Age, mortality and chronic schizophrenia

The Prevalence of Suicide Attempts and Independent Demographic and Clinical Correlates among Chronic Schizophrenia Patients in Agricultural Areas of China

This study investigated the lifetime prevalence of suicide attempts (SA) and independent demographic and clinical correlates in stabilized schizophrenia inpatients. A cross-sectional study was conducted in three psychiatric hospitals in Anhui province, an agricultural province located in east China. Psychopathology and depressive symptoms were assessed using the Positive and Negative Syndrome Scale (PANSS) and Hamilton Depression Rating Scale (HAMD), respectively. A total of 315 stable schizophrenia inpatients were interviewed prior to discharge. The lifetime prevalence of SA was 22.2%. Multiple logistic regression analysis revealed that female gender (P < 0.001, OR = 3.4, 95%CI: 1.9-6.0), being married (P = 0.02, OR = 2.2, 95%CI: 1.1-4.4) and having more severe depressive symptoms (P = 0.014, OR = 1.2, 95%CI: 1.01-1.3) were independently and significantly associated with higher risk of SA. Lifetime SA is common among hospitalized schizophrenia patients living in agricultural areas of China. For suicide prevention, regular assessments, appropriate interventions and clinical management should be integrated into a community-based psychiatric service model for this population.

Suicide attempt and suicidal ideation and their associations with demographic and clinical correlates and quality of life in Chinese schizophrenia patients

OBJECTIVES

This study aimed to examine the prevalence and correlates of lifetime suicide attempts and current suicidal ideation in community-dwelling schizophrenia patients in China.

METHOD

A sample of 540 schizophrenia patients was randomly selected in Beijing, China. All subjects were interviewed using standardized assessment instruments and their basic socio-demographic and clinical data including history of suicide attempts were collected.

RESULTS

The prevalence of lifetime suicide attempts and the point prevalence of suicidal ideation were 12.0%, and 21.1%, respectively. In multiple logistic regression analyses, the presence of lifetime suicide attempt was independently associated with rural residence, having major medical conditions and better social functioning, while higher likelihood of current suicidal ideation was associated with past suicide attempt, the severity of overall psychopathology and depressive symptoms and lower psychological quality of life (QOL).

CONCLUSION

Among Chinese outpatients with schizophrenia, increased current symptoms and poorer QOL were correlated with current suicidal ideation, while demographic factors and indicators of greater social support were mostly correlated with lifetime suicide attempts. This study may help to identify important subgroups of patients with schizophrenia at particularly high risk of suicidal behavior.

Mortality among persons with schizophrenia in Sweden: an epidemiological study

The objective of the study was to analyse 10-year mortality among persons with schizophrenia from an epidemiological perspective. This cohort study included all persons with schizophrenia (n=255) living in the northern catchment area in Uppsala in 1991, and 1275 subjects from the national population register matched for sex, age and living area. The prevalence of schizophrenia was 0.37% and the mortality rate for individuals with schizophrenia was higher than for referents: 23.0% vs. 11.2%. The higher mortality among those with schizophrenia was mainly the result of unnatural causes and cardiovascular disease, especially in men. Excess mortality from cardiovascular disease was more pronounced in middle age, irrespective of gender. Multivariate analysis revealed higher mortality among individuals with schizophrenia living in the city than among those living in less urbanized areas. People with schizophrenia die more often than those without schizophrenia from unnatural causes or circulatory diseases. Individuals with schizophrenia die sooner from circulatory diseases than those without schizophrenia. Having schizophrenia and living in the city also results in higher mortality than having schizophrenia and living in other areas. The risk of early death from circulatory disease needs to be studied in more detail to reveal the potential respective contributions of intrinsic patient vulnerability, lifestyle factors and side-effects from psychotropic drugs.

Sex differences in completed suicide by schizophrenic patients: a meta-analysis

A meta-analysis was conducted on all studies of suicide mortality in follow-up studies of schizophrenic patients that presented data for male and female patients separately. The percentage of deaths from suicide was significantly greater for the male schizophrenic patients than for the female schizophrenic patients in studies where both sexes were included. Regression equations devised to predict the percentage of deaths from suicide after all of the sample had died estimated that 0.50% of male schizophrenic patients would die from suicide as compared to 0.20% of female schizophrenic patients. Suggestions are made for future research.

Characteristics of suicide attempters and nonattempters with schizophrenia in a rural community

In this study, demographic and clinical characteristics of individuals with schizophrenia in a Chinese rural community who had attempted suicide at some time in their lives and those who had not made a suicide attempt were compared. Among individuals with schizophrenia, subjects with (n = 38) and without (n = 472) a lifetime history of suicide attempt were assessed with the Present State Examination. The results indicate that attempters had a significantly younger age, higher level of education, higher rate of lifetime depressed mood and hopelessness, and a larger number of positive symptoms than patients without suicide attempts. The logistic regression models also indicated that hopelessness, the number of positive symptoms and age were the most important predictors. Early interventions focusing on reducing hopelessness and controlling positive symptoms may help reduce the risk of suicide attempts among patients with schizophrenia.

The Psychology and Neurobiology of Suicidal Behavior

Suicide is a leading cause of death, but it is not well understood or well researched. Our purpose in this review is to summarize extant knowledge on neurobiological and psychological factors involved in suicide, with specific goals of identifying areas particularly in need of future research and of articulating an initial agenda that may guide future research. We conclude that from both neurobiological and psychological perspectives, extant research findings converge on the view that two general categories of risk for suicide can be identified: (a) dysregulated impulse control; and (b) propensity to intense psychological pain (e.g., social isolation, hopelessness), often in the context of mental disorders, especially mood disorders. Each of these categories of risk is underlain at least to some degree by specific genetic and neurobiological factors; these factors in general are not well characterized, though there is emerging consensus that most if not all reside in or affect the serotonergic system. We encourage future theorizing that is conceptually precise, as well as epistemically broad, about the specific preconditions of serious suicidal behavior, explaining the daunting array of suicide-related facts from the molecular to the cultural level.

Clinical variables related to suicide attempts in schizophrenic patients: a retrospective study

In this study, we investigated the possible association between clinical or pharmacological variables and suicidal behavior in a sample of chronic schizophrenia or schizoaffective disorder patients. One hundred and three patients with a DSM-III-R diagnosis of chronic schizophrenia or schizoaffective disorder were studied. The sample was subdivided in two subsamples according to the presence/absence of suicidal attempts lifetime. The main demographic and clinical variables retrospectively collected were analyzed and compared between the two groups. Attempters had a significantly higher rate of nicotine abuse or dependence (chi-square=3.900, df=1, p<0.05, Odds Ratio (O.R.)=3.4), were more likely to have or have had lifetime major depressive episodes (chi-square=10.258, df=1, p<0.002, O.R.=6.5), were more likely to have a duration of untreated psychosis (DUP) > or =1 year (chi-square=6.228, df=1, p<0.02, O.R.=12.5), and were more frequently prescribed typical antipsychotics (chi-square=3.979, df=1, p<0.05, O.R.=6.5) than patients without suicidal attempts lifetime. Further investigations on larger samples and with prospective designs are warranted, particularly with respect to the role of early intervention and atypical antipsychotic treatment in reducing suicide risk in schizophrenic patients.

Risk factors for suicide in young people suffering from schizophrenia: a long-term follow-up study

Ten per cent of patients with schizophrenia commit suicide, but assessment of risk is difficult. Large case-control studies with a long follow-up period are needed. These should focus on patients from one age group to give clinicians the details required to identify those at highest risk.We present a case-control study of 63 patients who committed suicide and 63 controls from a consecutive admission series of patients with a diagnosis of schizophrenia. All patients were under the age of 30 at admission.Risk factors for suicide were male gender, chronic illness with frequent relapses (OR 6.0), frequent short hospitalisation, a negative attitude towards treatment (OR non-compliance 7.0), impulsive behaviour (OR acting out 6.4, OR involuntary commitment 17), parasuicide (OR suicide attempt 4.8, OR highly lethal suicide attempt 11), high pre-morbid IQ (OR 4.3), psychosis (OR 7.0) and depression (OR 36). However, early onset of a defect state (OR 6.3) and a daily activity (OR 4.2) were protective factors. Identified risk factors could help clinicians to target high-risk patients and form the basis for interventions aimed at reducing suicide.

Mortality and causes of death in schizophrenia in Stockholm county, Sweden

A study of mortality for all patients with a first hospital diagnosis of schizophrenia in Stockholm County, Sweden, during 1973 to 1995 was performed, by linking the in-patient register with the national cause-of-death register. Overall and cause-specific standardized mortality ratios (SMR) were calculated by 5-year age classes and 5-year calendar time periods. The number of excess deaths was calculated by reducing the observed number of deaths by those expected. Our results confirmed a marked increase in mortality in schizophrenia both in males and females. Natural (somatic) causes of death was the main cause of excess deaths, with more than half of the excess deaths in females, and almost half of the excess deaths in males. Suicide was the specific cause of the largest number of excess deaths in males, while in females it was cardiovascular disease. SMRs were increased in both natural and unnatural causes of death, with 2.8 for males and 2.4 for females for all deaths, but were highest in suicide with 15.7 for males and 19.7 for females, and in unspecified violence with 11.7 for males and 9.9 for females. SMRs in suicide were especially high in young patients in the first year after the first diagnosis.

Death rates in 71 men with antisocial personality disorder. A comparison with general population mortality

Mortality data are presented from a 16- to 45-year follow-up study of 71 men with antisocial personality disorder. Death ascertainment was made through both a personal follow-up and use of the National Death Index. Comparisons were made with the mortality experience of the general population of the state of Iowa by using gender and age standardized mortality ratios. Seventeen men died (24%) died during the follow-up. Antisocial men younger than 40 years were at excessive risk for premature death (standardized mortality ratio [SMR] = 33, P < 0.25): men between ages 40 and 60 years also appeared to be at risk for premature death, although the excess was not statistically significant. Three subjects (18% of all deaths) died of complications from diabetes mellitus (SMR = 14, P < 0.05). Deaths were spread out among the four decades of follow-up. The findings and their implications are discussed.

Mortality and causes of death in first admitted schizophrenic patients

Although many studies have shown an increased mortality in schizophrenic patients, the literature provides little information about mortality from specific causes in relation to age, gender, and duration of illness. This study examined mortality and causes of death in a total national sample of 9156 first admitted schizophrenic patients. Suicide accounted for 50% of deaths in men and 35% of deaths in women. Suicide risk was particularly increased during the first year of follow-up. Death from natural causes, with the exception of cancer and cerebrovascular diseases, was increased. Suicide risk during the first year of follow-up increased by 56%, with a 50% reduction on psychiatric in-patient facilities. The study confirms that mortality in schizophrenia is still markedly elevated, and the finding of an increasing suicide risk may be an indicator of some adverse effects of deinstitutionalisation.

Mortality in DSM-IIIR schizophrenia

Mortality was investigated in 356 DSM-IIIR schizophrenics admitted to a university psychiatric hospital over a 12-year period. Determination of death was made through a record-linkage process and observed death was compared with the mortality experience of the general population of the State of Iowa. Schizophrenics had nearly a three-fold increase in overall mortality. Mortality was primarily attributable to unnatural causes of death, particularly suicide, which was more than twenty-three times greater than expected. Mortality was greater in schizophrenic patients younger than 40 years and during the early portion of follow-up. Studies of mortality in psychiatric patients continue to be important, particularly as diagnostic criteria become better refined.