2G2 
Age at Marriage and Duration of Life 
might be effected with the duration of life in women. The results are shown 
in Table XX. 
TABLE XX. 
Mean Duration of Life of Married Men beyond Age 46 by survivors of that age. 
Experience of Nev) South Wales, 1901 and 1902. 
Age at 
Marriage 
Deatlis 
after 
Age 46 
Total years 
lived after 
Age 40 
^lean Duration 
of life after 
Age 46 
Age at 
Marriage 
13eatlis 
after 
Age 46 
Total years 
lived after 
Age 46 
iVlt^dll l^UiabiOli 
of life after 
Age 46 
20 
222 
4290 
19-32 years 
33 
137 
3075 
22-45 years 
21 
342 
6595 
19-28 „ 
34 
158 
3152 
19-95 „ 
22 
358 
7021 
19-61 „ 
35 
136 
3407 
25-05 „ 
23 
336 
6510 
19-38 „ 
36 
109 
2409 
22-10 „ 
21t 
342 
6712 
19-63 „ 
37 
91 
1937 
21-29 „ 
25 
410 
7958 
19-41 „ 
38 
86 
1903 
22-13 „ 
26 
351 
6777 
19-31 „ 
39 
69 
1390 
20-14 „ 
27 
300 
5894 
19-65 „ 
40 
102 
2504 
24-55 „ 
28 
339 
6489 
19-14 „ 
41 
39 
821 
21-05 „ 
29 
241 
4990 
20-71 „ 
42 
52 
957 
18-40 „ 
30 
285 
5864 
20-58 „ 
43 
27 
483 
17-90 „ 
31 
158 
3223 
20-40 „ 
44 
35 
824 
23-54 „ 
32 
180 
4075 
22-64 „ 
i 
The correlation between age at marriage and duration of life beyond age 46 
was determined, and also the regression straight line. The following are the 
general results : 
Mean Age at Marriage 27-94414 years. 
Mean Duration of Life beyond Age 46 ? 20-2365 ,, 
, , „ . ,. (Age at Marriage 7'1415 „ 
btandard Deviation^ ° . „ _ .° , , 
(Duration of Life 1-4623 „ 
Correlation + -51973 ± -00703 
Coefficient of Regression + -10642 
Regression Straight Line (Origin at Age at Marriage 19 years. 
Unit x=l year), y = 19-2847 + -10642 x. 
The statistics and regression straight Hue will be found plotted on Fig. 10. 
Here we see that early marriage is again apparently unfavourable to longevity 
in man, though not so pronounced as in woman, as perhaps a jyriori might have 
been suspected. It has been suggested that two causes operate against longevity 
in excessively fertile women, viz. the physical strain in bearing and the mental 
strain in rearing large families. The latter factor only is operative in the case 
of males, and probably contributes to the shortening of the duration of life in 
men marrying at the early ages. Again we see that the statistics divide into 
two well-defined series, the demarcation being at age 28 at marriage. Up to 
and inclusive of that age the results are remarkably uniform, the mean of the 
mean durations of life beyond age 46 being 19 41 years. For marriages contracted 
beyond age 28 the results are rather irregular, but distinctly exhibit an increase 
