How is migration derived? (cont.)

Exercise

interaction Find the 10-year survival rates for the Abridged Life Table from S08 Session: Life Tables II. On Table 1, enter the correct values on the Sx column. You can reveal the answer by pressing the button underneath.

Table 1: A typical mortality abridged life table.

x nLx Tx Sx
0 99258 7756261  
1 396311 7657003
5 494842 7260692
10 494388 6765850
15 493808 6271462
20 493080 5777654
25 492253 5284574
30 491110 4792321
35 489335 4301211
40 486523 3811876
45 481798 3325353
50 473793 2843555
55 460470 2369762
60 438933 1909292
65 407120 1470359
70 361495 1063239
75 297500 701744
80 214640 404244
85+ 189604 189604
x nLx Tx Sx
0 99258 7756261  
1 396311 7657003 0.997617
5 494842 7260692 0.997910
10 494388 6765850 0.997354
15 493808 6271462 0.996851
20 493080 5777654 0.996005
25 492253 5284574 0.994072
30 491110 4792321 0.990660
35 489335 4301211 0.984597
40 486523 3811876 0.973835
45 481798 3325353 0.955732
50 473793 2843555 0.926424
55 460470 2369762 0.884140
60 438933 1909292 0.823577
65 407120 1470359 0.730743
70 361495 1063239 0.593756
75 297500 701744 0.270190
80 214640 404244
85+ 189604 189604

NB The first and last boxes are special cases. In the first box the denominator must be the sum of the 0-1 and 1-4 populations. In the last box the Tx column should be used for the calculation, as mentioned on page 14, because an open-ended population is involved.

Source: TBC

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