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52
mortality in childhood.
Age-Group Mortality.—The 387 deaths recorded last year were 53 in excess of the average
—unadjusted for the smaller number of births recorded during the past year. Below are given
the mortality rates for the principal age-group periods, from which it appears that the whole of
the increased mortality among males occurred at ages over three months and that among females
at ages exceeding one month.
Nett Mortality Rates.
Males. Females.
1911. 1906-10. 1911. 1906-10.
Under one month 40 88 43-45 28.28 31.71
Aged 1—3 months 22 11 25.94 27.60 22.26
Under three months 63 00 69.39 55.89 53.98
Aged 3—6 „ 33.51 22.69 20.87 18.90
„ 6—9 „ 24.12 16.21 18.18 12.82
„ 9—12 „ 19.43 14.26 24.91 10.79
Mortality by Causes.—An examination of the mortality rates (see below) from the groups of
causes of death shows at once that the increased mortality of last year was almost entirely due
to the "Common Infectious Diseases" (Group I. of Table VIII.) and the " Diarrhceal Diseases"
(Group II. of the same table).
Nett Mortality Rates.
Males. Females.
1911. 1906-10. 1911. 1906-10.
I. "Common Infectious Diseases" 12.73 7.13 14.14 6.74
II. " Diarrhœal Diseases" 38.87 23.34 57.23 19.56
III. "Tuberculous Diseases" 3.35 5.18 3.36 4.04
IV. "Developmental Diseases" 44.90 48.63 34.34 33.06
V. "Other Diseases" 29.49 29.18 14.14 26.99
All other Causes 10.72 8.43 10.10 6.74
The deaths from measles (19) were 11 in excess of the average, those from whooping cough
(21) 9 in excess, and those from the diarrhœal diseases (143) 80. The total excess of deaths
{100) from those three causes was equivalent to a mortality of 33 per 1,000, whereas the difference
between the total mortality recorded last year (129) and the average (104) was 25. The excess
of deaths from those diseases among males was equivalent to a mortality of 22, the total excess
of the average (see Table 30) being 25, and among females to a mortality of 45, the total excess
(same table) being 26. Excluding those three diseases altogether, the total mortality was 68 per
1,000 last year, or 14 less than the average (82), the mortality among males 88 (average, 94), and
that among females 48 (average, 70).
TABLE 33.
Infantile Mortality.
Special Areas.
Special Areas.
Insulæ.
1911.
Infantile Mortality.*
Births.
Deaths.
1911.
1910.
1906-10.
Ward.
"Hall Park"
115
12
104
80
128
V.
"North Wharf"
89
19
213
175
135
"Clarendon Street"
315
53
168
122
169
IV.
"Alfred Road "
152
26
171
102
119
III..
"Amberley Road"
83
15
180
125
124
I.
"Queen's Park
260
24
92
109
86
* Corrected rates.