Management and costs of deliberate self-poisoning in the general hospital: A multi-centre study

The economic burden of deliberate self-poisoning: insight from a tertiary hospital in the Free State Province, South Africa

Suicide rate in South Africa is contentiously rated among the top ten highest in the world. Deliberate self-poisoning (DSP) remains one of the common methods for suicide. The management of DSP often impose a significant economic burden on health services with a growing loss of resources. However, studies on the financial implications associated with the management of DSP cases in South Africa are scarce and no known study has investigated the financial implication of managing DSP in a resource strained health system as obtained in the Free State Department of Health (FSDoH). This present study investigated the financial implication of managing DSP in a state regional hospital in the Free State province and proffer efficient ways of utilizing limited available resources in DSP management. This was a descriptive, retrospective cross-sectional study in which clinical records of 212 DSP cases which presented during an 18-month period at the emergency department of a state regional hospital were reviewed. The incidence of DSP was higher among individuals who are females (66% females vs 34% males), unemployed (65.6%) in the age group 20-29 years (44.8%). DSP management cost an average of R50, 000 per month. Wasteful expenditures such as blanket requests for laboratory investigation accounted for 19% of the cost. These findings agree with prior studies that have reported that managing DSP could pose a huge direct financial burden on hospital expenditure and health service delivery. If future cost containment and quality of care are to be achieved in the Free State province, efforts must be made by healthcare personnel to combat wasteful and unnecessary expenditure during patient management. We hope that recommendations proffered by this current study will alleviate the financial burden of DSP management in the province.

Long-term impact of the expansion of a hospital liaison psychiatry service on patient care and costs following emergency department attendances for self-harm

BACKGROUND

In September 2014, as part of a national initiative to increase access to liaison psychiatry services, the liaison psychiatry services at Bristol Royal Infirmary received new investment of £250 000 per annum, expanding its availability from 40 to 98 h per week. The long-term impact on patient outcomes and costs, of patients presenting to the emergency department with self-harm, is unknown.

AIMS

To assess the long-term impact of the investment on patient care outcomes and costs, of patients presenting to the emergency department with self-harm.

METHOD

Monthly data for all self-harm emergency department attendances between 1 September 2011 and 30 September 2017 was modelled using Bayesian structural time series to estimate expected outcomes in the absence of expanded operating hours (the counterfactual). The difference between the observed and expected trends for each outcome were interpreted as the effects of the investment.

RESULTS

Over the 3 years after service expansion, the mean number of self-harm attendances increased 13%. Median waiting time from arrival to psychosocial assessment was 2 h shorter (18.6% decrease, 95% Bayesian credible interval (BCI) -30.2% to -2.8%), there were 45 more referrals to other agencies (86.1% increase, 95% BCI 60.6% to 110.9%) and a small increase in the number of psychosocial assessments (11.7% increase, 95% BCI -3.4% to 28.5%) per month. Monthly mean net hospital costs were £34 more per episode (5.3% increase, 95% BCI -11.6% to 25.5%).

CONCLUSIONS

Despite annual increases in emergency department attendances, investment was associated with reduced waiting times for psychosocial assessment and more referrals to other agencies, with only a small increase in cost per episode.

Incidence and general hospital costs of self-harm across England: estimates based on the multicentre study of self-harm

AIMS

The aim of this study was to estimate incidence of self-harm presentations to hospitals and their associated hospital costs across England.

METHODS

We used individual patient data from the Multicentre Study of Self-harm in England of all self-harm presentations to the emergency departments of five general hospitals in Oxford, Manchester and Derby in 2013. We also obtained cost data for each self-harm presentation from the hospitals in Oxford and Derby, as well as population and geographical estimates from the Office for National Statistics. First, we estimated the rate of self-harm presentations by age and gender in the Multicentre Study and multiplied this with the respective populations to estimate the number of self-harm presentations by age and gender for each local Clinical Commissioning Group (CCG) area in England. Second, we performed a regression analysis on the cost data from Oxford and Derby to predict the hospital costs of self-harm in Manchester by age, gender, receipt of psychosocial assessment, hospital admission and type of self-harm. Third, the mean hospital cost per age year and gender were combined with the respective number of self-harm presentations to estimate the total hospital costs for each CCG in England. Sensitivity analysis was performed to address uncertainty in the results due to the extrapolation of self-harm incidence and cost from the Multicentre Study to England.

RESULTS

There were 228 075 estimated self-harm presentations (61% were female) by 159 857 patients in 2013 in England. The largest proportions of self-harm presentations were in the age group 40-49 years (30%) for men and 19-29 years (28%) for women. Associated hospital costs were approximately £128.6 (95% CI 117.8-140.9) million in 2013. The estimated incidence of self-harm and associated hospital costs were lower in the majority of English coastal areas compared to inland regions but the highest costs were in Greater London. Costs were also higher in more socio-economically deprived areas of the country compared with areas that are more affluent. The sensitivity analyses provided similar results.

CONCLUSIONS

The results of this study highlight the extent, hospital costs and distribution of self-harm presentations to hospitals in England and identify potential sub-populations that might benefit from targeted actions to help prevent self-harm and assist those who have self-harmed. They can support national as well as local health stakeholders in allocating funds and prioritising interventions in areas with the greatest need for preventing and managing self-harm.

The co-occurrence of aggression and self-harm: systematic literature review

BACKGROUND

Epidemiological research supports an association between aggression and self-harm through data on the frequency with which individuals exhibit both behaviours. Unbiased evidence, however, is needed to draw conclusions about the nature and extent of co-occurrence.

METHOD

Systematic review of published studies was undertaken to evaluate whether or not the frequency with which aggression and self-harm co-occur is beyond that which would be expected by chance. Outcome measures included: (a) between-group differences on a standardised aggression/self-harm measure - the groups defined by scores on a measure of the other behaviour; (b) correlations between the two behaviours; (c) co-occurrence rates in populations defined by the presence of either behaviour; (d) co-occurrence rates in populations not defined by either behaviour. Odds ratios were calculated for studies presenting complete frequency data.

RESULTS

123 studies, some yielding more than one type of result, met the inclusion criteria. Most case-control studies found elevated levels of aggression in self-harming populations (or self-harm in aggressive populations) compared to controls. The majority of correlational, co-occurrence rate, and odds ratio data found aggression and self-harm to be associated.

LIMITATIONS

Results were subject to descriptive synthesis only and thus, unable to report an overall effect size.

CONCLUSIONS

Evidence suggests that aggression and self-harm frequently co-occur. Such evidence necessitates more theoretical discussion and associated research on the source and nature of co-occurrence. Nonetheless, individuals who present with one behaviour may be considered an 'at-risk' group in terms of exhibiting the other. Such evidence holds implications for practice (e.g. risk assessment).

Self-harm in England: a tale of three cities. Multicentre study of self-harm

BACKGROUND

Self-harm is a major healthcare problem in the United Kingdom, but monitoring of hospital presentations has largely been done separately in single centres. Multicentre monitoring of self-harm has been established as a result of the National Suicide Prevention Strategy for England.

METHOD

Data on self-harm presentations to general hospitals in Oxford (one hospital), Manchester (three hospitals) and Leeds (two hospitals), collected through monitoring systems in each centre, were analysed for the 18-month period March 2000 to August 2001.

RESULTS

The findings were based on 7344 persons who presented following 10,498 episodes of self-harm. Gender and age patterns were similar in the three centres, 57.0% of patients being female and two-thirds (62.9%) under 35 years of age. The largest numbers by age groups were 15-19 year-old females and 20-24 year-old males. The female to male ratio decreased with age. Rates of self-harm were higher in Manchester than Oxford or Leeds, in keeping with local suicide rates. The proportion of patients receiving a specialist psychosocial assessment varied between centres and was strongly associated with admission to the general hospital. Approximately 80% of self-harm involved self-poisoning. Overdoses of paracetamol, the most frequent method, were more common in younger age groups, antidepressants in middle age groups, and benzodiazepines and sedatives in older age groups. Alcohol was involved in more than half (54.9%) of assessed episodes. The most common time of presentation to hospital was between 10 pm and 2 am.

CONCLUSIONS

Multicentre monitoring of self-harm in England has demonstrated similar overall patterns of self-harm in Oxford, Manchester and Leeds, with some differences reflecting local suicide rates. Diurnal variation in time of presentation to hospital and the need for assessment of non-admitted patients have implications for service provision.