Pessimistic, anxious, and depressive personality traits predict all-cause mortality: the Mayo Clinic cohort study of personality and aging.

OBJECTIVE: To study the association between several personality traits and all-cause mortality. METHODS: We established a historical cohort of 7216 subjects who completed the Minnesota Multiphasic Personality Inventory (MMPI) for research at the Mayo Clinic from 1962 to 1965, and who resided within a 120-mile radius centered in Rochester, MN. A total of 7080 subjects (98.1%) were followed over four decades either actively (via a direct or proxy telephone interview) or passively (via review of medical records or by obtaining their death certificates). We examined the association of pessimistic, anxious, and depressive personality traits (as measured using MMPI scales) with all-cause mortality. RESULTS: A total of 4634 subjects (65.5%) died during follow-up. Pessimistic, anxious, and depressive personality traits were associated with increased all-cause mortality in both men and women. In addition, we observed a linear trend of increasing risk from the first to the fourth quartile for all three scales. Results were similar in additional analyses considering the personality scores as continuous variables, in analyses combining the three personality traits into a composite neuroticism score, and in several sets of sensitivity analyses. These associations remained significant even when personality was measured early in life (ages 20-39 years). CONCLUSIONS: Our findings suggest that personality traits related to neuroticism are associated with an increased risk of all-cause mortality even when they are measured early in life.

CSF 5-HIAA and DST non-suppression--orthogonal biologic risk factors for suicide in male mood disorder inpatients.

Two biomarkers of suicide risk; non-suppression in the dexamethasone suppression test (DST) and low 5-hydroxyindoleacetic acid (5-HIAA) in the cerebrospinal fluid (CSF) have been reported to be predictors of suicide in mood disorders. The interrelation of the two systems seems to be different in suicide attempters compared with depressed inpatients who have not made a suicide attempt, indicating that the two biomarkers may be seen as independent. This investigation examined the interrelation of low CSF 5-HIAA and DST non-suppression in suicide victims with mood disorder. Fifty-eight mood disorder inpatients not receiving any treatment with antidepressants underwent lumbar puncture and the DST. Plasma cortisol levels at 8:00 a.m., 4:00 p.m. and 11:00 p.m. were analysed in relation to CSF 5-HIAA. All patients were followed up for causes of death and suicides were verified with death certificates. During follow-up (mean 21 years), 11 (19%) patients had committed suicide. In male suicide victims (n=6), the serum cortisol level at 4:00 p.m. showed a significant positive correlation with CSF 5-HIAA. Low CSF 5-HIAA predicted all early suicides (within 1 year), whereas all males who committed suicide after 1 year were DST non-suppressors. In female suicide victims (n=5), the post-DST serum cortisol did not correlate with CSF 5-HIAA. Low CSF 5-HIAA and DST non-suppression are orthogonal biologic risk factors for suicide in male mood disorder inpatients. CSF 5-HIAA is associated with short-term suicide risk; dysregulation of the hypothalamic-pituitary-adrenal axis seems to be a long-term suicide predictor.

ROC analysis of dexamethasone suppression test threshold in suicide prediction after attempted suicide.

Dysregulation of the hypothalamic-pituitary-adrenal (HPA) axis function is associated with suicidal behavior. In suicide attempters with mood disorder, the non-suppressor status in the dexamethasone suppression test (DST) is associated with suicide indicating that HPA-axis hyperactivity is a biological risk factor for suicide and may be a useful predictor. The threshold of 5 microg/dl for cortisol levels measured at 08:00 a.m. or 4:00 p.m. following dexamethasone at 11:00 p.m. to define the DTS nonsuppression was derived as being optimal for the separation of melancholia and nonmelancholic conditions rather than the prediction of suicide. A different threshold may offer a better identification of suicide. The aim of this study was to find the optimal threshold level of post DST plasma cortisol at 4 p.m. for suicide prediction using receiver operating characteristics (ROC) analysis. A cohort of 106 depressed inpatients with an index suicide attempt admitted to the department of Psychiatry at the Karolinska University Hospital between 1980 and 2000, were submitted to DST and followed up for causes of death. During the follow-up (mean 17 years), 25 suicides (24%) were identified. The ROC analysis revealed that a lower threshold of 3.3 microg/dl for the nonsuppressor status predicted 17 of 25 suicides (sensitivity of 68%) compared with 15 of 25 suicides (sensitivity 60%) with a conventional threshold of 5 microg/dl at 4:00 p.m. In male suicide attempters the lower threshold for pathological DST result (3.3 microg/dl) changed the Odds ratio from 6.7 till 18. In female suicide attempters a higher threshold (7.3 microg/dl) optimised the value of DST as a biological test for suicide prediction indicating a gender difference.

The dexamethasone suppression test as a predictor of suicidal behavior in unipolar depression.

BACKGROUND: Non-suppression on the dexamethasone suppression test (DST) in unipolar depression has been found to be associated with completed suicide, with less consistent data for attempted suicide and hospitalizations for suicidality. The purpose of this study was to examine DST non-suppression as a predictor of these three aspects of suicidal behavior. METHODS: Records were reviewed for 101 patients who met criteria for major depressive disorder and/or dysthymic disorder and had a DST performed. All patients were treated naturalistically and were followed for an average of 2 years. DST suppressors and non-suppressors were compared with respect to three outcomes: (1) completed suicide; (2) attempted suicide; and (3) hospitalizations for suicidality. RESULTS: DST non-suppressors were significantly more likely to have completed suicide or be hospitalized for suicidality than DST suppressors, with a non-significant trend for attempts. Total suicidal events were also significantly more frequent in the non-suppressor group. LIMITATIONS: Axis II diagnoses and severity of illness were not assessed. Knowledge of DST results may have influenced the decision to hospitalize patients. CONCLUSIONS: DST non-suppression identifies unipolar depressed patients with a higher risk for future suicide completion or hospitalization for suicidality. Performance of DST upon initiation of treatment may be a useful adjunct in identifying suicidal risk.

Survival of elderly Finns suffering from dysthymic disorder: a community study.

The survival of aged Finns suffering from dysthymic disorder (DSM-III criteria) was assessed in two cohorts (60+ yrs and 65+ yrs) in a longitudinal epidemiological study conducted in Ahtäri in western Central Finland from 1984 onwards. The mortality of dysthymic persons (N = 214 and N = 115) was compared to that of the non-depressed population living in the same municipality (N = 982 and N = 853). Two follow-up periods (6 yrs and 11.5 yrs) were used for the first cohort, and one (6 yrs) for the second cohort. The Kaplan-Meier procedure and Mantel-Cox statistics followed by Cox proportional hazards models were used in the analyses. The occurrence of dysthymic disorder in men was related to higher mortality in both cohorts during all follow-up periods. In women, the occurrence of dysthymic disorder was related to higher mortality in the first cohort during the follow-up of 11.5 years, and in the second during the follow-up of 6 years. When age, sex, marital status, education, smoking, physical health and functional abilities were taken into account in the Cox proportional hazards models, high age, male sex, smoking, low educational level, the use of more than two medicines and lowered functional abilities emerged as predictors of mortality in the first cohort during both follow-up periods. In the second cohort, high age male sex, smoking, poor physical health and lowered functional abilities emerged as predictors. The results suggest that the higher mortality of the aged suffering from dysthymic disorder is explained by the high occurrence of somatic diseases and disabilities in dysthymic persons. They do not suggest that there might exist biochemical factors in the aetiology of dysthymic disorders that would increase mortality. Nor do they give any evidence to suggest that dysthymic disorders might be precursors of somatic diseases increasing mortality.

[Dysthymia and cyclothymia--serious consequences of rarely diagnosed disorders]. / Dysthymie und Zyklothymia--folgenreich und kaum diagnostiziert?

Dysthymia and cyclothymia are chronic affective disorders with a minimum duration of 2 years. Both ICD-10 and DSM-IV define cyclothymia as a bipolar disorder with low intensity. This disorder is rare and little research has been done on it. Its economic and social consequences vary from case to case. In contrast dysthymias, chronic depressive disorders, are frequent (prevalence 3-6%) and cause considerable distress. They have serious economic and social consequences, which are comparable to those caused by other chronic conditions such as arthritis or diabetes mellitus. Despite widely held conviction a majority of dysthymias improves under consequent pharmaco- and psychotherapy.

1995 IPA/Bayer Research Awards in Psychogeriatrics. Late-life consequences of affective spectrum disorder.

Recent research suggests that affective disorder is associated with increased mortality and physical morbidity, but the reasons for this association remain uncertain. This report describes a 50-year prospective study of 240 men evaluated from the time they were university students in 1940-1942. A family history of mental illness was obtained and the men's habits, psychological adjustment, and marital and occupational satisfaction were followed every 2 years and their objective physical health was tracked every 5 years until age 70. Twenty-five men were identified as having affective spectrum disorder prior to age 53. Of the variables studied, the presence of affective spectrum disorder was the most powerful predictor of poor psychosocial outcome at age 65 and one of the most powerful predictors of poor physical health. Alcohol abuse and cigarette abuse accounted for the observed increased rates of heart disease and cancer. When alcohol abuse, smoking, and suicide were controlled for, affective disorder made a significant contribution to physical morbidity by age 70, but not to mortality from natural causes. Affective spectrum disorder, even in an educated population without antisocial trends, carries a profound negative risk to late-life physical and social adjustment.