YEAR OF OCCURRENCE
Information contained in the preceding chapters of this publication refer to deaths registered during the 2012 calendar year. In this chapter, death statistics are based on a year of occurrence, that is, the year in which the death actually occurred, rather than the year it was registered. The presentation of year of occurrence data in this publication facilitates international comparisons.
There are a proportion of deaths that occur in a given calendar year which are not registered until subsequent years. The international standard for publishing on a year of occurrence basis is to include deaths registered within the relevant occurrence year, and deaths for that same occurrence year which are registered the year immediately following. For example, deaths occurring in 2011 that have been registered in both 2011 and 2012 are presented below.
Analysis of deaths in Australia has shown that the number of deaths registered after the second year is not significant; that is, there is a very small number of deaths registered after the second year of death.
Year of occurrence data allow for seasonal analysis, and data are not distorted by the effects of late registrations or changes in time lags in processing registrations. In those countries where registration systems are complete and timely, there is not a significant difference between the number of deaths derived on a year of registration basis and those on a year of occurrence basis.
For Australia, approximately 95% of deaths registered in a particular year occurred in that year. However, variations can occur in certain subsets of the population and for particular causes of death. For instance, while 95.0% of the total 146,623 deaths that were registered in 2011 occurred in the same year, only 87.4% of the 2,561 deaths of Aboriginal and Torres Strait Islander people, and 91.3% of 9,219 deaths due to External causes registered in 2011 occurred in that year. More detailed data for specific causes or population groups are available from the ABS on request.
Comparison of Year of Occurrence and Year of Registration data for 2011
The following table shows the number of deaths occurring in 2011 which were registered in 2011 and 2012. Of the deaths of Aboriginal and Torres Strait Islander people which occurred in 2011 (and were registered in either 2011 or 2012), 12.6% were registered late, (i.e. they were registered in 2012). This compared with 5.0% for the total population.
A late registration is defined as a death which is registered after the end of the year in which the death occurred. For example, a death which occurred in 2011, but registered in 2012 or later is classified as a late registration.
8.1 SELECTED CAUSES: 2011 Year of Occurrence(a)(b)
Registered in 2011
Registered in 2012
Total as at 2012
|Cause of death and ICD-10 code |
ABORIGINAL AND TORRES STRAIT ISLANDER PEOPLE(c)
|All Causes |
|All Causes(e) |
|Certain infectious and parasitic diseases (A00-B99) |
|Neoplasms (C00-D48) |
|Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism (D50-D89) |
|Endocrine, nutritional and metabolic diseases (E00-E90) |
|Mental and behavioural disorders (F00-F99) |
|Diseases of the nervous system (G00-G99) |
|Diseases of the circulatory system (I00-I99) |
|Diseases of the respiratory system (J00-J99) |
|Diseases of the digestive system (K00-K93) |
|Diseases of the skin and subcutaneous tissue (L00-L99) |
|Diseases of the musculoskeletal system and connective tissue (M00-M99) |
|Diseases of the genitourinary system (N00-N99) |
|Certain conditions originating in the perinatal period (P00-P96) |
|Congenital malformations, deformations and chromosomal abnormalities (Q00-Q99) |
|Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99) |
|External causes of morbidity and mortality (V01-Y98) |
|(a) All causes of death data from 2006 onward are subject to a revisions process - once data for a reference year are 'final', they are no longer revised. Affected data in this table are 2011 (revised) and 2012 (preliminary). See Explanatory Notes 29-33 and Technical Notes, Causes of Death Revisions, 2006 in Causes of Death, Australia, 2010 and Causes of Death Revisions, 2010 and 2011 in this publication. |
|(b) See Explanatory Notes 81-99 for further information on specific issues relating to 2012 data. |
|(c) See Explanatory Notes 68-76 for further information on interpreting data relating to deaths of Aboriginal and Torres Strait Islander people. |
|(d) Includes total deaths for Australia. |
|(e) Includes deaths due to Diseases of the eye and adnexa (H00-H59), Diseases of the ear and mastoid processes (H60-H95) and Pregnancy, childbirth and the puerperium (O00-O99). |