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Record W342324326

Suicide Attempts by Jumping from Height

2000· article· en· W342324326 on OpenAlexaboutno aff
K. H. Ku, Desmond G. H. Nguyen, YP Ng

Bibliographic record

VenueHong Kong journal of psychiatry · 2000
Typearticle
Languageen
FieldPsychology
TopicSuicide and Self-Harm Studies
Canadian institutionsnot available
Fundersnot available
KeywordsQuarter (Canadian coin)JumpingSuicide methodsSuicide preventionPsychosocialPsychiatryPsychologyInjury preventionPoison controlMedicineMedical emergencySuicide rates
DOInot available

Abstract

fetched live from OpenAlex

ABSTRACT Background: The issue of suicide attempts by jumping from height is a serious problem in Hong Kong. This study explores the characteristics of survived suicidal jumpers and the suicide attempts. Methods: This is a retrospective data collection study, reviewing the psychiatric consultation notes of 79 jumpers who survived their attempts at suicide. Results: The jumpers attempting suicide were mostly Chinese men aged 21 to 50 years who were sober and drug-free at the time of the incident. More than three quarters of them were living with relatives or friends. Approximately half were employed full time or were housewives, but more than one quarter were unemployed. Three quarters of attempts occurred at their residences or familiar places. The jumpers did not usually leave suicide hints or notes, and nearly 50% of suicidal acts were done under impulse. One quarter of them were suffering from functional psychoses and one quarter from major depressive illness. Half of the attempts were triggered by psychosocial life events. Conclusion: Although half of the jumpers attempting suicide were suffering from either psychotic illness or major depressive disorder, mental illness itself could not account for all suicide attempts by jumping from height. A cognitive-behavioural model is postulated to account for the suicidal behaviour. Key words: Jumping From Height; Impulsiveness; Suicide Attempts INTRODUCTION Hong Kong has had a slight increase in suicide rates from 1981 to 1994, with jumping from height taking over from hanging as the commonest suicide method since 1985. (1) The years of potential life lost, which measures the extent of premature mortality, was estimated to be 322 years per 100,000 population in 1994--higher than that in Taiwan and Beijing during the same year. In 1994, jumping from height accounted for 59% of suicides in Hong Kong, while hanging accounted for 28%. Singapore had the similar phenomenon that 60% of suicides were accounted for by jumping. (2) However, this method is rarely used in Taiwan, which is also a cosmopolitan Chinese community. Jumping from height is usually considered to be a violent method of suicide. The persons who choose the method are usually regarded as having strong self-destructive motivation, and survivors are considered to have failed suicide. People using violent suicide methods should be distinguished from those using methods carrying minimal risk to life or those with multiple self harm behaviour. (3-5) Copeland studied 82 cases of successful suicide by jumping from buildings in Metropolitan Dade County in Miami, USA. (6) These accounted for 96.5% of cases of suicidal jumpers and 5.1% of all suicide cases in the county during 1982 to 1986. The suicidal jumpers were mostly white men, older than 60 years and sober and drug-free at the time of the incident. Two-thirds of the incidents occurred at the victim's residence, which was frequently an apartment or condominium-type of dwelling, seven floors or higher from the ground. The victims had often experienced depression prior to the incidents and did not usually leave a suicide note. However, the author commented that the study only included fatal jumpers and not survivors. He suggested that interviews with survived jumpers might give further information into the reasons behind the act, and might help to design preventive intervention. The study presented here attempts to supplement this information by reviewing psychiatric consultation case notes of survived jumpers. METHODS The Consultation-Liaison (C-L) Team at Kwai Chung Hospital KCH) provides a C-L psychiatric service to three general hospitals in Hong Kong with more than 2500 beds. A database has been established for the C-L service since July 1994, and this was used for the present study to identify patients who had been admitted to a general hospital for suicidal behaviour of jumping from height and had been attended by the liaison psychiatrists between 1 July 1994 and 31 December 1996. …

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

How this classification was reachedexpand

Full frame distilled prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesInsufficient payload (model declined to judge)
Consensus categoriesInsufficient payload (model declined to judge)
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Observational · Consensus signal: Observational
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.404
Threshold uncertainty score1.000

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.000
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0000.000
Research integrity0.0000.001
Insufficient payload (model declined to judge)0.0110.001

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.018
GPT teacher head0.296
Teacher spread0.277 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it

Classification

machine, unvalidated

Machine predicted; both teacher heads agree on what is shown here.

Study designObservational
Domainnot available
GenreEmpirical

How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".

Quick stats

Citations6
Published2000
Admission routes1
Has abstractyes

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