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9
Table B.
(a) Decrease of death rates between the decennia 1861-70, 1871-80 and 1881-90.
Age Period.
Amount of decrease between
1861-70 and 1871-80.
Amount of decrease between
1871-80 and 1881-90.
Amount of decrease between
1861-70 and 1881-90.
Males.
Females.
Males.
Females.
Males.
Females.
Under 5
9.05
8.66
4.77
4.40
13.82
13.06
5—
1.95
2.12
1.49
.91
3.44
3.03
10—
.67
.62
.65
.56
1.32
1.18
15—
.77
.74
1.00
.78
1.77
1.52
20—
1.28
.76
1.51
1.06
2.79
1.82
25—
.73
.76
1.48
1.22
2.21
1.98
35—
.50
.52
1.68
.90
2.18
1.42
45—
.31
.44
1.50
.85
1.81
1.29
55—
.65
1.20
1.87
1.48
2.52
2.68
65—
2.75
.60
2.11
3.25
4.86
3.85
75 and upwards
7.70
5.21
7.45
9.24
15.15
14.45
(b) Percentage decrease of death rates between the decennia 1861-70, 1871-80 and 1881-90.
Age Period.
Decrease per cent. between
1861-70 and 1871-80.
Decrease per cent. between
1871-80 and 1881-90.
Decrease per cent. between
1861-70 and 1881-90.
Males.
Females.
Males.
Females.
Males.
Females.
Under 5
10.4
11.3
6.1
6.5
15.9
17.1
5—
20.8
24.0
20.1
13.5
36.7
34.2
10—
15.8
15.2
18.2
16.2
31.1
29.0
15—
13.2
14.5
19.8
17.9
30.4
29.8
20—
15.6
12.2
21.7
19.4
33.9
29.3
25—
6.7
8.6
14.6
15.2
20.3
22.5
35—
2.9
4.0
10.1
7.3
12.7
11.1
45—
1.2
2.4
5.9
4.7
7.0
7.0
55—
1.5
3.6
4.3
4.6
5.7
8.0
65—
3.3
.9
2.6
4.9
5.9
5.7
75 and upwards
4.2
3.2
4.2
5.8
8.2
8.8
In the Registrar General's supplementary report for the decennium 1861-70, a life table for
London was published, calculated by Dr. Farr's "short method." In order to show in its clearest form
the effect of the decreased mortality on the longevity of the population, a similar table has been
constructed for the period 1881-90. As the same method has been used, the results are strictly comparable.
The new table is given in two parts (Tables C and D). In Table C the survivors (lx) of
1,000,000 born of each sex are traced through life at each separate year up to 5 years of age, then at
quinquennial intervals up to 25, and at decennial intervals up to 85, the mean probability (px) of living
one year in each age-period, and the deaths (dx) occurring in each age-period, out of the survivors at
the beginning of the period, being shown in separate columns. In Table D the survivors of 509,078
males and 490,922 females born (these being the proportions of the two sexes in a million children
born in London in 1881-90) are similarly shown, and to these figures are added the future years of
life (Q,,) which will be lived by the lx survivors at each age in the table, and the expectation of life (Ex),
or the average future life time at each age.
Table C.
Life table for London, 1881-90.—Of 1,000,000 of each sex born, the number surviving at
several ages, and the deaths in each interval of age; also the mean probability of living a year in
each age interval—
Age.
Males.
Females.
N umbers
born, and
purviving
at age x.
Deaths in interval
following age x.
Mean probability
of living one
yearin the interva
following age x.
Numbers
born, and
surviving
at age x.
Deaths in interval
following age x.
Mean probability
of living one
year in t he interval
following age x.
X
lx
dx
Px
lx
dx
Px
0
1,000,000
163,922
.83608
1,000,000
138,281
•86172
1
836,078
62,764
.92493
861,719
60,148
•93020
2
773,314
24,413
.96843
801,571
24,912
•96892
3
748,901
15,316
.97955
776,659
15,611
•97990
4
733,585
10,586
.98557
761,048
10,656
•98600
5
722,999
21,114
.99409
750,392
21,510
•99420
10
701,885
10,187
.99708
728,882
10,471
•99711
15
691,698
13,861
.99596
718,411
12,733
•99643
20
677,837
18,203
.99457
705,678
15,354
•99561
25
659,634
54,644
.99139
690,324
45,531
•99320
35
604,990
84,070
.98515
644,793
69,616
•98864
45
520,920
110,627
.97641
575,177
91,023
•98292
55
410,293
138,906
.95951
484,154
128,230
•96970
65
271,387
146,988
.92496
355,924
167,114
•93857
75
124,399
98,322
.85535
188,810
139,609
•87417
85
26,077
26,077
.74092
49,201
49,201
•76618
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