Australian Institute of Health and Welfare (2022) Deaths in Australia, AIHW, Australian Government, accessed 06 July 2022.
Australian Institute of Health and Welfare. (2022). Deaths in Australia. Retrieved from https://pp.aihw.gov.au/reports/life-expectancy-death/deaths-in-australia
Deaths in Australia. Australian Institute of Health and Welfare, 09 June 2022, https://pp.aihw.gov.au/reports/life-expectancy-death/deaths-in-australia
Australian Institute of Health and Welfare. Deaths in Australia [Internet]. Canberra: Australian Institute of Health and Welfare, 2022 [cited 2022 Jul. 6]. Available from: https://pp.aihw.gov.au/reports/life-expectancy-death/deaths-in-australia
Australian Institute of Health and Welfare (AIHW) 2022, Deaths in Australia, viewed 6 July 2022, https://pp.aihw.gov.au/reports/life-expectancy-death/deaths-in-australia
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Leading causes of death is a useful measure of population health. It is of most value when making comparisons over time or between population groups. Changes in the pattern of causes of death can result from changes in behaviours, exposures to disease or injury, and social and environmental circumstances, as well as from data coding practices.
Figure 3.1 shows the number of male and female deaths in 2020 contributing to the top 5 causes. The leading cause of death for males was coronary heart disease, accounting for 10,040 (12%) deaths, followed by dementia including Alzheimer’s disease (5,250; 6.2% of deaths). Dementia including Alzheimer’s disease was the leading cause of death for females, accounting for 9,325 (12%) deaths, followed by coronary heart disease (6,547; 8.5% of deaths). Cerebrovascular disease (which includes stroke) and lung cancer were among the top 5 leading causes of death in Australia in 2020 for both males and females. Females account for more deaths due to cerebrovascular disease, whereas males accounted for more deaths due to lung cancer. Among females, breast cancer was the 5th leading cause of death, whereas for males it was prostate cancer. For more leading causes of death by sex see Table S3.1.
Source: AIHW National Mortality Database (Table S3.1).
As well as differences by sex, the leading causes of death also vary by age. Chronic diseases feature more prominently among people aged 45 and over, while the leading causes of death among people aged 1–44 are external causes, such as accidents and suicides (Figure 3.2).
Among infants, perinatal and congenital conditions (which includes respiratory and cardiovascular disorders specific to the perinatal period, birth trauma and congenital malformations) caused the most (80%) deaths. See Health of mothers and babies.
Land transport accidents were the most common cause of death among children aged 1–14 (12%). Suicide was the leading cause of death among people aged 15–24 (38%), followed by land transport accidents (19%). For people aged 25–44, it was also suicide (22%), followed by accidental poisoning (12%).
Coronary heart disease was the leading cause of death for people aged 45–64 and people aged 75–84. For people aged 65–74, the leading cause of death was lung cancer followed by coronary heart disease, and for people aged 85 and over, it was dementia including Alzheimer’s disease, followed by coronary heart disease.
Heart failure = Heart failure and complications and ill-defined heart disease.
Source: AIHW National Mortality Database (Table S3.2).
Leading underlying causes of death are determined by grouping specific causes of death and counting the number of deaths assigned to each cause group. Over 14,000 specific causes of illness, injury and death are presented in the International Statistical Classification of Diseases and Related Health Problems, 10th Revision (ICD-10). These causes can be grouped in a way that is meaningful for public health purposes.
A common grouping is by ICD chapters which are broad categories arranged according to the type of disease, the body system affected by the disease or the circumstances causing death. Each chapter is further divided into blocks of related diseases. Australian cause of death data by ICD-10 chapters and selected causes of death are published in the AIHW General Record of Incidence of Mortality (GRIM) books.
For leading underlying cause of death analysis, information needs to be more specific than ICD chapters and blocks. There is no standard method for grouping causes, however, the AIHW follows the recommendations of the World Health Organization (WHO) (Becker et al. 2006) with minor modifications to suit the Australian context. This grouping is a mix of ICD chapters, blocks and specific diseases to maximise information, separate out ill-defined causes and highlight health priority areas.
The leading underlying causes of death presented here are classified using an AIHW-modified version of Becker et al.
Becker R, Silvi J, Ma Fat D, L’Hours A & Laurenti R 2006. A method for deriving leading causes of death. Bulletin of the World Health Organization 84:297–304.
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