Self-harm and life problems: findings from the Multicentre Study of Self-harm in England.

PURPOSE: Self-harm is a major clinical problem and is strongly linked to suicide. It is important to understand the problems faced by those who self-harm to design effective clinical services and suicide prevention strategies. We investigated the life problems experienced by patients presenting to general hospitals for self-harm. METHODS: Data for 2000-2010 from the Multicentre Study of Self-harm in England were used to investigate life problems associated with self-harm and their relationship to patient and clinical characteristics, including age, gender, repeat self-harm and employment status. RESULTS: Of 24,598 patients (36,431 assessed episodes), 57% were female and with a mean age of 33.1 years (SD 14.0 years), 92.6% were identified as having at least one contributing life problem. The most frequently reported problems at first episode of self-harm within the study period were relationship difficulties (especially with partners). Mental health issues and problems with alcohol were also very common (especially in those aged 35-54 years, and those who repeated self-harm). Those who repeated self-harm were more likely to report problems with housing, mental health and dealing with the consequences of abuse. CONCLUSIONS: Self-harm usually occurs in the context of multiple life problems. Clinical services for self-harm patients should have access to appropriate care for provision of help for relationship difficulties and problems concerning alcohol and mental health issues. Individualised clinical support (e.g. psychological therapy, interventions for alcohol problems and relationship counselling) for self-harm patients facing these life problems may play a crucial role in suicide prevention.

Variation by ethnic group in premature mortality risk following self-harm: a multicentre cohort study in England.

BACKGROUND: Incidence and risk factors for self-harm vary according to ethnicity. People who self-harm have been shown to have increased risk of premature death, but little is known about mortality following self-harm in ethnic minority groups. METHODS: A prospective cohort study of self-harm presentations to three English cities (Derby, Manchester, Oxford) between 2000 and 2010. We linked to a national mortality dataset to investigate premature death in South Asian and Black people in comparison with White people to the end of 2012. RESULTS: Ethnicity was known for 72% of the 28,512 study cohort members: 88% were White, 5% were South Asian, and 3% were Black. After adjusting for age, gender and area-level socioeconomic deprivation, the risk of all-cause mortality was lower in South Asian (hazard ratio [HR] 0.51, 95% confidence interval [CI] 0.42 - 0.62) and Black people (HR 0.46, 95% CI 0.39 - 0.55) versus White people. Suicide risk was significantly lower in Black people (HR 0.43, 95% CI 0.19 - 0.97) than in White people. Prevalence of risk factors for premature death, such as previous self-harm, psychiatric treatment or concurrent alcohol misuse, was lower in South Asian and Black people than in White people. CONCLUSIONS: The risk of death following self-harm is lower in South Asian and Black people than White people in the UK, and they also have lower prevalence of risk factors for premature death. Awareness of both protective and risk factors might help to inform clinical decisions following assessment.

Alcohol use and misuse, self-harm and subsequent mortality: an epidemiological and longitudinal study from the multicentre study of self-harm in England.

OBJECTIVES: Alcohol use and misuse are strongly associated with self-harm and increased risk of future self-harm and suicide. The UK general population prevalence of alcohol use, misuse and alcohol-attributable harm has been rising. We have investigated the prevalence of and trends in alcohol use and misuse in self-harm patients and their associations with repeat self-harm and subsequent death. METHODS: We used patient data from the Multicentre Study of Self-Harm in England for 2000-2009 and UK mortality data for patients presenting from 2000 to 2007 who were followed up to the end of 2009. RESULTS: Alcohol involvement in acts of self-harm (58.4%) and alcohol misuse (36.1%) were somewhat higher than found previously in self-harm patients. Alcohol involvement and misuse were most frequent in men, those aged 35-54 years and those from white ethnicities. The frequency of alcohol misuse increased between 2000 and 2009, especially in women. Repetition of self-harm was associated with alcohol involvement in self-harm and particularly with alcohol misuse. Risk of suicide was increased significantly in women misusing alcohol. CONCLUSIONS: Alcohol use and misuse in self-harm patients appears to have increased in recent years, particularly in women. The association of alcohol with greater risk of self-harm repetition and mortality highlights the need for clinicians to investigate alcohol use in self-harm patients. Ready availability of alcohol treatment staff in general hospitals could facilitate appropriate aftercare and the prevention of adverse outcomes.

Premature death after self-harm: a multicentre cohort study.

BACKGROUND: People who self-harm have an increased risk of premature death. The aim of this study was to investigate cause-specific premature death in individuals who self-harm, including associations with socioeconomic deprivation. METHODS: We undertook a cohort study of patients of all ages presenting to emergency departments in Oxford, Manchester, and Derby, UK, after self-poisoning or self-injury between Jan 1, 2000, and Dec 31, 2007. Postcodes of individuals' place of residence were linked to the Index of Multiple Deprivation 2007 in England. Mortality information was supplied by the Medical Research Information Service of the National Health Service. Patients were followed up to the end of 2009. We calculated age-standardised mortality ratios (SMRs) and years of life lost (YLL), and we tested for associations with socioeconomic deprivation. FINDINGS: 30 950 individuals presented with self-harm and were followed up for a median of 6·0 years (IQR 3·9-7·9). 1832 (6·1%) patients died before the end of follow-up. Death was more likely in patients than in the general population (SMR 3·6, 95% CI 3·5-3·8), and occurred more in males (4·1, 3·8-4·3) than females (3·2, 2·9-3·4). Deaths due to natural causes were 2-7·5 times more frequent than was expected. For individuals who died of any cause, mean YLL was 31·4 years (95% CI 30·5-32·2) for male patients and 30·7 years (29·5-31·9) for female patients. Mean YLL for natural-cause deaths was 25·9 years (25·7-26·0) for male patients and 25·5 years (25·2-25·8) for female patients, and for external-cause deaths was 40·2 years (40·0-40·3) and 40·0 years (39·7-40·5), respectively. Disease of the circulatory (13·1% in males; 13·0% in females) and digestive (11·7% in males; 17·8% in females) systems were major contributors to YLL from natural causes. All-cause mortality increased with each quartile of socioeconomic deprivation in male patients (χ(2) trend 39·6; p<0·0001), female patients (13·9; p=0·0002), and both sexes combined (55·4; p<0·0001). Socioeconomic deprivation was related to mortality in both sexes combined from natural causes (51·0; p<0·0001) but not from external causes (0·30; p=0·58). Alcohol problems were associated with death from digestive-system disease, drug misuse with mental and behavioural disorders, and physical health problems with circulatory-system disease. INTERPRETATION: Physical health and life expectancy are severely compromised in individuals who self-harm compared with the general population. In the management of self-harm, clinicians assessing patients' psychosocial problems should also consider their physical needs. FUNDING: Department of Health Policy Research Programme.

Six-year follow-up of impact of co-proxamol withdrawal in England and Wales on prescribing and deaths: time-series study.

BACKGROUND: The analgesic co-proxamol (paracetamol/dextropropoxyphene combination) has been widely involved in fatal poisoning. Concerns about its safety/effectiveness profile and widespread use for suicidal poisoning prompted its withdrawal in the UK in 2005, with partial withdrawal between 2005 and 2007, and full withdrawal in 2008. Our objective in this study was to assess the association between co-proxamol withdrawal and prescribing and deaths in England and Wales in 2005-2010 compared with 1998-2004, including estimation of possible substitution effects by other analgesics. METHODS AND FINDINGS: We obtained prescribing data from the NHS Health and Social Care Information Centre (England) and Prescribing Services Partneriaeth Cydwasanaethau GIG Cymru (Wales), and mortality data from the Office for National Statistics. We carried out an interrupted time-series analysis of prescribing and deaths (suicide, open verdicts, accidental poisonings) involving single analgesics. The reduction in prescribing of co-proxamol following its withdrawal in 2005 was accompanied by increases in prescribing of several other analgesics (co-codamol, paracetamol, codeine, co-dydramol, tramadol, oxycodone, and morphine) during 2005-2010 compared with 1998-2004. These changes were associated with major reductions in deaths due to poisoning with co-proxamol receiving verdicts of suicide and undetermined cause of -21 deaths (95% CI -34 to -8) per quarter, equating to approximately 500 fewer suicide deaths (-61%) over the 6 years 2005-2010, and -25 deaths (95% CI -38 to -12) per quarter, equating to 600 fewer deaths (-62%) when accidental poisoning deaths were included. There was little observed change in deaths involving other analgesics, apart from an increase in oxycodone poisonings, but numbers were small. Limitations were that the study was based on deaths involving single drugs alone and changes in deaths involving prescribed morphine could not be assessed. CONCLUSIONS: During the 6 years following the withdrawal of co-proxamol in the UK, there was a major reduction in poisoning deaths involving this drug, without apparent significant increase in deaths involving other analgesics.

Risk factors for repetition and suicide following self-harm in older adults: multicentre cohort study.

BACKGROUND: Older adults have elevated suicide rates. Self-harm is the most important risk factor for suicide. There are few population-based studies of self-harm in older adults. AIMS: To calculate self-harm rates, risk factors for repetition and rates of suicide following self-harm in adults aged 60 years and over. METHOD: We studied a prospective, population-based self-harm cohort presenting to six general hospitals in three cities in England during 2000 to 2007. RESULTS: In total 1177 older adults presented with self-harm and 12.8% repeated self-harm within 12 months. Independent risk factors for repetition were previous self-harm, previous psychiatric treatment and age 60-74 years. Following self-harm, 1.5% died by suicide within 12 months. The risk of suicide was 67 times that of older adults in the general population. Men aged 75 years and above had the highest suicide rates. CONCLUSIONS: Older adults presenting to hospital with self-harm are a high-risk group for subsequent suicide, particularly older men.

Repetition of self-harm and suicide following self-harm in children and adolescents: findings from the Multicentre Study of Self-harm in England.

BACKGROUND: Self-harm (intentional self-poisoning and self-injury) in children and adolescents is often repeated and is associated with increased risk of future suicide. We have investigated factors associated with these outcomes. METHOD: We used data collected in the Multicentre Study of Self-harm in England on all self-harm hospital presentations by individuals aged 10-18 years between 2000 and 2007, and national death information on these individuals to the end of 2010. Cox hazard proportional models were used to identify independent and multivariable predictors of repetition of self-harm and of suicide. RESULTS: Repetition of self-harm occurred in 27.3% of individuals (N = 3920) who presented between 2000 and 2005 and were followed up until 2007. Multivariate analysis showed that repetition was associated with age, self-cutting, and previous self-harm and psychiatric treatment. Of 51 deaths in individuals who presented between 2000 and 2007 and were followed up to 2010 (N = 5133) half (49.0%) were suicides. The method used was usually different to that used for self-harm. Multivariate analysis showed that suicide was associated with male gender [Hazard ratio (HR) = 2.4, 95% CI 1.2-4.8], self-cutting (HR = 2.1, 95% CI 1.1-3.7) and prior psychiatric treatment at initial presentation (HR = 4.2, 95% CI 1.7-10.5). It was also associated with self-cutting and history of psychiatric treatment at the last episode before death, and history of previous self harm. CONCLUSIONS: Self-cutting as a method of self-harm in children and adolescents conveys greater risk of suicide (and repetition) than self-poisoning although different methods are usually used for suicide. The findings underline the need for psychosocial assessment in all cases.

Suicide and deliberate self-harm in Oxford University students over a 30-year period.

PURPOSE: To determine whether rates of suicide and self-harm in university students differ from those in other young people. METHODS: We obtained information on Oxford University students who died by suicide or presented to hospital following deliberate self-harm (DSH) between 1976 and 2006 from official records and a General Hospital monitoring system in Oxford. Rates of suicide and self-harm in the students and in other young people in the general population were calculated from university, local and national population figures. RESULTS: Forty-eight Oxford University students (32 males and 16 females) died by suicide. Most (N = 42) were aged 18-25 years. The suicide rate did not differ from that of other people in this age group in England and Wales (SMR 105.4; 95% CI 75.2, 143.4). There was evidence of clustering of methods of suicide over time. During the same period, 602 students (383 females and 219 males) presented to the General Hospital following DSH. Most (90.7%) were aged 15-24 years, in which age group rates of DSH (per 100,000) during term-time were lower than in other young people in Oxford City (females: 206.5 vs. 285.6, z = -5.03, p < 0.001; males: 75.9 vs. 111.2, z = -4.35; p < 0.001). There was an excess of student DSH episodes in the main exam term. CONCLUSIONS: Contrary to earlier findings and popular belief, suicide rates in Oxford University students do not differ from those in other young people. Rates of DSH are significantly lower than in other young people. Risk of DSH may increase around the time of examinations.

Epidemiology and nature of self-harm in children and adolescents: findings from the multicentre study of self-harm in England.

We examined epidemiology and characteristics of self-harm in adolescents and impact of national guidance on management. Data were collected in six hospitals in three centres between 2000 and 2007 in the Multicentre Study of Self-harm in England. Of 5,205 individuals (7,150 episodes of self-harm), three-quarters were female. The female:male ratio in 10-14 year-olds was 5.0 and 2.7 in 15-18 year-olds. Rates of self-harm varied somewhat between the centres. In females they averaged 302 per 100,000 (95 % CI 269-335) in 10-14 year-olds and 1,423 (95 % CI 1,346-1,501) in 15-18 year-olds, and were 67 (95 % CI 52-82) and 466 (95 % CI 422-510), respectively, in males. Self-poisoning was the most common method, involving paracetamol in 58.2 % of episodes. Presentations, especially those involving alcohol, peaked at night. Repetition of self-harm was frequent (53.3 % had a history of prior self-harm and 17.7 % repeated within a year). Relationship problems were the predominant difficulties associated with self-harm. Specialist assessment occurred in 57 % of episodes. Self-harm in children and adolescents in England is common, especially in older adolescents, and paracetamol overdose is the predominant method. National guidance on provision of psychosocial assessment in all cases of self-harm requires further implementation.

Impact of different pack sizes of paracetamol in the United Kingdom and Ireland on intentional overdoses: a comparative study.

BACKGROUND: In order to reduce fatal self-poisoning legislation was introduced in the UK in 1998 to restrict pack sizes of paracetamol sold in pharmacies (maximum 32 tablets) and non-pharmacy outlets (maximum 16 tablets), and in Ireland in 2001, but with smaller maximum pack sizes (24 and 12 tablets). Our aim was to determine whether this resulted in smaller overdoses of paracetamol in Ireland compared with the UK. METHODS: We used data on general hospital presentations for non-fatal self-harm for 2002-2007 from the Multicentre Study of Self-harm in England (six hospitals), and from the National Registry of Deliberate Self-harm in Ireland. We compared sizes of overdoses of paracetamol in the two settings. RESULTS: There were clear peaks in numbers of non-fatal overdoses, associated with maximum pack sizes of paracetamol in pharmacy and non-pharmacy outlets in both England and Ireland. Significantly more pack equivalents (based on maximum non-pharmacy pack sizes) were used in overdoses in Ireland (mean 2.63, 95% CI 2.57-2.69) compared with England (2.07, 95% CI 2.03-2.10). The overall size of overdoses did not differ significantly between England (median 22, interquartile range (IQR) 15-32) and Ireland (median 24, IQR 12-36). CONCLUSIONS: The difference in paracetamol pack size legislation between England and Ireland does not appear to have resulted in a major difference in sizes of overdoses. This is because more pack equivalents are taken in overdoses in Ireland, possibly reflecting differing enforcement of sales advice. Differences in access to clinical services may also be relevant.

Epidemiology and trends in non-fatal self-harm in three centres in England: 2000-2007.

BACKGROUND: Self-harm is a common reason for presentation to a general hospital, with a strong association with suicide. Trends in self-harm are an important indicator of community psychopathology, with resource implications for health services and relevance to suicide prevention policy. Previous reports in the UK have come largely from single centres. AIMS: To investigate trends in non-fatal self-harm in six general hospitals in three centres from the Multicentre Study of Self-harm in England, and to relate these to trends in suicide. METHOD: Data on self-harm presentations to general hospital emergency departments in Oxford (one), Manchester (three) and Derby (two) were analysed over the 8-year period 1 January 2000 to 31 December 2007. RESULTS: Rates of self-harm declined significantly over 8 years for males in three centres (Oxford: -14%; Manchester: -25%; Derby: -18%) and females in two centres (Oxford: -2% (not significant); Manchester: -13%; Derby: -17%), in keeping with national trends in suicide. A decreasing proportion and number of episodes involved self-poisoning alone, and an increasing proportion and number involved other self-injury (e.g. hanging, jumping, traffic related). Episodes involving self-cutting alone showed a slight decrease in numbers over time. Trends in alcohol use at the time of self-harm and repetition within 1 year were stable. CONCLUSIONS: There were decreasing rates of non-fatal self-harm over the study period that paralleled trends in suicide in England. This was reflected mainly in a decline in emergency department presentations for self-poisoning.

Toxicity of antidepressants: rates of suicide relative to prescribing and non-fatal overdose.

BACKGROUND: Self-poisoning is a common method of suicide and often involves ingestion of antidepressants. Information on the relative toxicity of antidepressants is therefore extremely important. AIMS: To assess the relative toxicity of specific tricyclic antidepressants (TCAs), a serotonin and noradrenaline reuptake inhibitor (SNRI), a noradrenergic and specific serotonergic antidepressant (NaSSA), and selective serotonin reuptake inhibitors (SSRIs). METHOD: Observational study of prescriptions (UK), poisoning deaths involving single antidepressants receiving coroners' verdicts of suicide or undetermined intent (England and Wales) and non-fatal self-poisoning episodes presenting to six general hospitals (in Oxford, Manchester and Derby) between 2000 and 2006. Calculation of fatal toxicity index based on ratio of rates of deaths to prescriptions, and case fatality based on ratio of rates of deaths to non-fatal self-poisonings. RESULTS: Fatal toxicity and case fatality indices provided very similar results (rho for relative ranking of indices 0.99). Case fatality rate ratios showed greater toxicity for TCAs (13.8, 95% CI 13.0-14.7) than the SNRI venlafaxine (2.5, 95% CI 2.0-3.1) and the NaSSA mirtazapine (1.9, 95% CI 1.1-2.9), both of which had greater toxicity than the SSRIs (0.5, 95% CI 0.4-0.7). Within the TCAs, compared with amitriptyline both dosulepin (relative toxicity index 2.7) and doxepin (2.6) were more toxic. Within the SSRIs, citalopram had a higher case fatality than the other SSRIs (1.1, 95% CI 0.8-1.4 v. 0.3, 95% CI 0.2-0.4). CONCLUSIONS: There are wide differences in toxicity not only between classes of antidepressants, but also within classes. The findings are relevant to prescribing decisions, especially in individuals at risk, and to regulatory policy.

Ethnic differences in self-harm, rates, characteristics and service provision: three-city cohort study.

BACKGROUND: Studies of self-harm in Black and minority ethnic (BME) groups have been restricted to single geographical areas, with few studies of Black people. AIMS: To calculate age- and gender-specific rates of self-harm by ethnic group in three cities and compare characteristics and outcomes. METHOD: A population-based self-harm cohort presenting to five emergency departments in three English cities during 2001 to 2006. RESULTS: A total of 20 574 individuals (16-64 years) presented with self-harm; ethnicity data were available for 75%. Rates of self-harm were highest in young Black females (16-34 years) in all three cities. Risk of self-harm in young South Asian people varied between cities. Black and minority ethnic groups were less likely to receive a psychiatric assessment and to re-present with self-harm. CONCLUSIONS: Despite the increased risk of self-harm in young Black females fewer receive psychiatric care. Our findings have implications for assessment and appropriate management for some BME groups following self-harm.

Trends in prescribing and self-poisoning in relation to UK regulatory authority warnings against use of SSRI antidepressants in under-18-year-olds.

AIMS: To assess the impact of the UK Medicines and Healthcare products Regulatory Authority (MHRA) warning in December 2003 not to prescribe selective serotonin reuptake inhibitor (SSRI) antidepressants, except fluoxetine, to under-18-year-olds. METHODS: Interrupted time series analysis of prescriptions (UK) and general hospital presentations for nonfatal self-poisoning (three centres in England) for 2000-2006. RESULTS: Following the MHRA warning in December 2003 there were significant decreases in prescribing of SSRI antidepressants (conservative estimate 51%) to young people aged 12-19 years. Surprisingly, this decrease also affected fluoxetine (conservative estimate 20%) and tricyclics (conservative estimate 27%). Nonfatal self-poisoning in this age group following the warning also declined significantly for SSRIs (conservative estimate 44%), but not for fluoxetine, tricyclic antidepressants, or all drugs and other substances. Rates of nonfatal self-harm did not change significantly over the study period. CONCLUSIONS: The reduction in both prescribing and self-poisoning with SSRI antidepressants (except fluoxetine) following the MHRA warning is in keeping with reduced availability of these drugs. There was some evidence of substitution from other SSRIs to fluoxetine for use in self-poisoning. Importantly, overall rates of nonfatal self-harm and self-poisoning did not change, indicating no substitution of method or increases in self-injury.

General hospital presentations of non-fatal hanging over a 28-year period: case-control study.

Suicide by hanging and self-strangulation ('hanging') has become more common. We studied people who presented to hospital during a 28-year study period after using these methods for non-fatal self-harm. Hanging increased greatly in frequency during this time. The male:female ratio was nearly 3:1. Females were distinguished from males by far higher rates of psychiatric care, personality disorder and previous self-harm. Compared with matched individuals who presented with non-fatal self-poisoning, more of those who used hanging had high suicidal intent, fewer used alcohol in association with the act, and more subsequently died by suicide. They represent an important subgroup of those who self-harm, who require especially careful assessment and follow-up.

Psychosocial assessment following self-harm: results from the multi-centre monitoring of self-harm project.

BACKGROUND: Psychosocial assessment is central to the management of self-harm, but not all individuals receive an assessment following presentation to hospital. Research exploring the factors associated with assessment and non-assessment is sparse. It is unclear how assessment relates to subsequent outcome. METHODS: We identified episodes of self-harm presenting to six hospitals in the UK cities of Oxford, Leeds, and Manchester over an 18-month period (1st March 2000 to 31st August 2001). We used established monitoring systems to investigate: the proportion of episodes resulting in a specialist assessment in each hospital; the factors associated with assessment and non-assessment; the relationship between assessment and repetition of self-harm. RESULTS: A total of 7344 individuals presented with 10,498 episodes of self-harm during the study period. Overall, 60% of episodes resulted in a specialist psychosocial assessment. Factors associated with an increased likelihood of assessment included age over 55 years, current psychiatric treatment, admission to a medical ward, and ingestion of antidepressants. Factors associated with a decreased likelihood of assessment included unemployment, self-cutting, attending outside normal working hours, and self-discharge. We found no overall association between assessment and self-harm repetition, but there were differences between hospitals--assessments were protective in one hospital but associated with an increased risk of repetition in another. LIMITATIONS: Some data may have been more likely to be recorded if episodes resulted in a specialist assessment. This was a non-experimental study and so the findings relating specialist assessment to repetition should be interpreted cautiously. CONCLUSION: Many people who harm themselves, including potentially vulnerable individuals, do not receive an adequate assessment while at hospital. Staff should be aware of the organizational and clinical factors associated with non-assessment. Identifying the active components of psychosocial assessment may help to inform future interventions for self-harm.

Variations in time of hospital presentation for deliberate self-harm and their implications for clinical services.

BACKGROUND: Variation in number, characteristics and management of deliberate self-harm (DSH) patients presenting to hospital during the 24-h cycle and day of the week may have implications for patient services. We have investigated how patient characteristics and clinical management of DSH episodes vary according to hour and day of presentation. METHODS: Time of presentation was studied in 5348 DSH patients who presented to a general hospital following 9101 episodes during a 6-year period. Patient characteristics were identified through routine clinical monitoring. RESULTS: Presentations varied markedly during the 24-h cycle, ranging from a peak between 8 pm and 3 am (average hourly rate of 6.6% of all episodes) to a low between 4 am and 10 am (1.4%). The majority (72.0%) occurred outside office hours. DSH associated with alcohol use and interpersonal problems was more frequent during the late evening or night, and at the weekend. A greater proportion of daytime presentations involved high suicide intent (although a larger number of high intent acts presented at other times), and more were admitted and assessed. LIMITATIONS: This study was based on DSH presentations to one hospital. Time and date of presentation and of psychosocial assessment, not time of DSH, were available for analysis. CONCLUSIONS: Peak times for DSH presentations are at night and the weekend, suggesting that specialist DSH services in general hospitals should be available 24 h a day, 7 days a week. Time of presentation should not be used as a proxy measure of suicide intent.

Variation in deliberate self-harm around Christmas and New Year.

Seasonal and temporal variations in suicide by patient and demographic groups, though important, have been investigated infrequently. This study examined patterns of non-fatal deliberate self-harm (DSH) during Christmas and New Year (from December 16th to January 6th) by specific patient and demographic group. The sample comprised 19,346 people who presented with 31,369 episodes of DSH to a general hospital Emergency Department in Oxford, UK. Autoregression analysis of all episodes from 1976 to 2003 (controlling for day of the week, month and year) revealed significant reductions (-30% to -40%) in the occurrence of DSH compared with expected numbers on each day from December 19th to 26th (except the 23rd), though no significant increase was found on any of the subsequent 11 days. When analysed separately, young people aged under 25 years showed decreases (-60%) in the occurrence of DSH on several days throughout Christmas (p<0.001) and New Year (p<0.01). Patients with partner relationship problems showed a decrease 3 days before Christmas Day (-80%, p<0.001) and an increase on New Year's Day (+100%, p<0.01). Patients with family relationship problems showed decreases before Christmas and after New Year (-60%, p<0.01). Patients with social isolation problems, or a previous history of DSH showed decreases (-60%, p<0.01) before Christmas only. Patients who used alcohol at the time of DSH or in the 6h beforehand, but did not chronically misuse alcohol, showed an increase (+250%, p<0.01) on New Year's Day. There was no significant variation in the occurrence of DSH for patient groups with either low/medium or high suicide intent. The findings elucidate how social and individual factors may interact in contributing to DSH. They are of theoretical interest, and have important clinical implications regarding identification of patient groups especially susceptible to DSH at New Year.

Repetition of deliberate self-harm: a study of the characteristics and subsequent deaths in patients presenting to a general hospital according to extent of repetition.

Repetition of deliberate self-harm (DSH) is common. Some patients repeat multiple times. We have investigated the characteristics of repeaters, and mortality in three groups of DSH patients by repetition status. Data collected by the Oxford Monitoring System for Attempted Suicide were used to examine the pattern of repetition of DSH patients presenting to a general hospital between 1990 and 1997. Each patient was tracked through the monitoring system with regard to repetition. Patients traceable through National Death Registers were followed up until 2000 with respect to mortality. A total of 4,167 patients were studied of which 1,022 (24.5%) repeated at least once during follow-up. Using multinomial regression, past history of DSH was the variable most strongly associated with frequent (4+) and less frequent (1-3) repetitions. Risk of suicide was significantly increased in females with frequent repetition (7.7% dying by suicide), compared with both those with 1-3 repetitions (2.3%) and those not repeating (1.0%). The analyses were repeated for the 2,167 patients with no past history of DSH at their first presentation. Using multinomial regression, personality disorder was the only variable that was associated with 4+ repetitions compared with no repetitions, although a number of variables distinguished between patients with 1-3 repetitions and no repeat episodes. For clinicians assessing DSH patients, past history of DSH is the best predictor of infrequent and frequent repetition. In patients with no past history of DSH the presence of personality disorder increases the risk of frequent repetition of DSH.

The effect of using NHS number as the unique identifier for patients who self-harm: a multi-centre descriptive study.

BACKGROUND: Processing personal data for research purposes and the requirement of anonymity has been the subject of recent debate. We aimed to determine the proportion of individuals who present to emergency departments with non-fatal suicidal behavior where an NHS number has been successfully traced and to investigate the characteristics of patients associated with non-capture. METHOD: This was a descriptive study of people attending after self-harm using allocation of NHS numbers as main outcome measurement. Data from the Multicentre Monitoring of Self-Harm Project from 3 centres in England were used to identify consecutive patients (N = 3000) who were treated in six emergency departments in Oxford, Manchester and Leeds in 2004 and 2005 following self-harm. RESULTS: NHS number was available between 55-73% of individuals across centres. Characteristics associated with non-recording of NHS number in more than one centre included those from ethnic minority groups (Oxford: chi-squared statistic = 13.6, df = 3, p = 0.004; Manchester: chi-squared statistic = 13.6, df = 3, p