Impact of the COVID-19 pandemic on self-harm and self-harm/suicide ideation: population-wide data linkage study and time series analysis.

BACKGROUND: The COVID-19 pandemic and associated lockdowns were predicted to have a major impact on suicidal behaviour, including self-harm. However, current studies have produced contradictory findings with limited trend data. AIMS: Nine years of linked individual-level administrative data were utilised to examine changes in hospital-presenting self-harm and ideation (thoughts of self-harm or suicide) before and during the pandemic. METHOD: National self-harm registry data were linked to demographic and socioeconomic indicators from healthcare registration records (n = 1 899 437). Monthly presentations of self-harm or ideation were split (pre-COVID-19 restrictions: April 2012 to February 2020; and during restrictions: March to September 2020). Auto-regressive integrated moving average (ARIMA) models were trained in R taking into consideration trends and seasonal effects. Forecast ('expected') monthly values were compared with 'actual' values, stratified by demographic factors and method of harm. RESULTS: The number of individuals presenting with self-harm or ideation dropped significantly at the beginning of the pandemic (March-May 2020), before returning mostly to expected trends from June 2020. Stratified analysis showed similar presentation trends across most demographic subgroups except for those aged over 65 years, living alone or in affluent areas, where presentations remained unaffected, and those aged under 16 years, where numbers presenting with self-harm or ideation increased above expected levels. CONCLUSIONS: Although population trends show an overall drop in presentations before a return to 'normal' from June 2020, the demographic profile of those presenting with self-harm or ideation varied significantly, with increases in children under the age of 16 years. This highlights important potential target groups who may have been most negatively affected by the pandemic.

Mortality risk following self-harm in young people: a population cohort study using the Northern Ireland Registry of Self-Harm.

BACKGROUND: Self-harm is a recognised predictor of suicide and is most common in those aged under 25 years. The aims of this study were to describe the characteristics of young people who present with self-harm; quantify the risk of suicide and other causes of death during follow up, and to identify factors associated with mortality risk. METHODS: The Northern Ireland Registry of Self-Harm (NIRSH) is a national registry capturing complete data on all presentations made to the 12 Emergency Departments (EDs) in Northern Ireland (NI). Data relating to self-harm presentations registered in the NIRSH between 2012 and 2015 were linked to primary care registrations and death records up until 31st December 2018. Logistic regression was employed to examine the factors associated with self-harm. Cox regression was used to estimate mortality risk following self-harm and explore the associated risk factors. RESULTS: The cohort consisted of 390,740 individuals aged 10-24 years registered with a General Practitioner (GP) in NI. During follow-up, 4,450 individuals presented with self-harm. Rates of self-harm were highest in females, those aged 20-24 years (ORadj  = 3.53, 95% CI 3.28-3.80, p < .001), and in the most deprived areas (ORadj  = 2.71, 95% CI 2.45-2.99, p < .001). Thirty five individuals who presented with self-harm died by suicide, accounting for 23% of all suicide deaths in the cohort. Suicide risk was increased 19-fold in those who presented with self-harm after adjustment for age, sex and area-level factors (HRadj  = 19.00, 95% CI 12.80-28.21, p < .001). Increased suicide risk was observed in males (HRadj  = 2.04, 95% CI 0.99-4.23, p = .05) and those using more violent methods of self-injury (HRadj  = 3.89, 95% CI 1.65-9.13, p < .001). CONCLUSIONS: Young people who self-harm are at a significantly greater risk of suicide. Almost a quarter of young people who died by suicide in NI had presented to EDs with self-harm, highlighting that the ED may provide a nodal point of intervention among a typically hard to identify and reach population.

Suicide risk following ED presentation with self-harm varies by hospital.

BACKGROUND: Patients presenting to Emergency Department (ED) with self-harm are recognized to be at high risk of suicide and other causes of death in the immediate period following ED presentation. It is also recognized that there is a large variation in the management and care pathways that these patients experience at EDs. AIMS: This study asks if there is a significant variation in mortality risk according to hospital attended and if this is explained by differences in care management. METHODS: Population-wide data from the Northern Ireland Registry of Self-Harm from April 2012 were linked with centrally held mortality records to December 2019, providing data on self-harm type and ED care. Cox proportional hazards models analyzed mortality risk, coded as suicide, all-external causes and all-cause mortality. RESULTS: Analysis of the 64,350 ED presentations for self-harm by 30,011 individuals confirmed a marked variation across EDs in proportion of patients receiving mental health assessment and likelihood of admission to general and psychiatric wards. There was a significant variation in suicide risk following attendance according to ED attended with the three-fold range between the lowest (HRadj 0.32 95% CIs 0.16, 0.67) and highest. These differences persisted even after adjustment for patient characteristics, variation in types of self-harm, and care management at the ED. CONCLUSIONS: This study suggests that while the management of self-harm cases in the ED is important, it is the availability and access to, and level of engagement with, the subsequent management and care in the community rather than the immediate care at EDs that is most critical for patients presenting to ED with self-harm. However, the initial care in ED is an important gateway in initiating referrals to these services.

Impact of the COVID-19 pandemic on psychotropic medication uptake: time-series analysis of a population-wide cohort.

BACKGROUND: The COVID-19 pandemic and associated lockdowns were predicted to have a major impact on mental health, however current studies have produced contradictory findings with limited longitudinal data. AIMS: Nine years of linked, individual-level administrative data were used to examine changes in psychotropic medication uptake before and during the pandemic. METHOD: Medication data from a population-wide prescribing database were linked to demographic and socioeconomic indicators from healthcare registration records (n = 1 801 860). Monthly prescription uptake was split (pre-restrictions: January 2012 to February 2020 and during restrictions: March to October 2020). Auto regressive integrated moving average (ARIMA) models were trained in R taking into consideration trends and seasonal effects. Forecast ('expected') monthly values were compared with 'actual' values, stratified by demographic factors. RESULTS: Over the study period 38.5% of the study population were in receipt of ≥1 psychotropic medication. Uptake of these medications have been following a strong upward trend since January 2012. In March 2020 uptake of all medications increased beyond expected values, returning to expected trends from May 2020 for antidepressants, anxiolytics and antipsychotics. In the 8 months during restrictions uptake of hypnotic medication was 12% higher than expected among those <18 years, and anxiolytic medication higher than expected in those >65 years. CONCLUSIONS: Results suggest an initial 'stockpiling' of medications in March 2020 before trends mostly returned to expected levels. The anticipated tsunami of mental ill health is not yet manifest in psychotropic medication uptake. There are indications of increased anxiety and sleep difficulties in some subgroups, although these conditions may resolve as we emerge from the pandemic without need for psychiatric intervention.

The association between self-harm and area-level characteristics in Northern Ireland: an ecological study.

BACKGROUND: Factors contributing to suicidal behaviour are complex and multi-faceted. This study took an ecological approach to examine the association between area-level factors and rates of self-harm in Northern Ireland. METHODS: Data on self-harm presentations to emergency departments (EDs) were obtained from the Northern Ireland Self-harm Registry. The study included residents of Northern Ireland aged 16-64 years. Deprivation was measured using the Northern Ireland Multiple Deprivation Measure 2017. Population density and social fragmentation were calculated using measures from the 2011 census. Associations between area-level factors and self-harm rates were explored using negative binomial regression. RESULTS: Between 2013 and 2015, 14 477 individuals aged 16-64 years presented to EDs in Northern Ireland following self-harm. The rate of self-harm was 472 per 100 000 and was higher for male residents (478 vs. 467). Self-harm rates were highest in urban areas-680 per 100 000 in Belfast City and 751 per 100 000 in Derry City. Rates of self-harm in Northern Ireland were more than four times higher in the most deprived areas. A positive association with rates of self-harm held for the deprivation domains of employment, crime, education, health and income. There was a moderate association with population density. Some gender differences emerged, with associations with male rates of self-harm more pronounced. CONCLUSION: These findings indicate that self-harm rates are highest for those residing in highly deprived areas, where unemployment, crime and low level of education are challenges. Community interventions tailored to meet the needs of specific areas may be effective in reducing suicidal behaviour.

The involvement of alcohol in hospital-treated self-harm and associated factors: findings from two national registries.

Background: Alcohol is often involved in hospital-treated self-harm. Therefore it is important to establish the role of alcohol in self-harm as well as to identify associated factors, in order to best inform service provision. Methods: Data on self-harm presentations to hospital emergency departments in Ireland and Northern Ireland from April 2012 to December 2013 were analysed. We calculated the prevalence of alcohol consumption in self-harm. Using Poisson regression models, we identified the factors associated with having consumed alcohol at the time of a self-harm act. Results: Alcohol was present in 43% of all self-harm acts, and more common in Northern Ireland (50 versus 37%). The factors associated with alcohol being involved were being male, aged between 25 and 64 years, and having engaged in a drug overdose or attempted drowning. Presentations made out-of-hours were more likely to have alcohol present and this was more pronounced for females. Patients with alcohol on board were also more likely to leave without having been seen by a clinician. Conclusions: This study has highlighted the prevalence of alcohol in self-harm presentations, and has identified factors associated with presentations involving alcohol. Appropriate out-of-hours services in emergency departments for self-harm presentations could reduce the proportion of presentations leaving without being seen by a clinician and facilitate improved outcomes for patients.

Hospital-presenting self-harm and ideation: Comparison of incidence, profile and risk of repetition.

OBJECTIVE: The aim of this study was to describe presentations to hospital as a result of self-harm or suicidal ideation and to examine patterns of repetition. METHOD: Presentations made to hospital emergency departments in Northern Ireland following self-harm and ideation between April 2012 and March 2017 were recorded by the Northern Ireland Registry of Self-harm. Person-based rates per 100,000 were calculated using national population estimates. Risk of repeat attendance to hospital was examined using Kaplan-Meier analyses. RESULTS: A total of 62,213 presentations to emergency departments following self-harm or with ideation were recorded. The rate of self-harm was more than twice the rate of hospital-presenting ideation. Rates of ideation were higher among men, and both self-harm and ideation rates peaked for girls aged 15-19 and men aged 20-24 years. The cumulative probability of repeat attendance to hospital was higher following ideation (52% after 12 months), primarily because 12% of ideation presentations were followed by a subsequent self-harm presentation, whereas 4% of self-harm presentations were followed by ideation. CONCLUSIONS: Our findings indicate that hospital presenters with ideation are at high risk of future self-harm. The transition from ideation to suicidal behaviour is important to consider and research could inform effective and early intervention measures.