BIBLIOGRAPHIC INPUT SHEET TEMPORARY Patterns of mortality ...

Chapter X. CongenitalAnomalies
189
Fia. 96. Mortality of Infants with Congenital
Anomalies as Underlying or Associated Causes or
as Minor Anomalies in 15 Projects.
DEATHS PER 100,000 LIVE BIRTHS
0 200
400 600 800
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ANOMALY
vestigation was conducted, a publication of
WHO (1971) provided the numbers of
deaths in 1967 clue to congenital anomalies
as underlying causes in infants, on the
basis of the categories of the 1955 Revision
of the International Classification,of Diseases.
Tile death rates per 100,000 live
births for those six countries, along with the
corresponding rates as underlying causes
found in eight projects of the Investigation,
are as follows:
WHO data (1067)
Investigation
Canada 403.3 Sherbrooke 595.2
Chile 356.9 Chile project 403.9
Colombia 200.9 Cali 279.6
Cartagena
Medellin 329.6 355.7
El Salvador 78.6 El Salvador project 383.6
Mexico 160.6 Monterrey 432.0
United States 330.4 California project 335.3
With the exception of the California project,
the death rates in the project of the
Investigation were higher and in several
cases much higher than those in the countries
in which they were situated. This is
to be expected since incompleteness of registration,
which is p'obably even greater in
rural areas than in populations studied in
the Investigation, would affect the quality
of such data for the country. In such areas
)roduLcts of pregnancy affected by serious
anomalies, even when they are born alive
and live a short time, may often be reported
as fetal deaths. In the United States reporting
of anomalies as underlying causes is
probably quite complete, as was indicated
by the finding in the California project
(335.3 deaths per 100,000 live births) which
was practically the same as the rate for the
country (330.4).
In the 1955 Revision of tile International
Classification,of Diseases (WHO, 1957) the
Section on Congenital Malformations (lid
not include certain conditions that were
later added to Section XIV (Congenital
Anomalies) in the 1965 Revision. One example
is Down's disease, which was for­
,nerly included in the section on mental disorders.
Also in tile Investigation, the con­