GRR and NRR (cont.)
The Net Reproduction Rate (cont.)
Exercise 4
The table shows the age-specific fertility rates for Kuwait in 1982, as well as the life table person years for women in reproductive age groups. Use these to calculate the NRR.
| Age group | ASFR | Life table person-years |
|---|---|---|
| x - x+4 | 5fx | 5Lx |
| 15 - 19 | 0.066 | 4.766 |
| 20 - 24 | 0.212 | 4.741 |
| 25 - 29 | 0.255 | 4.707 |
| 30 - 34 | 0.213 | 4.668 |
| 35 - 39 | 0.159 | 4.619 |
| 40 - 44 | 0.078 | 4.556 |
| 45 - 49 | 0.033 | 4.467 |
The correct answer is: 2.32
| Age group | Mid point | ASFR | Grp yrs | Interval births | Life table person-years |
Net fertility rate |
|---|---|---|---|---|---|---|
| x - x+4 | a | 5fx | Y | Y*5fx | 5Lx | 5Lx*5fx |
| 15 - 19 | 17.5 | 0.066 | 5 | 0.332 | 4.766 | 0.316 |
| 20 - 24 | 22.5 | 0.212 | 5 | 1.062 | 4.741 | 1.006 |
| 25 - 29 | 27.5 | 0.255 | 5 | 1.274 | 4.707 | 1.199 |
| 30 - 34 | 32.5 | 0.213 | 5 | 1.066 | 4.668 | 0.995 |
| 35 - 39 | 37.5 | 0.159 | 5 | 0.794 | 4.619 | 0.733 |
| 40 - 44 | 42.5 | 0.078 | 5 | 0.389 | 4.556 | 0.354 |
| 45 - 49 | 47.5 | 0.033 | 5 | 0.167 | 4.467 | 0.149 |
| TFR | 5.08 | Net sum | 4.75 | |||
| GRR = TFR / 2.05 | 2.48 | NRR | 2.32 | |||
Please attempt the answer.
Well done, 2.32 is correct.
| Age group | Mid point | ASFR | Grp yrs | Interval births | Life table person-years |
Net fertility rate |
|---|---|---|---|---|---|---|
| x - x+4 | a | 5fx | Y | Y*5fx | 5Lx | 5Lx*5fx |
| 15 - 19 | 17.5 | 0.066 | 5 | 0.332 | 4.766 | 0.316 |
| 20 - 24 | 22.5 | 0.212 | 5 | 1.062 | 4.741 | 1.006 |
| 25 - 29 | 27.5 | 0.255 | 5 | 1.274 | 4.707 | 1.199 |
| 30 - 34 | 32.5 | 0.213 | 5 | 1.066 | 4.668 | 0.995 |
| 35 - 39 | 37.5 | 0.159 | 5 | 0.794 | 4.619 | 0.733 |
| 40 - 44 | 42.5 | 0.078 | 5 | 0.389 | 4.556 | 0.354 |
| 45 - 49 | 47.5 | 0.033 | 5 | 0.167 | 4.467 | 0.149 |
| TFR | 5.08 | Net sum | 4.75 | |||
| GRR = TFR / 2.05 | 2.48 | NRR | 2.32 | |||
The formula is:
That is not the right answer. Have you used the correct formula?