Page 19 - Health, Population and Environment Education 10

specific fertility rate (ASFR) of women of different age groups with 5 (class interval) and
dividing it by 1000. It is regarded as more efficient and accurate than CBR, GFR and ASFR
for measuring fertility.
Mathematically,
ΣASFR × 5(class interval)
TFR =
1000
It is expressed per woman.

Worked out example: 4

Find out Total Fertility Rate (TFR) of female in mountain and hilly region based on
the following table:

Age Specific Fertility Rate (ASFR)
Age Groups
Mountain Region Hilly Region
(15 – 19) years 152 182
(20 – 24) years 280 308
(25 – 29) years 363 400

(30 – 34) years 225 305
(35 – 39) years 185 206
(40 – 44) years 105 110
(45 – 49) years 50 65

Solution:
Given,
In Mountain Region
ΣASFR = 152 + 280 + 363 + 225 + 185 + 105 + 50

= 1360
Now,
ΣASFR × 5
TFR =
1000
1360× 5
=
1000
= 6. 80 per woman
Again,
In Hilly Region,
ΣASFR = 182 + 308 + 400 + 305 + 206 + 110 + 65
= 1576

GREEN Health, Population and Environment Education Book-10 19