Dødsårsaker 1996 - SSB

Norges offisielle statistikk Dødsårsaker 1996
The causes of death are coded in accordance with the
detailed list in the International Statistical
Classification of Diseases and Related Health Problems.
Tenth Revision. Volume 1 (World Health Organization,
Geneva 1992). Rules and guidelines for mortality
coding are printed in ICD-10, Volume 2 (WHO, Geneva
1993).
It was agreed by the 6th Decennial International
Revision Conference that the cause of death for
primary tabulation should be designed by the
underlying cause of death. The underlying cause is
defined as:
"(a) the disease or injury which initiated the train of
morbid events leading directly to death, or
(b) the circumstances of the accident or violent which
produced the fatal injury".
When more than one condition is entered on the
certificate, the condition recorded alone on the lowest
used line in part I of the certificate is usually the
underlying cause of death used for tabulation.
However, the General Principle states that the
condition at the lowest used line in part I should only
be selected if it could have given rise to all the
conditions entered above it, i.e. rules and guidelines
may result in the selection of another condition as
underlying cause of death.
The causes of death statistics divergence at some point
from 1CD- 10 :
Categories are added to R99 (Other ill-defined and
unspecified cause of mortality);
R99.0 Cause of death cannot be stated (physician
or other expert cannot state the cause of
death)
R99.8 Cause of death not entered (certificate or
other document have not information on
causes of death, i.e. document from foreign
counties)
R99.9 No information (the death is recorded in the
Central Population Register and not
reported to the causes of death statistics)
Fracture of femur where external circumstances is not
entered, unspecified fall (W19) is selected as
underlying cause. According to 1CD-10 fracture with
circumstances unknown or unspecified should have
accidental exposure to unspecified factor (X59) as
underlying cause, ref. ICD-10, Volume 3 (1994) p. 600.
The publication NOS C 490 Causes of Death 1995 give
survey on the points the causes of death statistics
divergence from the Norwegian and the English edition
of the ICD-9. The causes of death statistics used
Norwegian edition of ICD-9 in the period 1986-1995,
and in the period 1969-1985 the Norwegian edition of
1CD-8 were used.
4. Change of Classification
From 1996 the causes of death statistics are classified
and coded in accordance with the detailed list in the
International Statistical Classification of Diseases and
Related Health Problems, Tenth Revision. The ICD is a
variable-axis classification, developed by William Farr
and resulted in the classification prepared by Jacques
Bertillon in 1893; The Bertillon Classification of Causes
of Death. The pattern from William Farr can be
identified in the chapters of ICD-10. In place of the
purely numeric coding system of previous revisions,
the Tenth Revision uses an alphanumeric code with a
letter in the first position. The classification is divided
into 21 chapters. Four chapters (I, II, XIX and XX) use
more than one letter in the first position of the block.
Chapter I-XVIII releate to diseases, other morbid
conditions, and sympthoms and ill-defined conditions.
Chapter XX covers external causes of mortality.
Chapter XIX (S00-T98) is not used for underlying
cause and chapter XXI (Z00-Z99) is not used in
mortality coding.
It is difficult to make comparisons over time on causes
of death statistics at a detailed level, partly due to loss
of equivalence between 1CD-10 and earlier revisions
and partly to changes in rules for selection of
underlying cause. The number of categories at 4th level
is almost doubled from the 9th to 10th revision (12 420
codes) and there is no simple relation between the
codes in the two revisions. World Health Organization
has published a translator (Translator, Ninth and
Tenth Revision, WHO, Geneva 1997) were it is
underlined that only 2 200 codes are unique in both in
both 9th and 10th revision.
The European ICD-10 Causes of Death Short-list,
prepared by Eurostat, cover 65 aggregated groups with
codes from 1CD-8, ICD-9 and ICD-10 (appendix B).
5. Remarks to the tables/
Some main results
5.1. Remarks to the tables
Table 1 contains deaths by underlying cause of death
according to ICD-10's detailed list with four-character
categories, by sex and age. Codes between V01-W34
are only published at three-character categories.
Table 2 gives multiple causes of death; deaths by
underlying and other events and conditions according
to the European 1CD-10 Short-list.
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