494 Correlation between Vaccination and Smallpox 
From Tables I., XXIV. and XXV. we get 
•3150, 
Prs = 
V(l-rV)(l-''=^^) 
If we take the age division at 20 or 30 years we get the four Tables XXVI. 
XXIX. 
TABLE XXVI. 
All Gases, 1901—2. 
Under 30 
Over W 
Totals 
Unvaccinated... 
1893 
385 
2278 
Vaccinated or doubtful 
1403 
5978 
7381 
Totals 
3296 
6363 
9659 
r= +-821. 
TABLE XXVIL 
All Cases, 1901—2. 
Recoveries 
Deaths 
Totals 
Under 
2658 
638 
3296 
Overdo 
5372 
991 
6363 
Totals 
8030 
1629 
9659 
r=- -0904. 
Whence we deduce 
JV^ = --4246, r^^ = + -821, 
^,-, = -•0178. 
- -0904, 
TABLE XXVIII. 
All Cases, 1901—2. 
Under 30 
Over 30 
Totals 
Unvaccinated 
2137 
141 
2278 
Vaccinated or doubtful 
4018 
3363 
7381 
Totals 
6155 
3504 
9659 
r= + -671. 
