Trends in deliberate self-harm in Oxford, 1985-1995. Implications for clinical services and the prevention of suicide

Acute poisoning: understanding 90% of cases in a nutshell

The acutely poisoned patient remains a common problem facing doctors working in acute medicine in the United Kingdom and worldwide. This review examines the initial management of the acutely poisoned patient. Aspects of general management are reviewed including immediate interventions, investigations, gastrointestinal decontamination techniques, use of antidotes, methods to increase poison elimination, and psychological assessment. More common and serious poisonings caused by paracetamol, salicylates, opioids, tricyclic antidepressants, selective serotonin reuptake inhibitors, benzodiazepines, non-steroidal anti-inflammatory drugs, and cocaine are discussed in detail. Specific aspects of common paediatric poisonings are reviewed.

Toxicological features of deliberate self-poisonings

BACKGROUND

Deliberate self-poisoning (DSP) is a major health problem with increasing incidence mainly among young people.

OBJECTIVE

To examine the clinical and toxicological characteristics of DSP, it is compared to unintentional (non-DSP) exposures and those characteristics which might be associated with increased toxicological risk are identified.

METHODS

Two-year retrospective poison centre chart review.

STATISTICS

chi2 analysis.

RESULTS

3802 DSP cases were reported. Most calls (95%) were made by physicians compared to 51% in non-DSP exposures, P <0.0001. There were almost twice as many females as males, contrary to unintentional exposures (P <0.001). Peak frequency involvement was at the age of 15-20 years for females and older for males. Only 19.8% of DSP calls were made within the first hour of exposure compared to 46% of the non-DSP calls (P < 0.001). Younger patients tended to present earlier. The vast majority of exposures occurred by ingestion and at home. Pharmaceuticals and chemicals were involved in 86% and 12% of DSP cases, respectively (compared to 29% and 44% in non-DSP exposures, respectively, P < 0.001). Psychiatric drugs were more commonly used in older age groups and analgesics among the younger. Insecticides, sodium hypochlorite and rodenticides were the most frequently used chemicals. Neurological involvement was observed in 48.2% of DSP patients compared to 16.9% in non-DSP exposures. DSP was associated with greater severity than non-DSP exposures (21% and 10% had moderate to severe toxicity, respectively, P <0.001). Severity was greater among males, aged older than 45 years, with time from exposure to consultation 8 hours or longer and with exposure to chemicals, psychiatric drugs or combinations.

CONCLUSIONS

Most DSP patients were females, aged 15-20 years, used pharmaceuticals and had neurological involvement. Males, aged over 45 years, with longer time to toxicology consult and the use of chemicals were associated with increased severity. These parameters should alert the treating physician to the possibility of a poor course and hence to a more aggressive therapeutic approach.

Self-injurious behavior as a separate clinical syndrome

The field of clinical psychology may benefit from adopting a deliberate self-injury syndrome as a distinct disorder for representation in the Diagnostic and Statistical Manual of Mental Disorders (4th ed., text rev.; American Psychiatric Association, 2000). The phenomenological and empirical data supporting a deliberate self-injury syndrome are reviewed, and arguments for and against the adoption of a distinct syndrome are explored.

Pain and deliberate self-harm: an important association

OBJECTIVE

The aim of this study was to establish how often pain was a factor contributing to an episode of deliberate self-harm.

METHOD

Retrospective case note examination of all deliberate self-harm patients with concurrent medical problems admitted to a general hospital over 2 years.

RESULTS

Pain was considered to be a contributory factor in the episode of deliberate self-harm in 75 (4%) of the total number of episodes of deliberate self-harm (1665) over the 2-year period. These patients were older and had higher suicide intent scores, but lower rates of previous psychiatric illness or alcohol or drug misuse than did the deliberate self-harm patients with medical problems but no pain. Although 60% had experienced pain for more than 6 months only, 8 (12%) were attending the local Pain Clinic at the time of the deliberate self-harm.

CONCLUSION

We propose closer collaboration between general hospital services and local pain clinics for deliberate self-harm patients with painful disorders. Clinicians need to assess suicidal ideation and risk of self-harm when prescribing for this population.

Psychosocial assessment of patients who attend an accident and emergency department with self-harm

It has been recommended that all patients attending hospital accident and emergency departments in the United Kingdom (UK) with self-harm should be offered adequate psychosocial assessment to identify those at risk of completed suicide or repeated self-harm. This paper focuses on the extent to which this recommendation has been implemented in a large district general hospital in Wales, and compares the characteristics and hospital management of patients who received no specialist assessment with those who were assessed by a psychiatric liaison nurse or a psychiatrist. Data were routinely collected as part of the hospital annual audit procedure and confirm previous findings that guidelines for the general hospital management of self-harm patients have not been well implemented. Whilst we found some evidence that certain high risk patient groups were more likely to receive specialist assessment, this was far from universal. We conclude that if there is to be a reduction in the rate of suicide in Wales and the UK as a whole, it is crucial that services for people who self-harm are more appropriately targeted on patients who are at greatest risk.

Parasuicide in a low-income country: results from three-year hospital surveillance in Nicaragua

AIMS

A study was undertaken to assess the incidence of parasuicide in Nicaragua, to identify groups at risk, and to describe the characteristics of parasuicides, such as methods used and seasonal and diurnal patterns.

METHOD

All hospital-admitted parasuicide cases in the area of Leon, Nicaragua, were assessed over a three-year period using standardized instruments.

RESULTS

Two hundred and thirty-three parasuicide cases were identified in the catchment area giving a parasuicide rate of 66.3/100,000 inhabitants per year based on the population 10 years and older. Corresponding figure for 15 years and older was 71.3. A majority were females (68.8%), who were significantly younger than the males (mean 20.8 years vs. mean 24.6 years). The highest rates were found in the age group 15-19 years with a female rate three times higher than the male rate (302.9 vs. 98.9). Pesticides, a highly lethal substance, were used as method in 19.1% of the attempts. Consistent seasonal variation with peaks in May-June and September-October were found over the years. Among parasuicide cases, 46.5% had been in contact with the healthcare system within 6 months before attempting suicide.

CONCLUSIONS

Parasuicides represent a significant health problem among young people in Nicaragua. Preventive efforts should be directed especially towards the life situation for young girls, limitation of availability of suicide means, increased awareness in schools concerning suicidal problems, as well as improved management of patients with mental health problems within primary healthcare.

Selective serotonin reuptake inhibitors (SSRIs) and suicide in adults: meta-analysis of drug company data from placebo controlled, randomised controlled trials submitted to the MHRA's safety review

OBJECTIVE

To investigate whether selective serotonin reuptake inhibitor (SSRI) antidepressants are associated with an increased risk of suicide related outcomes in adults.

DESIGN

Meta-analysis of randomised controlled trials of SSRIs compared with placebo in adults submitted by pharmaceutical companies to the safety review of the Medicines and Healthcare products Regulatory Agency (MHRA).

PARTICIPANTS

Over 40,000 individuals participating in 477 randomised controlled trials.

MAIN OUTCOME MEASURES

Suicide, non-fatal self harm, and suicidal thoughts.

RESULTS

An estimated 16 suicides, 172 episodes of non-fatal self harm, and 177 episodes of suicidal thoughts were reported. We found no evidence that SSRIs increased the risk of suicide, but important protective or hazardous effects cannot be excluded (odds ratio 0.85, 95% credible interval 0.20 to 3.40). We found weak evidence of an increased risk of self harm (1.57, 0.99 to 2.55). Risk estimates for suicidal thoughts were compatible with a modest protective or adverse effect (0.77, 0.37 to 1.55). The relative frequency of reported self harm and suicidal thoughts in the trials compared with suicide indicates non-fatal end points were under-recorded.

CONCLUSION

Increased risks of suicide and self harm caused by SSRIs cannot be ruled out, but larger trials with longer follow up are required to assess the balance of risks and benefits fully. Any such risks should be balanced against the effectiveness of SSRIs in treating depression. When prescribing SSRIs, clinicians should warn patients of the possible risk of suicidal behaviour and monitor patients closely in the early stages of treatment.

Antidepressant treatment and the risk of fatal and non-fatal self harm in first episode depression: nested case-control study

OBJECTIVE

To compare the risk of non-fatal self harm and suicide in patients taking selective serotonin reuptake inhibitors (SSRIs) with that of patients taking tricyclic antidepressants, as well as between different SSRIs and different tricyclic antidepressants.

DESIGN

Nested case-control study.

SETTING

Primary care in the United Kingdom.

PARTICIPANTS

146,095 individuals with a first prescription of an antidepressant for depression.

MAIN OUTCOME MEASURES

Suicide and non-fatal self harm.

RESULTS

1968 cases of non-fatal self harm and 69 suicides occurred. The overall adjusted odds ratio of non-fatal self harm was 0.99 (95% confidence interval 0.86 to 1.14) and that of suicide 0.57 (0.26 to 1.25) in people prescribed SSRIs compared with those prescribed tricyclic antidepressants. We found little evidence that associations differed over time since starting or stopping treatment. We found some evidence that risks of non-fatal self harm in people prescribed SSRIs compared with those prescribed tricyclic antidepressants differed by age group (interaction P = 0.02). The adjusted odds ratio of non-fatal self harm for people prescribed SSRIs compared with users of tricylic antidepressants for those aged 18 or younger was 1.59 (1.01 to 2.50), but no association was apparent in other age groups. No suicides occurred in those aged 18 or younger currently or recently prescribed tricyclic antidepressants or SSRIs.

CONCLUSION

We found no evidence that the risk of suicide or non-fatal self harm in adults prescribed SSRIs was greater than in those prescribed tricyclic antidepressants. We found some weak evidence of an increased risk of non-fatal self harm for current SSRI use among those aged 18 or younger. However, preferential prescribing of SSRIs to patients at higher risk of suicidal behaviour cannot be ruled out.

Self-cutting: patient characteristics compared with self-poisoners

A large ( n = 14,892) consecutive sample of deliberate self-harm (attempted suicide) patients who presented to a general hospital in the United Kingdom during a 23-year study period was examined (over two consecutive time periods) in order to compare the characteristics of those who used self-cutting ( n = 428) and those who self-poisoned ( n = 11,065). Patients who used different methods on other occasions, or were not assessed by the psychiatric service, were excluded. In the first time period (January 1976-June 1988), the self-cutters were distinguished from the self-poisoners by more often being male, single, not employed, and having a history of previous deliberate self-harm. In the second time period (July 1988-December 1998) the self-cutters were again distinguished by more often being male and having a history of previous deliberate self-harm, but also by being more likely to live alone, misuse alcohol, and have low suicidal intent scores. The finding of an excess of males among the self-cutters is contrary to the impression in the literature that self-cutting presentations to general hospitals more often involve females. It also indicates that the treatment needs of those who deliberately cut themselves are likely to differ from those of self-poisoners.

UK legislation on analgesic packs: before and after study of long term effect on poisonings

OBJECTIVE

To evaluate the long term effect of legislation limiting the size of packs of analgesics sold over the counter.

DESIGN

Before and after study.

SETTING

Suicides in England and Wales, data from six liver units in England and Scotland and five general hospitals in England, and UK data on sales of analgesics, between September 1993 and September 2002.

DATA SOURCES

Office for National Statistics; six liver units in England and Scotland; monitoring systems in general hospitals in Oxford, Manchester, and Derby; and Intercontinental Medical Statistics Health UK.

MAIN OUTCOME MEASURES

Deaths by suicidal overdose with paracetamol, salicylates, or ibuprofen; numbers of patients admitted to liver units, listed for liver transplant, and undergoing transplantations for paracetamol induced hepatotoxicity; non-fatal self poisonings with analgesics and numbers of tablets taken; and sales figures for analgesics.

RESULTS

Suicidal deaths from paracetamol and salicylates were reduced by 22% (95% confidence interval 11% to 32%) in the year after the change in legislation on 16 September 1998, and this reduction persisted in the next two years. Liver unit admissions and liver transplants for paracetamol induced hepatotoxicity were reduced by around 30% in the four years after the legislation. Numbers of paracetamol and salicylate tablets in non-fatal overdoses were reduced in the three years after the legislation. Large overdoses were reduced by 20% (9% to 29%) for paracetamol and by 39% (14% to 57%) for salicylates in the second and third years after the legislation. Ibuprofen overdoses increased after the legislation, but with little or no effect on deaths.

CONCLUSION

Legislation restricting pack sizes of analgesics in the United Kingdom has been beneficial. A further reduction in pack sizes could prevent more deaths.

Factors influencing the development and amelioration of suicidal thoughts in the general population. Cohort study

BACKGROUND

The incidence of suicidal thoughts in the British population is unknown.

AIMS

To determine the factors associated with the development of, and recovery from, suicidal thoughts.

METHOD

An 18-month follow-up survey investigated 2404 of the adults who took part in the second National Psychiatric Morbidity Survey.

RESULTS

The annual incidence of suicidal thoughts was 2.3%. Incidence was highest in women and among 16- to 24-year-olds. Increased incidence was associated with not being in a stable relationship, low levels of social support and being unemployed. Fifty-seven per cent of those with suicidal thoughts at baseline had recovered by the 18-month follow-up interview.

CONCLUSIONS

Risk factors for suicidal thoughts are similar to those for completed suicide, although the age and gender patterning is different. Fewer than 1 in 200 people who experience suicidal thoughts go on to complete suicide. Further study into explanations for the differences in the epidemiology of suicidal thoughts and suicide is crucial to understanding the pathways (protective and precipitating) linking suicidal thoughts to completed suicide and should help inform effective prevention of suicide.

Factors that influence emergency department doctors' assessment of suicide risk in deliberate self-harm patients

OBJECTIVES

To determine the patient factors influencing UK Emergency Department doctors' assessment of suicide risk. To establish whether immediate clinical management is consistent with perceived risk.

METHODS

The Manchester and Salford Self-Harm project is a multi-centre deliberate self-harm monitoring study. Data collected were used to analyse risk assessments made by Emergency Department doctors between September 1997 and August 1999. We used univariate and logistic regression analyses to determine the factors Emergency Department doctors used to make suicide risk assessments.

RESULTS

A total of 3220 deliberate self-harm assessment forms were completed in two years by Emergency Department doctors; 2922 (91%) included a clinical assessment of risk; 28 out of 48 variables were associated with perceived suicide risk. Multiple logistic regression analyses showed that current mental state, high suicidal intent (including medical seriousness of attempt), and male sex were the most important independent predictors of suicide risk. Being referred to psychiatric services directly from the Emergency Department or to surgical/medical services was also strongly associated with a perceived high risk.

CONCLUSION

In contrast to the negative findings of previous research, we found that Emergency Department doctors were influenced by key risk factors for suicide in their assessment of deliberate self-harm patients. Emergency Department doctors' assessments reflected the immediate risk of suicide, indicated by factors such as current mental state and strong suicidal intent. Background risk factors such as social adversity and psychiatric history were less influential. We would recommend that training for emergency doctors should emphasize the importance of both immediate and background risk factors.

Challenging times: a study to detect Irish adolescents at risk of psychiatric disorders and suicidal ideation

Suicide rates in young Irish males have risen markedly in the past 10 years, and suicide is now the leading cause of death in young men in the 15-24-year-old age range. This is the first large-scale study in Ireland that set out to identify young people at risk of psychiatric disorders, including depressive disorders, and suicidal ideation. Seven hundred and twenty three school-going adolescents aged 12-15 years were screened using the Children's Depression Inventory and the Strengths and Difficulties Questionnaire. 19.4% were identified as being 'at risk' of having a mental health disorder. Of this 'at risk' group, 12.1% expressed possible suicidal intent and 45.7% expressed suicidal ideation. Of the 583 adolescents identified as being 'not at risk', 13% expressed suicidal ideation while none expressed suicidal intent. Being 'at risk' was not related to gender or to socio-economic status. Those living with two parents were significantly more likely to be in the 'not at risk' group. Girls attending co-educational schools were twice as likely to be in 'at risk' group compared with those attending all girls schools, while school type was not a risk factor for boys. This study shows that, as in other western countries, there are large numbers of young Irish people at risk of mental health disorders and suicidal ideation in the community, and raises the question of the importance of mental health promotion in our education system.

An investigation of differences between self-injurious behavior and suicide attempts in a sample of adolescents

Data from 390 high school students were collected to examine potential differences between adolescents who had attempted suicide and those who engaged in self-injurious behavior on measures of depression, suicidal ideation, and attitudes toward life and death. Significant differences were found between controls and the self-harm groups on all dependent variables. A significant difference on attitudes toward life was found between the self-injury and suicide attempt groups. Post-hoc regression analyses showed that measures of depression, suicide ideation, and attitudes towards life predicted participants' self-harm categorization. These findings provide preliminary evidence that self-injurious behavior is different from attempted suicide among a community sample of adolescents.

Repetition of deliberate self-harm and subsequent suicide risk: long-term follow-up study of 11,583 patients

BACKGROUND

Repetition of deliberate self-harm (DSH) is a risk factor for suicide. Little information is available on the risk for specific groups of people who deliberately harm themselves repeatedly.

AIMS

To investigate the long-term risk of suicide associated with repetition of DSH by gender, age and frequency of repetition.

METHOD

A mortality follow-up study to the year 2000 was conducted on 11 583 people who presented to the general hospital in Oxford between 1978 and 1997. Repetition of DSH was determined from reported episodes prior to the index episode and episodes presenting to the same hospital during the follow-up period. Deaths were identified through national registers.

RESULTS

Thirty-nine per cent of patients repeated the DSH. They were at greater relative risk of suicide than the single-episode DSH group (2.24; 95% CI 1.77-2.84). The relative risk of suicide in the repeated DSH group compared with the single-episode DSH group was greater in females (3.5; 95% CI 1.3-2.4) than males (1.8; 95% CI 2.3-5.3) and was inversely related to age (up to 54 years). Suicide risk increased further with multiple repeat episodes of DSH in females.

CONCLUSIONS

Repetition of DSH is associated with an increased risk of suicide in males and females. Repetition may be a better indicator of risk in females, especially young females.

Correlates of relative lethality and suicidal intent among deliberate self-harm patients

Conflicting findings have been reported regarding the relationship between the potential lethality of acts of deliberate self-harm (DSH) and suicidal intent, and how each relates to patient characteristics. This study examines the relationship of suicidal intent of DSH to lethality, the relationship of both to patient characteristics, and determines if intent or lethality are risk factors for repetition of DSH. Potential lethality and Suicide Intent Scale (SIS) scores for DSH episodes were examined in a representative sample of 150 patients presenting to a general hospital. Follow-up interviews were completed 12 to 20 months later. Lethality was strongly associated with high intent. Both lethality and intent were associated with male gender. Suicidal intent but not lethality was associated with the presence of psychiatric disorder and depression. Intent was significantly correlated with hopelessness scale score. Although intent was correlated with both depression and self-esteem scale scores, these correlations became nonsignificant when the effect of hopelessness was removed. Repetition of DSH during the follow-up period was related to neither lethality nor intent scores for the original episodes. Lethality and suicidal intent, although related, have somewhat different correlates. Both should be considered when assessing DSH patients, but their relationship to further suicidal behavior does not appear to be straightforward.

The epidemiology of self-poisoning in the UK

Self-poisoning by ingestion or inhalation is common, and it is important to study its various epidemiological manifestations with clear definitions. Data on fatal self-poisonings are recorded nationally within the UK and are codified according to the International Classification of Diseases (ICD) revision relevant at the time. Most fatal self-poisonings are codified as suicides, accidental deaths or undetermined deaths ('open verdicts'). Non-fatal self-poisoning data, whether accidental or as a manifestation of deliberate self-harm, are recorded through hospital discharge information nationally but are not routinely published in the same way as mortality data. The bulk of the UK's published epidemiological information on nonfatal self-poisoning episodes is largely based on individual hospitals' admission or discharge records ('special studies'). After establishing definitions for different self-poisoning categories we discuss the published data on self-poisoning as they relate to suicide, accidental self-poisoning and deliberate self-harm in the UK.

Deliberate self-harm in adolescents: a study of characteristics and trends in Oxford, 1990-2000

BACKGROUND

Deliberate self-harm (DSH) is a major healthcare problem in adolescents. Identification of targets for prevention and treatment requires ongoing monitoring of trends and characteristics of those involved.

METHOD

Using data from the Oxford Monitoring System for Attempted Suicide, we have examined trends and characteristics in adolescents aged 12-18 years presenting to a general hospital because of DSH between 1990 and 2000.

RESULTS

The numbers of presentations by females increased during the study period. An association of DSH with school stress was suggested by there being fewer presentations during the school holiday periods, the largest number in term times occurring on Mondays, and study problems being common. Self-poisoning was involved in more than 90% of episodes. Paracetamol overdoses decreased following legislation on pack sizes of analgesics. Antidepressant overdoses increased during the study period, in keeping with the rise in prescriptions. Drug misuse increased markedly in the boys, as did a history of violence to others. Being a victim of violence increased in girls. Suicide intent was higher in males. Problems faced by the adolescents showed marked gender differences, and differed between age groups and between those carrying out their first DSH episode and repeaters.

CONCLUSIONS

Clinical management of DSH in adolescents requires a range of responses, often involving multiservice and multidisciplinary input. Preventive initiatives in schools are also required.

Psychiatric features of seriously life-threatening suicide attempters: a clinical study from a general hospital in Japan

OBJECTIVE

Although attempted suicide is one of the strongest predictors of completed suicide, few Japanese studies have described psychiatric differences between those who attempt suicide by overdose (OD) and those who use more violent methods (MV).

METHODS

A total of 22 consecutively admitted MVs were compared to 78 ODs. All patients were referred for psychiatric evaluation during the same 3-year period.

RESULTS

The MV group was predominantly male (68%), whereas the OD group was predominantly female (72%). Using DSM-IV criteria, depressive disorders were most common in both groups, followed by psychotic disorders. The OD group had significantly more borderline patients. Contrary to previous reports, prior psychiatric contact was low in the MV group. MVs were more likely to complain of financial problems and to retain a definite wish to die after the attempt.

CONCLUSIONS

This study identified meaningful differences between the two groups of patients who attempted suicide.

Assessment and management of self-harm in older adults attending accident and emergency: a comparative cross-sectional study

OBJECTIVE

Older people who undertake self-harm are at higher suicide risk than are younger patients. This study examines whether this greater risk is reflected in the assessment and after-care that older patients receive when they attend accident and emergency.

METHOD

This cross-sectional study, set in the two accident and emergency departments in a large industrial city in Northern England, compared 141 consecutive attendances due to self-harm among older patients (aged 55 years and over) with a random sample of 125 attendances of younger people (aged 15-54) attending because of self-harm. Data were drawn from accident and emergency records and from psychiatric and general hospital casenotes.

RESULTS

Compared with the younger group, older patients were significantly more likely to be admitted from accident and emergency to the general hospital, to receive a specialist assessment whilst at the hospital, and to be offered psychiatric after-care-either as a psychiatric in-patient or an out-patient.

CONCLUSIONS

Fortunately, older people attending accident and emergency following self-harm seemed likely to receive psychosocial assessment from a mental health specialist, and they were much more likely than younger patients to be offered after-care. Hospitals will need to monitor accident and emergency and other records if they are to check that their services are responding to the high risks seen in older patients.

Assessment and Aftercare for Deliberate Self-Harm Patients Provided by a General Hospital Psychiatric Service

Summary: We report on a sample of 135 deliberate self-harm (DSH) patients who were assessed by a general hospital DSH service, and on those who were offered aftercare by, or telephone open access to, the service. Patients' satisfaction with assessment and treatment, and their outcome were investigated at follow-up 12-20 months later. Four-fifths of patients reported the assessment following DSH to have been helpful and the assessor sympathetic. Thirty-three (24%) of the 135 patients assessed were offered treatment by the DSH service but 13 declined or failed to attend. Of the 20 who engaged in treatment, 17 (94%) were satisfied with their care. Open access to the DSH service by telephone was offered to 53 (39%) patients, nine (22%) of whom reported at follow-up that they had used this facility. A specialist DSH service can effectively assess and treat patients following DSH. It is important that the service is accessible and acceptable to patients.

Attendance at the accident and emergency department in the year before suicide: retrospective study

BACKGROUND

The National Confidential Inquiry into suicides in England and Wales found that a quarter of suicides are preceded by mental health service contact in the year before death. However, visits to accident and emergency departments due to self-harm may not lead to a record of mental health service contact. Aims To determine the proportion of suicides preceded by accident and emergency attendance in the previous year.

METHOD

We obtained the list of probable suicides in Leeds for a 38-month period, and examined the records from the city's accident and emergency departments for a year before each death.

RESULTS

Eighty-five (39%) of the 219 people who later died by suicide had attended an accident and emergency department in the year before death, 15% because of non-fatal self-harm. Final visits due to self-harm were often shortly before suicide (median 38 days), but the National Confidential Inquiry recorded about a fifth of them as 'not in contact' with local mental health services.

CONCLUSIONS

Although many suicides are preceded by recent attendance at accident and emergency departments due to non-fatal self-harm, local mental health service records may show no recent contact. Suicide prevention might be enhanced were accident and emergency departments and mental health services to work together more closely.

Suicide following deliberate self-harm: long-term follow-up of patients who presented to a general hospital

BACKGROUND

Deliberate self-harm (DSH) is the strongest risk factor for future suicide. Up-to-date information on the extent of risk is lacking.

AIMS

To investigate the risk of suicide after DSH during a long follow-up period.

METHOD

A mortality follow-up study to 2000 was conducted on 11 583 patients who presented to hospital after DSH between 1978 and 1997. Data were obtained from a general hospital DSH register in Oxford and the Office for National Statistics, and from equivalent mortality registers in Scotland and Northern Ireland.

RESULTS

Three hundred patients had died by suicide or probable suicide. The risk in the first year of follow-up was 0.7% (95% CI 0.6-0.9%), which was 66 (95% CI 52-82) times the annual risk of suicide in the general population. The risk after 5 years was 1.7%, at 10 years 2.4% and at 15 years 3.0%. The risk was far higher in men than in women (hazard ratio 2.8,95% CI 2.2-3.6). In both genders it increased markedly with age at initial presentation.

CONCLUSIONS

Following DSH there is a significant and persistent risk of suicide, which varies markedly between genders and age groups. Reduction in the risk of suicide following DSH must be a key element in national suicide prevention strategies.

Co-proxamol and suicide: a study of national mortality statistics and local non-fatal self poisonings

OBJECTIVES

To examine the incidence of suicides due to co-proxamol compared with tricyclic antidepressants and paracetamol, and to compare fatality rates for self poisonings with these drugs.

DESIGN

Analysis of routinely collected national and local data on suicides and self poisonings.

SETTING

Records of suicides in England and Wales 1997-9; non-fatal self poisonings in Oxford District 1997-9.

DATA SOURCES

Office for National Statistics and Oxford monitoring system for attempted suicide.

MAIN OUTCOME MEASURES

Incidence of suicides with co-proxamol or tricyclic antidepressants or paracetamol. Ratios of fatal to non-fatal self poisonings.

RESULTS

Co-proxamol alone accounted for 5% of all suicides. Of 4162 drug related suicides, 18% (766) involved co-proxamol alone, 22% (927) tricyclic antidepressants alone, and 9% (368) paracetamol alone. A higher proportion of suicides in the 10-24 year age group were due to co-proxamol than in the other age groups. The odds of dying after overdose with co-proxamol was 2.3 times (95% confidence interval 2.1 to 2.5) that for tricyclic antidepressants and 28.1 times (24.9 to 32.9) that for paracetamol.

CONCLUSIONS

Self poisoning with co-proxamol is particularly dangerous and contributes substantially to drug related suicides. Restricting availability of co-proxamol could have an important role in suicide prevention.

United Kingdom legislation on pack sizes of analgesics: background, rationale, and effects on suicide and deliberate self-harm

Following increasing concern in the UK about the mortality and morbidity associated with self-poisoning with analgesics, especially paracetamol (Tylenol, acetaminophen), legislation was introduced in 1998 to modify packs sold over-the-counter. The most important change was a reduction in the maximum size of packs. In this paper the background to the legislation, the rationale behind it, and its early impact are reviewed. The changes have had significant positive initial benefits on the mortality and morbidity associated with self-poisoning with analgesics.

Do we manage deliberate self-harm appropriately? Characteristics of general hospital patients who are offered psychiatric aftercare

BACKGROUND The appropriateness of psychiatric management decisions following an episode of deliberate self-harm is under-researched. AIM To determine whether the offer of follow-up or psychiatric admission by psychiatric doctors is related to known predictors of repetition of self-harm or completed suicide, and recognition of a depressive disorder. METHODS Prospective survey of 158 adult self-harm referrals from the general hospital. RESULTS Offer of aftercare was significantly associated with a definite wish to die at the time of the attempt (P&lt;0.001), Beck's Suicide Intent score (P=0.001), Beck's Hopelessness score (P=0.001), age (P&lt;0.01) and an ICD-10 diagnosis of depression (P&lt;0.001). Psychiatric admission was more likely for men (P=0.01) and accommodation problems (P=0.04) and less likely for relationship problems (P=0.01). CONCLUSIONS Psychiatrists are selectively admitting or following up patients from established high-risk groups. Given the limitations of suicide prevention and mental health resources, their management is appropriate.

Family history of suicidal behaviour: prevalence and significance in deliberate self-harm patients

OBJECTIVE

To investigate whether there are differences between the characteristics of deliberate self-harm (DSH) patients with and without a family history of suicidal behaviour.

METHOD

In 146 DSH patients, those with and without a positive family history were compared with regard to the nature and repetition of their DSH episodes, and psychological and psychiatric characteristics.

RESULTS

Fifty-two (35.6%) patients had a family history of suicidal behaviour. DSH was more frequent in patients' mothers (17.1%) than fathers (2.7%). Patients with a family history of suicidal behaviour, especially females, had higher state anger scores.

CONCLUSION

Family history of suicidal behaviour appears to be associated with greater anger. Absence of other associations suggests that family history probably has less implication for individuals who have already engaged in DSH than in contributing to its initiation. Future studies should include patients with violent or life-threatening DSH acts.

Fatal and non-fatal repetition of self-harm. Systematic review

BACKGROUND

Non-fatal self-harm frequently leads to non-fatal repetition and sometimes to suicide. We need to quantify these two outcomes of self-harm to help us to develop and test effective interventions.

AIMS

To estimate rates of fatal and non-fatal repetition of self-harm.

METHOD

A systematic review of published follow-up data, from observational and experimental studies. Four electronic databases were searched and 90 studies met the inclusion criteria.

RESULTS

Eighty per cent of studies found were undertaken in Europe, over one-third in the UK. Median proportions for repetition 1 year later were: 16% non-fatal and 2% fatal; after more than 9 years, around 7% of patients had died by suicide. The UK studies found particularly low rates of subsequent suicide.

CONCLUSIONS

After 1 year, non-fatal repetition rates are around 15%. The strong connection between self-harm and later suicide lies somewhere between 0.5% and 2% after 1 year and above 5% after 9 years. Suicide risk among self-harm patients is hundreds of times higher than in the general population.

Problems reported by self-harm patients: perception, hopelessness, and suicidal intent

OBJECTIVE

Research suggests that problem-solving therapy may be an effective intervention following self-harm. This study determines the relation between self-harm patients' perceptions of their problems and their expressions of hopelessness and suicidal intent.

METHOD

One hundred fifty patients admitted to a district hospital following self-harm were asked questions about the type and perceived solubility of their problems. In addition, in each case, the patient completed a Beck's hopelessness scale and a psychiatrist completed a Beck's suicidal intent scale.

RESULTS

66% of patients, and more of the males than of the females, recorded at least one problem that they believed to be insoluble; such problems were most often in the area of relationships. Patients who reported insoluble problems experienced higher levels of hopelessness and more suicidal intent. There was significant correlation among the number of insoluble problems, hopelessness, and suicidal intent.

CONCLUSIONS

People who undertake self-harm report insoluble relationship problems. When assessing hopelessness and suicidal intent in self-harm patients, clinicians should ask about perception of insoluble problems.

Deliberate self-poisoning in Oman

OBJECTIVE

To describe the demographics, precipitating factors, substances and methods used for deliberate self-harm in Oman.

METHODS

Data were extracted from the Accident and Emergency (A & E) records of patients treated at the A & E units in Muscat from 1993 to 1998. Data were obtained form the history, and clinical findings resulting form deliberate self-harm.

RESULTS

During the 5-year study period, 123 persons presented to various hospitals in the Muscat area with injuries that resulted form deliberate self-harm. Most of these cases were women, students and unemployed. There was a high incidence of family, marital and psychiatric or social problems. The methods of self-harm were most often analgesics (such as paracetamol) and non-pharmaceutical chemicals.

CONCLUSIONS

The rate of self-injurious behaviour is low in Oman, compared with other countries, including other Islamic countries. The data illustrate a rising rate and a tendency to ingest toxic doses of analgesics or non-pharmaceutical chemicals.

General practice based intervention to prevent repeat episodes of deliberate self harm: cluster randomised controlled trial

OBJECTIVES

To evaluate the impact of an intervention based in general practice on the incidence of repeat episodes of deliberate self harm.

DESIGN

Cluster randomised controlled trial in which 98 general practices were assigned in equal numbers to an intervention or a control group. The intervention comprised a letter from the general practitioner inviting the patient to consult, and guidelines on assessment and management of deliberate self harm for the general practitioner to use in consultations. Control patients received usual general practitioner care.

SETTING

General practices within Avon, Wiltshire, and Somerset Health Authorities, whose patients lived within the catchment area of four general hospitals in Bristol and Bath.

PARTICIPANTS

1932 patients registered with the study practices who had attended accident and emergency departments at one of the four hospitals after an episode of deliberate self harm.

MAIN OUTCOME MEASURES

Primary outcome was occurrence of a repeat episode of deliberate self harm in the 12 months after the index episode. Secondary outcomes were number of repeat episodes and time to first repeat.

RESULTS

The incidence of repeat episodes of deliberate self harm was not significantly different for patients in the intervention group compared with the control group (odds ratio 1.2, 95% confidence interval 0.9 to 1.5). Similar findings were obtained for the number of repeat episodes and time to first repeat. Subgroup analyses indicated that there was no differential effect of the intervention according to patient's sex (P=0.51) or method used to cause deliberate self harm (P=0.64). The treatment seemed to be beneficial for people with a history of deliberate self harm, but it was associated with an adverse effect in people for whom the index episode was their first episode (interaction P=0.017).

CONCLUSIONS

An invitation to consult, sent by the general practitioner of patients who have deliberately harmed themselves, and the use of management guidelines during any subsequent consultation did not reduce the incidence of repeat self harm. A subgroup analysis that indicated that patients who had previously harmed themselves benefited from the intervention was inconsistent with previous evidence and should be treated with caution. More research is needed on how to manage patients who deliberately harm themselves, to reduce the incidence of repeat episodes.

Deliberate self-harm in adolescence: a systematic review of psychological and psychosocial factors

AIMS

This paper is a systematic review of the research literature that identifies psychological and psychosocial factors associated with adolescent deliberate self-harm (DSH). The aims of this review were to identify the key psychological and psychosocial factors that aid the identification of individuals at risk of DSH, and suggest specific strategies for intervention.

BACKGROUND

Research has highlighted a parallel rise in rates of DSH referrals to general hospitals and rates of successful suicides in the younger age groups and gender groups. It is also highlighted that pressure on services in responding to these increases may be resulting in an inadequate response to both first-episode DSH and repetition of self-harm. One cause for concern is the lack of adequate psychosocial assessment for adolescents presenting at hospital following a DSH incident. Research of the literature suggests that there may be a paucity of research into after-care strategies in self-harm to prevent repetition and escalation of self-destructive behaviour.

METHODS

A systematic review of the literature was conducted to identify the psychological and psychosocial factors relating to DSH. Results. The results found typical psychological and psychosocial factors associated with DSH in adolescents, although psychosocial factors were less consistently measured because of the breadth of tools and methods used.

CONCLUSIONS

It is discussed whether associated factors are causative of DSH or the accompanying symptoms in DSH. It is suggested that positive psychosocial factors may have a part to play in providing protection against DSH behaviour. Therapeutic responses to DSH are suggested as preventative measures against repeat episodes.

Poisoning in Zimbabwe: a survey of eight major referral hospitals

A retrospective study of the pattern of poisoning cases admitted to eight major urban referral hospitals in Zimbabwe over a 2-year period (1998-1999 inclusive) was conducted to describe the pattern of poisoning at these centres. There were a total of 2764 hospital admissions due to poisoning, involving a total of 2846 toxic agents. Accidental poisoning (AP) and deliberate self-poisoning (DSP) accounted for 48.9% (1352 cases) and 41.3% (1142 cases), respectively. With AP, the highest number of cases (45.9%) occurred in children below the age of 5 years, with half of these due to chemicals, mainly paraffin. In the DSP group, however, more than 60% of all cases occurred in the 16-25-year age group. In addition, twice as many females as males were admitted for DSP compared with an overall male/female ratio of 1 : 1.2. Pesticides (31.4%) and pharmaceuticals (30.4%) were the most common groups of toxic agents responsible for the hospital admissions. Unknown toxins, natural toxins and pesticides showed the highest mortality rates (15.4%, 8.3% and 6.7%, respectively). Compared with the last major survey of poisoning in Zimbabwe, the pattern of poisoning at referral hospitals has changed over the last decade, with an increase in pesticide and pharmaceutical cases and a marked fall in cases of traditional medicine poisoning. Educational and legislative interventions may be required to address these changes. There is the need also to investigate further the high mortality rates associated with traditional medicine poisoning.

Attempted suicide by drug overdose and by poison-ingestion methods seen at the main general hospital in the Fiji islands: a comparative study

OBJECTIVE

This study examined the prevalence and the characteristics of deliberate self-poisoning patients seen at the main general hospital in the Fiji Islands.

METHOD

Thirty-one consecutive patients with deliberate drug-overdose and 27 others with nonoverdosed self-poisoning were compared on sociodemographic and clinical variables.

RESULTS

Deliberate self-poisoning cases represented 0.3% of the hospital admissions, and had a rate of 25.9 per 100,000 population. The overdose group was significantly older (P<.05), whereas the poison-ingestion group had significantly greater proportion of males (P<.03). The rate of psychiatric morbidity was significantly higher in the overdose group (P=.04), whereas the history of alcohol abuse was significantly higher in the other group (P=.04). Paracetamol (35.5%) and paraquat (29.7%) were the most commonly used agents.

CONCLUSIONS

Age, gender, rate of psychiatric morbidity, or history of alcohol abuse could be predictive of whether drug overdose or poison ingestion would be used for deliberate self-poisoning. This information could be relevant in the formulation of suicide preventive strategies.

Effects of legislation restricting pack sizes of paracetamol and salicylate on self poisoning in the United Kingdom: before and after study

OBJECTIVE

To evaluate the effects on suicidal behaviour of legislation limiting the size of packs of paracetamol and salicylates sold over the counter.

DESIGN

Before and after study.

SETTING

UK population, with detailed monitoring of data from five liver units and seven general hospitals, between September 1996 and September 1999.

SUBJECTS

People who died by suicidal or accidental overdose with paracetamol or salicylates or who died of undetermined causes; patients admitted to liver units with hepatic paracetamol poisoning; patients presenting to general hospitals with self poisoning after taking paracetamol or salicylates.

MAIN OUTCOME MEASURES

Mortality from paracetamol or salicylate overdose; numbers of patients referred to liver units or listed for liver transplant; numbers of transplantations; numbers of overdoses and tablets taken; blood concentrations of the drugs; prothrombin times; sales to pharmacies and other outlets of paracetamol and salicylates.

RESULTS

Numbers of tablets per pack of paracetamol and salicylates decreased markedly in the year after the change in legislation on 16 September 1998. The annual number of deaths from paracetamol poisoning decreased by 21% (95% confidence interval 5% to 34%) and the number from salicylates decreased by 48% (11% to 70%). Liver transplant rates after paracetamol poisoning decreased by 66% (55% to 74%). The rate of non-fatal self poisoning with paracetamol in any form decreased by 11% (5% to 16%), mainly because of a 15% (8% to 21%) reduction in overdoses of paracetamol in non-compound form. The average number of tablets taken in paracetamol overdoses decreased by 7% (0% to 12%), and the proportion involving >32 tablets decreased by 17% (4% to 28%). The average number of tablets taken in salicylate overdoses did not decrease, but 34% fewer (2% to 56%) salicylate overdoses involved >32 tablets. After the legislation mean blood concentrations of salicylates after overdose decreased, as did prothrombin times; mean blood concentrations of paracetamol did not change.

CONCLUSION

Legislation restricting pack sizes of paracetamol and salicylates in the United Kingdom has had substantial beneficial effects on mortality and morbidity associated with self poisoning using these drugs.

Accident or suicide? Predictors of Coroners' decisions in suicide and accident verdicts

OBJECTIVE

To examine the factors used by Coroners to distinguish between suicide and accidental death among young men in Merseyside and Cheshire.

DESIGN

Retrospective epidemiological survey of deaths due to external causes. Data sources included Coroner's Inquest, GP and hospital data. Logistic regression was carried out to determine the multiple effect of individual factors on defining Coroner's verdict.

SETTING

Merseyside and Cheshire, United Kingdom.

SUBJECTS

Males aged 15-39 years who died from unnatural causes during 1995 in Merseyside and Cheshire.

MAIN OUTCOME MEASURE

Coroner's verdict.

RESULTS

An active mode of death was by far the strongest predictor of a suicide as opposed to an accident verdict. Other significant differentiating factors included expressed intent, behavioural change, deliberate self-harm and psychiatric contact.

CONCLUSION

The validity of using method of death as a predictor of intent is questionable. Evidence left by drug users who kill themselves may differ from that left by non-drug users and may need to be sought in less conventional ways. There may be a discrepancy between those factors deemed important by health professionals as indicators of suicide, such as deliberate self-harm, and those given most weight by the Coroner. It may be more pragmatic, in terms of public health policy development, to challenge the concept that self-destructive behaviour can be categorized as being either intentional or unintentional. There is some evidence suggesting that deaths due to suicide and accidents both result from elements of self-destructive behaviour and therefore, the practice of categorizing deaths as either suicides or accidents could be misleading.

Deliberate self-poisoning in an Irish county hospital

BACKGROUND

In 1997, 433 people committed suicide in Ireland, one-quarter of whom were less than 24 years of age.

AIM

To determine demographics, agent choice and source, suicidality and follow-up care of deliberate self-poisoning patients.

METHOD

Details of 111 patients admitted to one hospital in 1997 following drug overdose were studied retrospectively. Eleven had been accidental ingestions, the remaining 100 were deliberate self-poisoning.

RESULTS

Men accounted for 38% of the presentations and were more likely to have suicidal intent than women. An average of 2.3 different agents were used. Paracetamol was taken by 37%, hypnotics/anxiolytics by 33% and nonsteroidal anti-inflammatories by 17%. Alcohol was consumed synchronously by 51% and 17% fulfilled criteria for alcohol dependency. One-third of patients were clinically depressed. All six patients requiring ventilation had consumed a combination of tricyclic antidepressants and alcohol. There were no deaths.

CONCLUSION

Deliberate self-poisoning remains a significant problem. Paracetamol and alcohol use are particularly marked in this population. The combination of tricyclic antidepressant drugs and alcohol were the most dangerous.

Deliberate self-harm patients who leave the accident and emergency department without a psychiatric assessment: a neglected population at risk of suicide

OBJECTIVES

Deliberate self-harm (DSH) patients, despite their risk of suicide, are often discharged directly from accident and emergency (A&E) departments without undergoing a psychiatric assessment. The aims of this study were to determine the characteristics and outcome of these patients.

METHODS

The characteristics of DSH patients who were discharged directly from an A&E department over a 2-year period were investigated, comparing those who had a psychiatric assessment with those who did not. In a matched control design, the outcome of a group of patients who did not receive a psychiatric assessment was compared with that of a group of patients who were assessed.

RESULTS

Of DSH patients who were discharged directly from the A&E department 58.9% (145/246) did not have a psychiatric assessment. Nonassessed patients were more likely to have a past history of DSH, to be in the 20-34 year age group, and to have exhibited difficult behaviour in the A&E department. Patients presenting between 5 p.m. and 9 a.m. were less likely to be assessed than those attending between 9 a.m. and 5 p.m. Further DSH during the subsequent year occurred in 37.5% of the nonassessed patients compared with 18.2% of matched assessed patients. They were also more likely to have psychiatric treatment.

CONCLUSION

A substantial proportion of DSH patients discharged directly from A&E departments do not receive a psychiatric assessment. Nonassessed patients may be at greater risk of further DSH and completed suicide than those who are assessed. Hospital services need to be organised such that DSH patients managed in A&E departments can receive an assessment of psychosocial problems and risk.

Deliberate self-harm in children: the nurse's therapeutic style

This article examines child health nursing skills in the management of deliberate self-harm in children and young people. In order for education to be effective (i.e. so that it changes practice) it must address the belief systems of the practitioner. It is suggested that such belief systems are embedded in collectively held tribal stories. The more challenging the patient's behaviour, the more powerful the influence of the tribal narrative--possibly as a defensive strategy. The authors outline strategies aimed at increasing the range and depth of the therapeutic response to episodes of self-harm, and outline nursing interventions in the management of self-harming children.

Psychiatric and personality disorders in deliberate self-harm patients

BACKGROUND

Previous UK studies have reported much lower rates of psychiatric and personality disorder in those who attempt suicide than in those who die by suicide.

AIMS

To determine the nature and prevalence of psychiatric and personality disorders in deliberate self-harm (DSH) patients.

METHOD

A representative sample of 150 DSH patients who presented to a general hospital were assessed using a structured clinical interview and a standardised instrument. Follow-up interviews were completed for 118 patients approximately 12-16 months later.

RESULTS

ICD-10 psychiatric disorders were diagnosed in 138 patients (92.0%), with comorbidity of psychiatric disorders in 46.7%. The most common diagnosis was affective disorder (72.0%). Personality disorder was identified in 45.9% of patients interviewed at follow-up. Comorbidity of psychiatric and personality disorder was present in 44.1%.

CONCLUSIONS

Psychiatric and personality disorders, and their comorbidity, are common in DSH patients. This has important implications for assessment and management.

Deliberate self-harm and antidepressant drugs. Investigation of a possible link

BACKGROUND

It is not clear if the frequency of deliberate self-harm (DSH) is the same in patients taking different pharmacological classes of antidepressant drugs.

AIMS

To compare the frequency of DSH in patients who had been prescribed a tricyclic antidepressant (TCA) or a selective serotonin reuptake inhibitor (SSRI) prior to the DSH event.

METHOD

This was a prospective study in 2776 consecutive DSH cases attending an accident and emergency department. The incidence of DSH in TCA-treated cases and SSRI-treated cases is expressed as number of DSH events per 10 000 prescriptions of each antidepressant.

RESULTS

Significantly more DSH events occurred following the prescription of an SSRI than that of a TCA (P<0.001). The occurrence of DSH was highest with fluoxetine and lowest with amitriptyline.

CONCLUSIONS

Merely prescribing safer-in-overdose antidepressants is unlikely to reduce the overall morbidity from DSH.

The characteristics of suicide attempters admitted to the main general hospital in Fiji Islands

OBJECTIVE

To study the characteristics of suicide attempters attending the main general hospital in Fiji Islands.

METHOD

Consecutive suicide attempters were clinically evaluated, and their sociodemographic and clinical characteristics were compared with those of other patients seen in the psychiatric service between January 15, 1999 and January 14, 2000.

RESULTS

Thirty-nine suicide attempters were seen, representing 36.8% of all the cases referred to the psychiatric service. The prevalence of attempted suicide in the Greater Suva Area was 34.8 per 100,000. Majority (56.4%) were young (16-25 years), Indians (59%), female (61.5%), students (41%), never married (74.4%) and of Hindi faith (48.7%). The commonly used methods were ingestion of drugs and pesticides. The intention to die was present in 20 (51.3%) of the population. Social problems and/or psychiatric comorbidity were present in over 60% of cases. Suicide attempters were significantly younger, more of single persons (P<.0001), and fewer were in employment (P<.001) than nonsuicidal cases seen. The difference was not significant when the two groups were compared regarding gender, race or religion.

CONCLUSIONS

Young people attempt suicide in disturbed psychosocial milieu, using available poisoning methods with strong desire to die. Apparently, high proportion of female Indians in this group reflects high rate of service utilization by them. Unemployment is an insignificant predisposing factor.