below 30 are alight Ly
Lowor than those in egos over 30. For each target year,
values con sistent with these hove been assumed for
incLusion in tha package of inputs.
g
Age-specific cont recopt ive prevalence rates in the base year
(u (0 ) as ' well ne the overall v luu in the base year
(u(O)) . Such values for the base year 1981 are needed as
inputs for u iing formula (4.18].
(h]
Trend-reguLator R
u( t
R can be a sighed any value between -1 and------
u(O)
1. Since
u[ t) varies for each target year, the upper limit of R also
varies, for example it is 0.4258 for 1906, 0.9139 for 1991,
1.3110 for 1996 and 1.6938 for 2001.
( ] Program re-allocation factor K
K can be assigned any value between 0 and 1.
Exponential
xJ
average deflator D.
D can be assigned any value between 0 and I. In fact, a
self-devised
computer program helps us in identifying an R-
K-D combination which yie Lda estimates of TFR and CBR
close
to commonly accepted target values, subject to the
consistency condition
1HWRA .U i
HWRA x u
Corresponding to each pattern of natural fertility, aix main
outputs have been obtained for each target year, which are
specified below along with the relevant formulas:­