Recognising inaccuracies in Australian suicide and 'hidden suicide' data.

OBJECTIVE: To examine the effects of revision of Australian mortality statistics every year since 2007 on numbers and rates of suicide and 'hidden suicide'. METHOD: Nine months after the end of each year, the Australian Bureau of Statistics releases preliminary statistics concerning deaths registered in that year, together with revised and finalised data regarding previous years. Numbers and rates of suicide and of deaths coded to selected categories of accidental, undetermined and unknown cause deaths were tabled. RESULTS: Upward revision of suicide and accidental drug poisoning death numbers, three years after first release, show that true rates are substantially higher than initially released data suggested. Concomitant downward revision of rates of undetermined and unknown cause deaths supports evidence that at first release some suicides are coded to these categories. CONCLUSIONS: Australia's finalised suicide data are likely to be more accurate than equivalent data from nations that do not revise mortality data. More comprehensive investigation (including verbal or psychological autopsy) in doubtful cases in Australia and elsewhere would probably lead to reported suicide rates being higher.

Unanticipated Changes in Drug Overdose Death Rates in Canada During the Opioid Crisis.

Escalating drug overdose death rates in Canada are of ever-increasing concern. To better understand the extent of this health threat, we obtained mortality statistics and population figures for the years 2000 to 2020, and examined rates of overdose deaths, coded (using ICD-10) as accidental, suicide or "undetermined intent." The drug deemed as primarily responsible for the death was categorized as opioid, non-opioid, or unspecified. Age patterns of drug deaths were graphed. Joinpoint analysis was used to test the significance of changes in death rates. Accidental opioid and stimulant overdose death rates in Canada have climbed faster since 2011, though not as high as corresponding US rates. Unknown cause death rates have increased. However, opioid and non-opioid suicide rates have decreased significantly since 2011, and there have been fewer drug deaths of undetermined intent. Increased attention to the possibility that some suicides are being misclassified is warranted.

Drug overdose death rates in different countries: Who should be alarmed?

OBJECTIVES: This study aims to assess how many nations, in addition to the United States and Canada, report alarmingly high drug overdose death rates, and to compare how those rates have changed. CONCLUSIONS: Drug overdose death rates exceed four per 100,000 in over 10% of the world's nations, including Libya (where rates are increasing) and in Russia (where rates have fallen). A comparison of data from five well-resourced nations with high drug death rates showed recently accelerated and alarming increases in rates in the United States and Canada (attributed to influx of fentanyl, plus increased stimulant use). A reported recent fall in Canada's drug suicide rate may be attributable to misclassification of some suicides as accidents. There is an urgent need to ensure accuracy and better understanding concerning drug overdose deaths and how to prevent them.

Spain's suicide statistics: do we believe them?

PURPOSE: There is a widespread belief that suicides around the world are under-counted. A substantial proportion of suicides may have been inappropriately registered as accidental or of undetermined cause or intent. There is reason to explore to what extent low suicide rates in some nations could be partly attributable to under-counting. METHODS: Mortality statistics of most countries are available on-line. Numbers of suicide deaths in Spain, and in England and Wales (E & W), in male and female 5-year age groups, in each year between 2014 and 2018, were documented, along with deaths coded to ICD-10 accident or 'undetermined death' categories. Crude mortality rates were calculated using official population figures. Single year suicide, undetermined death, and non-transport accidental death rates of 12 other nations were calculated. RESULTS: Spain's crude suicide rate per 100,000 remains low (7.89) compared to other nations; its event of undetermined intent (EUI) death rate was 0.09 (contrasting with E & W's 1.74). Its accidental poisoning rate is much lower than that of E & W. The study showed much higher rates of ill-defined/unknown cause deaths in late life in Spain (both genders) than in E & W, and age-associated increases in accidental drowning rates parallel with increased suicide by drowning. CONCLUSIONS: Reportedly low suicide rates in Spain could be partly attributable to increased rates of 'hidden suicide' (accidental drowning, male accidental poisoning, and possibly ill-defined/unknown cause deaths, but not EUIs). It would be appropriate (and not just in Spain) to increase numbers of verbal and/or forensic autopsies in questionable 'undetermined' cases.

Undercounting of suicides: Where suicide data lie hidden.

ABSTRACT The suicide rates officially reported by most countries are widely believed to be lower than actual rates, attributable partly to inaccuracy of registration of deaths and misclassification of cause of death. In this review paper, we discuss under-counting of deaths and of suicides, referring to findings from international research. We then describe the three main ICD-10 cause of death categories that possibly harbour 'hidden suicides': ill-defined or unknown causes of death, events of undetermined intent (EUI), and accidental deaths. We used the 2017 Australian mortality statistics to illustrate these three categories. The World Health Organization (WHO) data and international research show (1) that mortality data provided to the WHO by a large number of its Member States are of questionable quality and not timely; and (2) substantial variations among countries in rates of suicide, ill-defined or unknown deaths, EUIs, and accidental deaths (notably, poisoning). Accurate reporting of suicides is needed to advance research on suicide prevention and develop more effective suicide prevention programmes. Nations should endeavor to obtain, publish and analyse data regarding annual rates of deaths coded as of ill-defined/unknown cause, EUI, and accidental poisoning and other relevant types of accident.

Wearable technology to assess bradykinesia and immobility in patients with severe depression undergoing electroconvulsive therapy: A pilot study.

The psychomotor retardation that may be seen in major depression represents an interesting parallel to bradykinesia, a core feature of Parkinson's disease. Psychomotor retardation has been correlated with the severity of depression and is a predictor of response to electroconvulsive therapy (ECT). Psychomotor retardation has typically been assessed by subjective clinical judgement including clinical rating scales. Gross activity levels have also been measured with actigraphy previously. The Parkinson's KinetiGraph (PKG) was developed to assess bradykinesia, dyskinesia and tremor in Parkinson's disease and allows for an objective assessment of motor symptoms over time. It has not been used previously to assess motor symptoms in depression. The aim of the current pilot study was to use the PKG to objectively measure both bradykinesia and immobility in depressed inpatients undergoing ECT before, during and at the end of therapy and review correlations with depressive symptomatology and treatment response. The majority of patients (9/12) had PKG defined bradykinesia at baseline and 7/9 of these improved with ECT. All patients with bradykinesia who remitted clinically demonstrated improvements in bradykinesia scores. PKG defined immobility was present at baseline in 11/12 total patients and improved in the majority of these patients (9/11) post ECT. Correlations between clinically assessed melancholia and PKG measures were significant (r = 0.701, p 0.011 at baseline to rs = 0.655, p 0.021 at end). A strong association between bradykinesia and immobility scores and depression severity was not seen. The PKG is a potentially useful wearable technology to objectively assess motor symptoms in depression.

A comparison between the age patterns and rates of suicide in the Islamic Republic of Iran and Australia.

BACKGROUND: When planning interventions aimed at preventing suicide, it is important to consider how socioeconomic and cultural factors may affect suicide rates. There has been variability in the accuracy of recording suicide deaths, leading to varying levels of underestimation. Social, cultural and religious elements affect whether deaths resulting from suicide are reported as such and those responsible for reporting a death may avoid providing information that would suggest the death was due to suicide. AIMS: The aim of this study was to document Iranian suicide patterns in 2006-2010 and 2011-2015, compare them with those in a "Western" country (Australia) and explore whether differences point to factors that affect suicide rates. METHODS: Data were obtained from Iranian and Australian national statistics offices. RESULTS: Peak Iranian male suicide rates were in young adulthood. There was a modest increase between the 2 quinquennials studied. Australian male rates were much higher, with age peaks in middle age and very late life. From age 30, the female rate was twice as high in Australia, graphs of the age patterns being relatively flat in both countries. Male:female ratios were 2.34 (Islamic Republic of Iran) and 3.25 (Australia). CONCLUSION: The suicide rate in the Islamic Republic of Iran is low, as in most other predominantly Muslim countries. Higher rates in youth are of concern. A case-control psychological autopsy study comparing cases in Iran and Australia could help answer questions about suicide causation.

Suicide and 'hidden suicide': a comparison of rates in selected countries.

OBJECTIVE: To review rates of suicide and 'hidden suicide' in New Zealand (NZ), Australia, Ireland and Spain. METHOD: Using estimated population figures and online cause-of-death data from four countries, rates of suicide and 'hidden suicide' in 2014-2016 were calculated and compared. RESULTS: Age patterns and rates of suicide and 'hidden suicide' differ between these countries. The male suicide rate progressively rises across the age range in Spain but becomes lower in late life in Ireland. The male patterns in NZ and Australia are bimodal; male and female rates decrease in late life, with NZ lower than Australia. Maori age patterns are downward-sloping. Suicide rates of young Maori considerably exceed those of young non-Maori in NZ. CONCLUSIONS: The NZ youth suicide peaks are attributable to high rates of Maori youth suicide. Rates of 'hidden suicide' are relatively low in the four countries.

An Australian study of delusional disorder in late life.

OBJECTIVES: There is a paucity of available research to guide clinical practice in delusional disorder (DD), particularly in late life. This study aimed to evaluate antipsychotic use and treatment outcomes in patients with DD aged 65 years and older. Secondarily, we sought to examine associated clinical features and socio-demographic variables. DESIGN AND SETTING: This descriptive study reviewed all consecutive cases of DD referred to an Australian old age psychiatry service over a 12-year period. Fifty-five patients were assessed in the inpatient and/or community setting, with data verified from a review of all individual medical records. MEASUREMENTS: Data were collected with respect to antipsychotic use, outcomes, and clinical features. Socio-demographic variables of DD cases were compared to a non-matched comparison group (n=278) and an age and gender matched comparison group with a 1:1 ratio (n=55). RESULTS: The predominant type of DD was persecutory (87%). Non-prominent hallucinations were experienced by 18%, and depressive symptoms occurred in 22%. There was a statistically significant association between having DD and social isolation (χ2= 11.04 (DF=1) p<0.001; McNemar's test p<0.001). Atypical antipsychotic medication was prescribed in 32 cases, with follow-up permitted in 51 of the 55 cases (mean duration 36.6 months). Sustained recovery occurred in 20%, and improvement in an additional 35% of the study sample. Four patients subsequently developed dementia, and two developed mild cognitive impairment. CONCLUSIONS: Clinical improvement, including sustained recovery, occurred in more than half of those with late life DD. The majority of those who improved (96%) received atypical antipsychotics.

Mental health of animal hoarders: a study of consecutive cases in New South Wales.

Objective The aim of this study was to review animal hoarding cases referred to the Royal Society for the Prevention of Cruelty to Animals (RSPCA) in New South Wales (NSW) to examine mental health factors that influence the development of animal hoarding and to consider strategies for dealing with such cases. Methods Data were gathered by RSPCA inspectors regarding consecutive cases referred to the agency over 2 years. Result Details were provided about animals and 50 identified hoarders (11 male, 39 female; mean age 57 years) on 48 properties. The mean number of animals per case was 53 (range 6-300). Fifteen participants (30%) were known to have had involvement with mental health or social services. Mental health factors appeared to contribute to animal hoarding in well over 50% of cases. Severe and moderate squalor were observed in 52% and 21% of dwellings assessed respectively, many with accumulated rubbish. Conclusions Animal hoarding is largely attributable to psychological and psychiatric problems. It is recommended that clinical services work alongside animal welfare inspectorates, assessing (and, where appropriate, treating) such problems. What is known about the topic? Animal hoarding is believed to be partly attributable to the hoarders having psychiatric or psychological problems, but relevant mental health assessment of hoarders is not usually arranged. Recidivism after removal of animals is nearly 100%. What does this paper add? The study confirms that animal hoarders commonly have mental health issues. However, RSPCA inspectors are not expected to screen for such issues or refer cases to mental health clinicians. What are the implications for practitioners? There is good reason to develop clinical services to help animal hoarders deal with their psychological or psychiatric problems.

Differences between patterns of suicide in East Asia and the West. The importance of sociocultural factors.

OBJECTIVE: To compare suicide rates and characteristics in East Asian and Western countries. METHOD: Data from five East Asian jurisdictions and five English-speaking Western countries were obtained from national offices responsible for collection of statistics. Data were graphed to demonstrate differences between East Asian and Western age patterns of suicide. Relevant literature was reviewed, including observations concerning suicide rates in various non-English-speaking European countries. RESULTS: Age patterns and rates of suicide differ between East and West and across time, but with Japan's and the United States patterns progressively becoming more similar. CONCLUSIONS: Sociocultural factors affect suicide patterns and rates; choice of method and cohort effects affect rates. Strategies for prevention of suicide should give attention to culture-related precipitants of suicide.

A longitudinal comparison of age patterns and rates of suicide in Hong Kong, Taiwan and Japan and two Western countries.

Suicide data relating to 1979-2014 were obtained from three East Asian jurisdictions (Taiwan, Hong Kong, Japan) and two 'Western' countries (Australia, New Zealand). Rates and age patterns of suicide have changed markedly since 1979. Graphs of these patterns largely remained either upward-sloping, bimodal or flat (uniform) over the 36 years, male commonly differing from female, and East Asian patterns more like each other than those of the Western countries. Japan's male middle-aged suicide rate reached a peak in 1999-2003, which, like increased rates among working age males in Hong Kong and Taiwan, has been attributed largely to consequences of Asian financial crises. Male to female ratios of suicide rates have remained higher in the Western countries, but late life suicide rates have decreased to varying extents in all five jurisdictions. Identifying reasons for differences between jurisdictions in their suicide rates and patterns at particular times, and over time, is likely to point to factors (period, cohort, psychosocial or cultural) that protect against or foster suicidal ideation. This avenue of research may assist in identifying ways of preventing suicide.

Awareness of Suicide Risk and Communication Between Health Care Professionals and Next-of-Kin of Suicides in the Month Before Suicide.

Based on psychological autopsy data, the study compared awareness of suicide risk in the deceased among next-of-kin (NOK) and health care professionals (HCPs), and communication between these two groups in the month before death. The NOKs had significantly more knowledge about the decedent's suicide warning signs than the HCPs (90.5% vs. 44.6%). Contact between NOK and HCP was initiated more often by the family than the HCPs (29.4% vs. 5.9%). The study found communication gaps between HCPs and NOK and stresses the need for suicide prevention strategies strengthening communication between these two groups.

Alcohol-use disorders and suicide: Results from a psychological autopsy study in Australia.

INTRODUCTION: People who die by suicide have a higher risk of an alcohol-use disorder (AUD) at the time of death. The present study aims to compare 1) suicide cases with and without AUD, and 2) suicide and sudden-death controls with AUD. METHODS: The psychological autopsy method was utilized to investigate suicide and sudden death in Australia (QLD and NSW). Initial information was gathered from coroners' offices. Potential informants were approached and semi-structured interviews were conducted. Univariate and multivariate logistic regression were applied. RESULTS: People with AUD who died by suicide were significantly more likely to have another substance-use disorder, history of suicide attempt, recent serious arguments with spouse/partner and other family members, been unfaithful to partner/spouse, be victims of a crime, and were less likely to be from a non-English speaking background. They were also younger and had higher levels of aggression compared to non-AUD suicides. AUD suicides were more likely to have mood disorders, previous suicide attempt, expressing hopelessness, higher scores in aggression towards self, romantic relationship breakup, and serious arguments with other family members than AUD sudden deaths. Aggressive behavior, having another substance-use disorder, and history of serious arguments with family members remained significant in the final model comparing suicides with and without AUD. CONCLUSION: Our findings support that aggressive behavior, comorbidity with other psychiatric disorders as predisposing factors, and recent interpersonal conflicts such as breakup and family conflicts can trigger suicide in people with AUD. There is a need for proper diagnosis, risk assessment, and treatment in suicidal people with AUD.

Changes in age patterns of suicide in Australia, the United States, Japan and Hong Kong.

The patterns of association between age and suicide rate vary by country, subpopulation and gender, and over time. To shed light on factors associated with these differences, we analysed suicide data from four populations, two 'Western' (Australia, the United States [US]) and two Asian (Japan and Hong Kong). We computed suicide rates in five-year age-groups (between 10 and 14 years and 85+ years) for men and women separately, and present graphical representations of the age patterns during selected five-year periods. Rates and age patterns differed markedly, as did gender patterns except in Hong Kong. In 1964-8, male suicide rates in Australia and US were represented by upward-sloping graphs, whereas in Japan the pattern was bimodal. By 1979-83, male patterns in Australia and US were bimodal, but Japan's was trimodal, including a middle-age peak reached in 1994-98. In contrast, female age patterns in the Western countries were shallowly convex or uniform, while in Hong Kong and Japan the upward-sloping graphs became, over time, less steep; by 2009-13, the pattern in Japan was uniform (flat). In recent decades, suicide rates of older men in Australia, US and Japan, and older women in Japan and Hong Kong, have fallen considerably. Suicide rates of men aged 45-64 in Australia and US also fell, though by 2009-13 the US rate had risen again. The suicide rate of Australian men in their twenties halved between 1994-98 and 2009-13, while rates for younger men and women in Japan have risen since 1994-98. In Hong Kong, suicide rates of young men have increased. Age patterns of suicide likely reflect period and cohort effects shaped by socioeconomic stressors, availability of health and welfare services, access to lethal methods of suicide, and other factors. Greater understanding of their impact on age patterns of suicide can result in potential preventive solutions.

Changes in the age pattern of New Zealand suicide rates.

AIMS: It is timely to examine changes in male and female suicide rates across the age range in New Zealand, comparing them to some of the changes recorded in Australia. METHOD: Data regarding suicide and population figures in New Zealand and Australia were obtained. The suicide rates of different age-groups in the two countries were calculated and compared. Data concerning 'open verdicts' were also obtained. RESULTS: The age patterns of suicide rates in New Zealand and Australia have changed markedly and similarly. Suicide rates of New Zealand males in their twenties increased threefold between the 1960s and 1990s, with a fall since then. Nevertheless, the 2009-13 youth suicide rates in New Zealand were double the corresponding rates in Australia. Since 1979-88 a decrease in suicide rates of men and women aged 60-79 has been even greater than in Australia. The Maori suicide rate is high in young men but almost zero in old age. CONCLUSIONS: The persistently high suicide rate of New Zealand youths (Maori much more than non-Maori) remains of concern. The rate is equally high among indigenous young Australians. There has been a welcome decrease in late-life suicide rates in New Zealand and Australia.