Suicide in Texas: a cohort analysis of trends in suicide rates, 1945-1980

Recent clusters of teenage suicides in Texas suburban communities have focused national attention on the rise in teenage suicidal behavior. This study sought to clarify the teenage suicide phenomenon by using a cohort method of data analysis. Beginning with suicide rates for white males aged 15-19 in 1945, suicide rates were calculated and plotted for each 5-year age cohort entering the late teenage years, when suicide risk factors dramatically increase. Our analysis of these cohort patterns confirmed the ever-rising risk factor associated with the ages of 15-19. This trend is consistent with many studies suggesting that teenage suicide is a function of socioeconomic and psychological factors operating across community and national boundaries. In addition, our study revealed that as white males 15-19 years of age in 1945 aged, their suicide rates also increased, confirming earlier findings that the suicide risk factor increases with age. In fact, Texas data for 1980 revealed that older persons, not teenagers, had the highest suicide rates-a finding that confirms other studies' results. Finally, Texas cohort patterns for suicide revealed the recent curvilinearity tendencies of older adult male suicide rates. By 1980 Texas data revealed a bimodal distribution of high suicide risk, with white males in their late 20s and ages 55 and over having the highest rates.     

Stereotypes of Suicide Causes for Three Age/Gender Cohorts

On the basis of open-ended questions and interviews using vignettes of fictitious male and female suicide committers of ages 15, 40, and 60, a list of reasons attributed to their suicides was obtained. From this list, a 45-item (5-point Likert scale) checklist was developed. This checklist was administered to a total of 232 respondents in a factorial design. The subjects were asked to respond to items concerning the fictitious suicide committer of their own age and gender, as well as to items for the other two age/gender cohorts. Thus, two groups of subjects answered the checklist. One group of respondents rated the checklist separately for the 3 age cohorts of fictitious male committers (15-year-old male, 40-year-old male, and 60-year-old male). The other group rated the checklist for the three fictitious female committers. The rank of endorsement for each cause was tabulated separately for age/gender cohorts, and indices of overall agreement were computed. The results indicated high agreement among all respondents on the causes of suicide considered to be most likely for a given cohort, as well as a distinct differentiation among cohorts and gender groups. The findings were discussed with reference to cultural stereotypes about suicide causes, and arguments were elaborated on the contribution of these shared beliefs to an individual's decision to commit suicide.     

Suicide attempts among juvenile delinquents; the contribution of mental health factors.

This study examined which, if any, of four variables (depression, hopelessness, conduct problems, substance abuse) differentiated suicide attemptors from nonattemptors among incarcerated juvenile delinquents. Fifty-one male youth served as subjects. The predictor variables were collected by either a standardized interview or an orally administered questionnaire. Youth self-report data regarding suicide attempts were collected. The results indicated that depression served as a predictor of suicide attempts but only in white, not black, youth. Suicide attempts also were reported three times more often in white than black participants. Implication, as well as limitations, of the findings are discussed.     

Anhedonia and suicide: a 6.5-yr. follow-up study of patients hospitalised for a suicide attempt

This was a prospective follow-up study of suicidal patients to assess the association of anhedonia, depression, and completed suicides. Survival analysis as well as Cox's regression makes it possible to weigh the influence of variables. A cohort of 106 patients (81 women, 25 men, M age=33 yr., SD=9.9) admitted to medical or surgical departments after a suicide attempt was followed during a 6.5-yr. mean observation period. In total, 6.7% of patients completed suicide. High proportion of male subjects (71.4%) and low anhedonia, assessed on the Physical Anhedonia Scale, decreased survival time of the cohort and characterized subjects who deceased by suicide. These results suggested that the people who completed suicide were characterized by low anhedonia. Further research is needed on people who attempt suicide and present with specific psychiatric diagnoses.     

Changing age patterns of U.S. male and female suicide rates, 1934-1983

Changes in the age patterns of U.S. male and female suicide rates from 1934 to 1983 are examined, using official suicide data. Among whites, the age patterns of male and female suicide rates have become less concordant since about 1960. In contrast, the age patterns of nonwhite male and female suicide rates have become more concordant since the mid-1950s. A review of sociological theories of suicide identifies problems in accounting for such changes--problems stemming in part from what has been a theoretical emphasis on cross-sectional relations.     

A model for the description and interpretation of suicide prevention.

Views about suicide prevention are based on underlying beliefs about the origins of problems and basic concepts about humankind. These implicit theories have an effect on prevention practices. Making these views explicit is one of the keys for the further development of suicide prevention. In this study a paradigm for analyzing suicide prevention of means of a coding frame and interpreting findings by means of theoretical models of prevention was elaborated. The analysis was based on empirical data consisting of definitions of prevention given by psychologists (N = 34) participating in the national suicide prevention project in Finland. The study demonstrates that suicide prevention can be differentiated at the operational level by means of the analysis method generated. Moreover, the findings can be interpreted according to theoretical criteria. Views expressed by the psychologists seemed to correspond largely to central features of current prevention models. Furthermore, the data can be seen to serve as an empirical validation of these models. Suicide prevention proved to be a multifactorial concept manifesting mainly process theory and interactional explanations of suicidality, and prevention practices fell into a simple typology of four categories.     

The Frequency of Suicide in Individual Danish Birth Cohorts, 1922–1991

In recent years many suicidologists have based their epidemiological studies on suicide on theories assuming that people born within the same period of time will follow the same suicidal patterns throughout their lives, and that variations in the annual rate of suicide will, therefore, reflect systematic differences between cohorts. Cohort analysis carried out on Danish data showed, however, that although some differences could be found as to the course of events during the life span of the cohorts and also when the material was adjusted for sex, no significant differences could be found between various birth cohorts in the total rates of suicide. The authors argue that the reason for this is that a cohort effect is only one of three dimensions of an analytical tool, namely, Age–Period–Cohort (APC) analysis, and that the balance between the three effects changes over time.     

Suicide mortality among Kentucky farmers, 1979-1985

Farmers may be at high risk for suicide because of their social environment and because of chemical exposure resulting in neurotoxic effects in the workplace. Age-specific suicide rates are compared for Kentucky white farmers, Kentucky white males, and U.S. white males. Data for suicides occurring in Kentucky represent the 7-year period between 1979 and 1985; data for the United States suicides represent the period 1980. Overall, suicide rates were highest for Kentucky farmers, followed by Kentucky males and then by U.S. males. All males were most likely to use firearms as the mode of suicide, but the farmers used firearms significantly more often than the U.S. males, as did the other Kentucky males. These findings and other evidence support the need to assess suicide rates in this occupational group in other states, to begin suicide prevention programs for Kentucky, and to work to identify risk factors contributing to the Kentucky farm suicides.     

Ethnicity and bender visual motor gestalt test performance

This study compared differences in the Bender-Gestalt mean error scores of the 1,938 black, Hispanic, and white children in the System of Multicultural Pluralistic Assessment (SOMPA) standardization sample. A two-way between groups unweighted means ANOVA was performed on the error scores for the seven age groups and for the three ethnic groups. Significant differences were found for both main effects. Black children performed lower than (a) white children at every age level and (b) Hispanic children at all except one age level. Hispanic children performed similarly to white children at all except two age levels. Results support those reported by other investigations, but do not offer any clues to account for the findings.     

Black suicide in the seventies: current trends.

In the most recent decade, the suicide rate among young blacks has risen to the point where it is nearly as high as that of their white peers. The data in this analysis reflect the striking contrast in age distribution in the suicide patterns of whites and blacks. Whereas white suicide increases in direct relation with advancing chronological age, suicide among blacks reaches its peak in the youthful years. Current statistics fail to reflect a "dramatic" or significant increase in the suicide rate of black women. Contrary to popular belief, black men in their twenties represent the most suicide-prone group. Young black males have been committing suicide at a steadily increasing rate during the past six years. Regionally, black suicide rates are highest in the North and West and lowest in the South. White suicide rates reflect a slightly different regional distribution. The highest rates occur in the West and the lowest in the North.     

Young female violent death trends in the general population during the Vietnam era.

Five birth cohorts of young women who became age 20 before, during, and after the Vietnam War were selected for this study of motor vehicle accident, suicide, and homicide between ages 13 and 30. Suicide and homicide increased strongly in succeeding years (1953-1986). Motor vehicle accident rates were affected primarily by age. But age, birth cohort membership, and age x cohort interaction significantly affected suicide and homicide rates, with the 19-24-year-old age range most greatly affected. The correlation between suicide and homicide risk (r = .92) was similar to that for young males (r = .95) and suggested a common source of pathogenesis for both genders.     

Adolescent suicidal behaviors as a function of depression,hopelessness, alcohol use,and social support: A longitudinal investigation

Surveyed two high school cohorts (ns=698 and 283) to study independent prospective predictors of adolescent suicidal behaviors (thoughts, communicatio to others, attempts). Within each cohort, there were two measurements conducted 6 months apart. Structural equation models were tested, with depressive symptoms, hopelessness, alcohol consumption, social support, and gender serving as predictors. In the larger cohort, depression predicted later levels of all three suicidal behaviors controlling for baseline suicidal behaviors. Also, suicidal thoughts predicted later communications, and suicide attempts predicted future thoughts. In the smaller cohort, alcohol consumption predicted all three suicidal behaviors at the later measurement, whereas depression was predictive only of later thoughts. Major issues regarding prevention, theories of suicide and negative affect, and methodological/analytical approaches were discussed.     

Sex-role change, anomie and female suicide: a test of alternative Durkheimian explanations.

Durkheim's influential book, Suicide, provides general (economic) anomie, conjugal anomie, and sex-role convergence explanations of changes in suicide rates under conditions of social change. We used trend analyses of American suicide rates and female/male suicide ratios from 1950 to 1984 and the regression of the ratios on female educational attainment, white female labor force participation, white fertility rates, and divorce rates to examine these explanations. The general anomie explanation of female suicide trends is supported for the middle-aged (30 to 54 years) but not for the young (10 to 30 years) or the elderly (55 to 74 years). The conjugal anomie proposition is at best supported for age groups between 15 and 44 when general anomie is not pronounced. The role convergence explanation is rejected for all 13 5-year-age-groups. General anomie may not be a viable explanation of suicide trends for groups actively supporting relevant social changes or not yet tradition-bound or for groups whose retirement status reduces the importance of some social changes.     

Per Capita Alcohol Consumption and Suicide Rates in the U.S., 1950–2002

The aim of this paper was to estimate how suicide rates in the United States are affected by changes in per capita consumption during the postwar period. The analysis included Annual suicide rates and per capita alcohol consumption data (total and beverage specific) for the period 1950–2002. Gender‐ and age‐specific models were estimated using the Box‐Jenkins technique for time series analysis. No significant estimate was found for males. For females the total alcohol estimate (0.059) was significant at the 10% level whereas the spirits estimate was significant with an effect of 0.152. The results imply that a change in U.S. per capita consumption would result in a change in female suicide rates, whereas the male rates would not be affected.     

Temporal variation in Irish suicide rates

Using Irish suicide data for the period 1990-1998, the independent effects of month and day adjusting for age, gender, and calendar year effects and distinguishing between holiday and working Mondays were assessed. The male suicide rate was significantly higher on working Mondays (+31%) and Saturdays (+14%), and during April, June, and August (+17%), after adjustment for the other variables. In contrast, female suicide rates were higher only in August (+35%) and exhibited no day effect. Teenage men had a greater elevation of risk on Saturdays, Sundays, and both working and holiday Mondays than any other group. The study findings should be taken into account in the planning of specialized health care services and helplines for suicidal people. Furthermore, the findings provide support for Gabennesch's (1988) broken promise theory and the relationship between dysfunctions of the serotonergic system and suicidal behavior.     

Clinicopathological findings of suicide in the elderly: three cases

The neuropathological correlates of suicide in older persons have received little research attention. Our recent study of elderly suicide victims from an Australian forensic medicine department (n = 143), unlike a previous case-control study, did not find an increased prevalence of Alzheimer's disease (AD) in older persons who committed suicide despite a history of dementia in 6.3%. Both studies were limited to the examination of AD-related pathology by the availability of tissue. We present clinicopathological data on three cases from our study for whom autopsy findings were available. These cases included: a community-dwelling male in his early eighties with dementia who was found to have multiple cortical and striatal lacunes and glial scars, small vessel cerebrovascular disease (SVD) and AD-related pathology; a community-dwelling male in his mid-seventies with depression and loss of concentration, with brainstem predominant Lewy body disease (LBD) and AD-related pathology; and a female nursing home resident in her nineties with a history of stroke and prior suicide attempts who was found to have infarcts and SVD in frontal regions. Neuropathological findings in elderly suicide victims may include multiple neurodegenerative pathologies. The burden and distribution of neurodegenerative diseases apart from AD, including SVD and LBD, should be assessed as possible pathophysiological factors contributing to late life suicide.     

A Study of Suicide and Socioeconomic Factors

The topic of suicide has long been an important socioeconomic issue studied in many countries. Suicides inject an atmosphere of unrest into society, and media attention furthers that social uneasiness. From the viewpoint of economics and management, suicide is a waste of human resource: it decreases the labor force in society and deteriorates human capital. This paper provides a series of analyses of suicide rate based on theoretical reasoning and empirical approaches. Aggregate data from G7 countries are obtained and stacked into panel data for analysis. Data are collected for different age groups. Even though suicide issues have been extensively discussed in the past, newly developed econometric tools are applied to her. Beyond previously recognized relationships between economic factors and suicide rates findings include that unemployment strikes men more than women in terms of psychological pressure: for middle age or older women, unemployment may even be positive for the entire family; and female labor force participation exerts pressure on male counterparts and increases its suicide rate. As a result, a low income family with an unemployed man and an employed woman is at high risk for adult male suicide.     

Sweden: income and suicide

Previous publications have reported two conflicting patterns describing the relationship between income and suicide in Sweden; positive and negative. Methodologically the studies have differed, and the analysis has been limited to a few areas. To better understand the relationship, a nationwide, cross-sectional, ecological study of the 290 municipalities in Sweden was planned. OLS regression analyses showed the overall and female suicide rates were negatively related to income, while the effect on male suicide rates was not statistically significant. The results confirm earlier findings of a negative relationship between income and suicide.     

Suicide in the media: a quantitative review of studies based on non-fictional stories

Research on the effect of suicide stories in the media on suicide in the real world has been marked by much debate and inconsistent findings. Recent narrative reviews have suggested that research based on nonfictional models is more apt to uncover imitative effects than research based on fictional models. There is, however, substantial variation in media effects within the research restricted to nonfictional accounts of suicide. The present analysis provides some explanations of the variation in findings in the work on nonfictional media. Logistic regression techniques applied to 419 findings from 55 studies determined that: (1) studies measuring the presence of either an entertainment or political celebrity were 5.27 times more likely to find a copycat effect, (2) studies focusing on stories that stressed negative definitions of suicide were 99% less likely to report a copycat effect, (3) research based on television stories (which receive less coverage than print stories) were 79% less likely to find a copycat effect, and (4) studies focusing on female suicide were 4.89 times more likely to report a copycat effect than other studies. The full logistic regression model correctly classified 77.3% of the findings from the 55 studies. Methodological differences among studies are associated with discrepancies in their results.     

Mortality of geriatric and younger patients with schizophrenia in the community

Little is known about the differences in mortality among non-institutionalized geriatric and younger patients with schizophrenia. In this study long-term mortality and suicidal behavior of all the geriatric (age > or = 65 years), middle-age (age 41-64 years), and young (age 15-40 years) subjects with schizophrenia living in a Chinese rural community were compared. A 10 year follow-up investigation among a 1994 cohort (n = 510) of patients with schizophrenia was conducted in Xinjin County, Chengdu, China. Compared with young subjects, geriatric subjects with schizophrenia were more likely to be female, have more previous physical illness, never accepted treatment, and practice religious (p < or = 0.01). There were no significant differences of suicide attempts among the three groups. Young subjects had a higher rate of suicide (1,033.8 per 100,000 person-years), and geriatric subjects had a higher rate of deaths due to other causes (accident and natural causes) (4,314.2 per 100,000 person-years). Standardized mortality ratios for both suicide and deaths due to other causes were highest in young subjects and the lowest in geriatric subjects. Patients with schizophrenia in all age groups had a marked increase in mortality and suicide. Specific intervention strategies for decreasing mortality and suicide should be developed for patients with schizophrenia in different age groups.