What made me feel better? Patients' own explanations for the improvement of their depression.

BACKGROUND: Depression is common among primary care patients and the usual treatment often consists of antidepressant medication and supportive counselling/follow-ups. Previous studies have shown that patients and professionals have different beliefs about treatment, which in turn can decrease acceptance of the diagnosis, compliance and treatment outcome. AIMS: The purpose of this study was to investigate previously depressed patients' beliefs about the cause of their improvement. METHODS: Depressed primary care patients (n = 184) who considered themselves improved at follow-up answered an open-ended question about what they believed had made them better. Among these 117 patients had, in addition to treatment as usual, participated in an intervention with patient education and group counselling (the Contactus programme), whereas 67 were controls. The groups were comparable at baseline and 82% were on antidepressants. RESULTS: In total, the patients mentioned 14 separate improving factors, which could be organized to the larger themes external factors, self-management, passing spontaneously and professional help. The most frequently mentioned factors for improvement were the Contactus programme (53.0%), antidepressants (40.2%) and personal development (27.2%). Few gender and age differences were seen. The controls who mentioned professional help were more likely to have a better outcome. CONCLUSIONS: The patients were generally positive to professional help such as antidepressants and the Contactus programme. Patient education and group counselling seems to be a valuable supplement to treatment of depressed patients in primary care.

Quality of life after postconflict displacement in Ethiopia: comparing placement in a community setting with that in shelters.

BACKGROUND: The resilience of post-war displaced persons is not only influenced partly by the nature of premigration trauma, but also by postmigration psychosocial circumstances and living conditions. A lengthy civil war leading to Eritrea separating from Ethiopia and becoming an independent state in 1991 resulted in many displaced persons. METHOD: A random sample of 749 displaced women living in the shelters in the Ethiopian capital Addis Ababa was compared with a random sample of 110 displaced women living in the community setting of Debre Zeit, 50 km away from Addis Ababa, regarding their quality of life, mental distress, sociodemographics, living conditions, perceived social support, and coping strategies, 6 years after displacement. RESULTS: Subjects from Debre Zeit reported significantly higher quality of life and better living conditions. However, mental distress did not differ significantly between the groups. Also, Debre Zeit subjects contained a higher proportion born in Ethiopia, a higher proportion married, reported higher traumatic life events, employed more task-oriented coping, and perceived higher social support. Factors that accounted for the difference in quality of life between the shelters and Debre Zeit groups in three of the four quality of life domains of WHOQOL-BREF (physical health, psychological, environment), included protection from insects/rodents and other living conditions. However, to account for the difference in the fourth domain (social relationships), psychosocial factors also contributed significantly. CONCLUSION: Placement and rehabilitation in a community setting seems better than in the shelters. If this possibility is not available, measures to improve specific living conditions in the shelters are likely to lead to a considerable increase in quality of life.

Patients' beliefs about the cause of their depression.

BACKGROUND: Patients' beliefs about the cause of their depression can affect their help-seeking behavior, treatment preferences, coping strategies and treatment compliance. There are few studies exploring depressed patients' beliefs about the causes and to our knowledge none in a Swedish population. However, previous studies show that the patients more often mention environmental and psychological causes than biological. The aim of this study was to further explore depressed patients' answers to an open-ended question about the etiology of their depression. METHODS: Primary care patients, participating in a study evaluating patient education, were asked an open-ended question about their beliefs about what had caused their depression. Answers were obtained from 303 patients. RESULTS: The analysis of the patients' beliefs emerged into 16 different categories of explanations for depression that could be organized into three larger themes: current life stressors, past life events and constitutional factors. Work-related stress was the most commonly mentioned cause, followed by personality and current family situation. Only 3.6% stated biological reasons. LIMITATIONS: We could only count the frequency of mentioned causes, but no ranking of the importance of these causes. CONCLUSIONS: Primary care patients often gave multi-causal explanations to their depression. Biological explanations were rare. Their beliefs were predominantly current life stressors such as work or family situation and also their own personality. Patients' beliefs about their illness are important in the patient-doctor encounter, when developing new treatment strategies aiming at improved adherence to both psychopharmacological and psychotherapeutic treatments and also in patient education programs.

Novelty seeking among adult women is lower for the winter borns compared to the summer borns: replication in a large Finnish birth cohort.

OBJECTIVE: Earlier general population studies have shown that novelty seeking (NS) of the Temperament and Character Inventory (TCI) of personality is lower for persons born in winter compared to those born in summer, particularly for women. Here, we investigate if this result can be replicated in another population. METHOD: The Northern Finland 1966 Birth Cohort, comprising 4968 subjects (2725 women, 2243 men), was investigated with regard to the temperament dimensions of the TCI and the season of birth. RESULTS: Novelty seeking and reward dependence (RD) showed significant variations according to the month of birth. We found that women born during winter have significantly lower levels of NS compared to women born during summer, with a minimum for the birth month November and maximum for May. These results are similar to those found in a previous Swedish study. Furthermore, our study showed that men born during spring had significantly lower mean scores of RD compared to men born during autumn, with a minimum for birth month March. This was in contrast to the Swedish study, where the minimum of RD was obtained for the birth month December. CONCLUSION: Women born in winter have lower NS as adults compared to women born in summer. Because NS is modulated by dopamine, this study gives further support to the studies in the literature that show that dopamine turnover for those born in winter is higher than for those born in summer.

Comparison of two self-rating scales to detect depression: HADS and PHQ-9.

BACKGROUND: More than half of patients with depression go undetected. Self-rating scales can be useful in screening for depression, and measuring severity and treatment outcome. AIM: This study compares the Hospital Anxiety and Depression Scale (HADS) and the Patient Health Questionnaire (PHQ-9) with regard to their psychometric properties, and investigates their agreement at different cut-off scores. METHOD: Swedish primary care patients and psychiatric outpatients (n = 737) who reported symptoms of depression completed the self-rating scales. Data were collected from 2006 to 2007. Analyses with respect to internal consistency, factor analysis, and agreement (Cohen's kappa) at recommended cut-offs were performed. RESULTS: Both scales had high internal consistency (alpha = 0.9) and stable factor structures. Using severity cut-offs, the PHQ-9 (> or =5) diagnosed about 30% more patients than the HADS depression subscale (HADS-D; > or =8). They recognised the same prevalence of mild and moderate depression, but differed in relation to severe depression. When comparing recommended screening cut-offs, HADS-D > or =11 (33.5% of participants) and PHQ-9 > or =10 (65.9%) agreement was low (kappa = 0.35). Using the lower recommended cut-off in the HADS-D (> or =8), agreement with PHQ-9 > or =10 was moderate (kappa = 0.52). The highest agreement (kappa = 0.56) was found comparing HADS-D > or =8 with PHQ-9 > or =12. This also equalised the prevalence of depression found by the scales. CONCLUSION: The HADS and PHQ-9 are both quick and reliable. The HADS has the advantage of evaluating both depression and anxiety, and the PHQ-9 of being strictly based upon the Diagnostic and Statistical Manual of Mental Disorders. The agreement between the scales at the best suitable cut-off is moderate, although the identified prevalence was similar. This indicates that the scales do not fully identify the same cases. This difference needs to be further explored.

Patient education and group counselling to improve the treatment of depression in primary care: a randomized controlled trial.

BACKGROUND: The Contactus program for depressed patients in primary care, consists of six lectures about depression, each followed by a group discussion. The aim of this study was to investigate if Contactus can improve treatment outcome in comparison to a control group. METHODS: Forty-six primary care centres in Sweden, each randomly allocated either to the Contactus group or to the control group, included depressed patients, 205 in the Contactus group and 114 in the control group. Besides regular treatment of depression, the Contactus group participated in the educational program. At start and after 6 weeks, patients filled in a questionnaire and the self-reports: HADS (Hospital Anxiety and Depression Scale) and GAF-self (Global Assessment of Functioning). RESULTS: After 6 weeks, clinically depressed patients (HAD-depression score >10) had a mean improvement in HAD-D of 4.6 in Contactus vs. 3.0 in controls (p=0.02), and 72% vs. 47% considered themselves to feel better (p=0.01). Increase in GAF score was 11.8 vs. 5.8 (p=0.04), respectively. According to HADS, 55% in Contactus were responders vs. 29% among controls (p=0.006), and 42% vs. 21% (p=0.02) were in remission. LIMITATIONS: Only 40% of the patients in Contactus and 35% among controls were clinically depressed according to the HADS (>10 points) at inclusion. CONCLUSIONS: Patient education and group counselling contributes significantly to better improvement among depressed patients. Group treatment is inexpensive and could be implemented in the routine care of depressed patients in primary care.

Season of birth modulates mood seasonality in humans.

We investigate whether mood seasonality is modulated by season of birth. A sample of 1682 university students were administered the Seasonal Pattern Assessment Questionnaire. We found that subjects born during spring or summer months had significantly higher Global Seasonality scores than those born during autumn or winter months.

Effect of trauma on quality of life as mediated by mental distress and moderated by coping and social support among postconflict displaced Ethiopians.

OBJECTIVE: An understanding of how quality of life is affected by severe trauma and mental distress may facilitate better intervention strategies for postconflict internally displaced persons, by identifying mediators, moderators, and independent risk factors. We investigate the pathways involved in this process and also study the moderating roles of coping strategies and perceived social support. METHOD: A random sample of 1193 (62% women) internally displaced Ethiopian adults living in shelters in Addis Ababa were interviewed with instruments capturing the relevant concepts, including SCL-90-R and WHOQOL-BREF. Path analysis was employed to elaborate the mediating and moderating effects. Self-reported living conditions were also assessed. RESULTS: Mental distress increased and quality of life decreased with age. Mental distress mediated the effects of trauma in reducing the quality of life, and some trauma also reduced quality of life directly. These effects remained after adjusting for living conditions. Living conditions were related to quality of life also on their own. Coping strategies and perceived social support influenced mental distress and quality of life directly as well as indirectly by moderation, in part gender specific. CONCLUSIONS: Intervention strategies aimed at reducing mental distress, modifying coping strategies, and encouraging social support may turn out to be useful in increasing the overall quality of life in postconflict situations, and are worth considering as complements to strategies that improve the living conditions.

Gender differences in traumatic life events, coping strategies, perceived social support and sociodemographics among postconflict displaced persons in Ethiopia.

BACKGROUND: Towards the end of civil war in Ethiopia leading to Eritrea's independent government in 1991, a large number of persons were displaced from their homes in Eritrea, to reside in shelters in Addis Ababa. We evaluate trauma, coping, social support and sociodemographics among them particularly in relation to gender. METHODS: From each randomly selected household in these shelters, a subject was interviewed, yielding 1200 subjects in all. RESULTS: Men, compared to women, reported significantly higher physical abuse during childhood in the family, traumatic childhood life events, experience of most traumatic life events related to displacement, and perceived social support. Women reported higher emotion-oriented coping whereas men reported higher task-oriented coping. Traumatic events were associated with higher emotion-oriented coping in both genders, and with higher task-oriented coping in women. Perceived social support was correlated positively with task-oriented coping in both genders, but was not associated with traumatic life events. CONCLUSIONS: Severe trauma is associated with coping and perceived social support in part differently with regards to gender. Long-term help initiatives to alleviate the psychological wounds lasting for years should incorporate these gender-specific aspects.

Cerebrospinal fluid monoamine metabolite levels in human newborn infants born in winter differ from those born in summer.

An earlier study has shown significant differences in the CSF monoamine metabolite levels in adults born during different seasons of the year. We study here the relationship between season of birth and CSF monoamine metabolite levels in 283 newborn febrile infants without neurological abnormalities, with an age distribution ranging from birth to about 3 months, adjusting for the confounding variables age and time at lumbar puncture, weight at birth, estimated gestational age at birth, gender, race, and medicaid status. Each of the three metabolite levels as well as their ratios HVA/5-HIAA and 5-HIAA/MHPG showed significant month-of-birth variations, but not the ratio HVA/MHPG. For HVA and MHPG levels, the maximum was obtained around the winter birth months November-December, whereas for 5-HIAA level, the maximum was obtained around the summer birth months June-July. The correlations between HVA and 5-HIAA were, in general, significantly positive within the different birth seasons and races. Among summer-born Caucasian infants, MHPG was significantly positively correlated with HVA and with 5-HIAA, whereas among winter-born Black infants, MHPG was significantly positively correlated with HVA. Season of birth is an unspecific environmental factor that may be proxy for several possible seasonally varying environmental circumstances such as the length of photoperiod, temperature, infections, nutrition, stress and lifestyle. Studies relating season of birth to monoaminergic turnover at different stages of life may yield important clues about the gestational and perinatal origins of neurodevelopment.

Adolescent attachment styles and their relation to the temperament and character traits of personality in a general population.

Attachment styles as well as personality traits in adolescents and adults have been found to be associated with their health outcomes and with their personality pathology. In this cross-sectional exploratory study, we study the relationship between attachment styles that derive from our data employing the items of Feeney et al. (1994) self-report attachment style questionnaire (ASQ), and personality traits given by the junior version of Cloninger et al. (1993) self-report temperament and character inventory (TCI), in a sample of 426 adolescents (54% females) from a general population. The secure attachment style was correlated significantly negatively with the personality trait harm avoidance (HA), but significantly positively with the personality traits novelty seeking (NS), reward dependence (RD), cooperativeness (CO) and self-transcendence (ST). The preoccupied (anxious/ambivalent) attachment style was correlated significantly positively with HA and NS, but significantly negatively with self-directedness (SD). The fearful-avoidant category was correlated significantly negatively with NS. Our five-factor solution of the attachment styles and their relation to the TCI point towards a need for a modification of the two-axis, four-category attachment model of Bartholomew (1990) and Bartholomew and Horowitz (1991), with their category dismissing-avoidant replaced by the two categories defined here as dismissing relations (correlated significantly negatively with CO) and dismissing others (correlated significantly negatively with RD and significantly positively with SD).

Interaction between the tryptophan hydroxylase gene and the serotonin transporter gene in schizophrenia but not in bipolar or unipolar affective disorders.

Increasing focus is being given to identify possible combinations of genes related to specific clinical phenotypes. In our sample of 814 patients comprising 114 with schizophrenia, 416 with bipolar affective disorder and 284 with unipolar affective disorder, we studied interactions between the tryptophan hydroxylase (TPH), the serotonin transporter (5-HTTLPR), and the dopamine receptor (DRD4) genes in relation to five major psychiatric symptomatology scores. There was significant interaction between the TPH and the 5-HTTLPR genes. With an increasing number of short (s) alleles of 5-HTTLPR, the scores for delusions, disorganization and negative symptoms were significantly decreasing among subjects having the TPH genotype AA but increasing among subjects having the TPH genotype AC, yielding the highest scores for the combinations AA x ll and AC x ss. Since high scores on just delusions, disorganization and negative symptoms but low scores on excitement and depression were found among subjects with schizophrenia, we conducted comparisons among the three diagnostic categories and controls as regards the combined TPH x 5-HTTLPR genotype distribution. Schizophrenia subjects had a significantly different distribution of the genotype combination for TPH x 5-HTTLPR as compared to 241 controls or to unipolar or bipolar subjects, and had significantly higher frequencies of AA x ll and of AC x ss. Thus, an interaction between TPH and 5-HTTLPR genes constitutes susceptibility to schizophrenia, thereby yielding apparent relationships between the major psychiatric symptomatology scores and genotype combinations in samples that are obtained by pooling schizophrenia with other diagnostic categories.

Suicide aggregation in relation to socio-demographic variables and the suicide method in a general population: assortative susceptibility.

One area of research in suicidology aims at understanding the processes underlying aggregation or clustering of suicide cases within a limited period of time or space (suicide epidemics). Susceptibility to, or propagation of, suicidal behavior due to given risk factors may be operating through media other than space, and its susceptibility for the receiver may be different within different types of strata that are determined by socio-demographic, personality-related or biological-susceptibility differences. We use the term "assortative susceptibility" for this phenomenon. Aggregated cases, comprising calendar months with an unusually large number of suicides after adjusting for seasonal and yearly variations, were defined in the register of all 1093 completed suicides during 1969-93 in the county of Västerbotten in northern Sweden. Binary multiple logistic regressions were performed to compare the aggregated cases with the remaining cases. Compared with the remaining cases, the aggregated cases included significantly more of males and of those living in the rural forested regions. Also, suicide by firearms was significantly more aggregated than the other methods. Our results suggest that middle-aged or older men from the rural areas, who have access to firearms, are likely to belong to the socio-demographic stratum that is susceptible to the processes that give rise to aggregations or clusters of suicides in this county (assortative susceptibility).

A dual vulnerability hypothesis for seasonal depression is supported by the seasonal pattern assessment questionnaire in relation to the temperament and character inventory of personality in a general population.

BACKGROUND: Personality structure obtained from the psychobiological Temperament and Character Inventory (TCI) was studied in relation to self-reported seasonal variations in mood and behavior measured by the Seasonal Pattern Assessment Questionnaire (SPAQ). METHODS: The subjects comprised 1761 adults (57.6% women) in the age range 35-85 years, enrolled in the Betula prospective random cohort study of Umea, Sweden. RESULTS: Personality profiles of subjects who reported the occurrence of a high degree of seasonal variation as such were associated with a combination of high self-transcendence (ST) and high persistence (PS), irrespective of the level of harm avoidance (HA). Subjects who reported feeling worst in winter were associated with high HA, irrespective of the levels of ST and PS. Also, subjects feeling worst in summer or experiencing overall problems with seasonal variation were associated with high HA in their personality profiles. Using the SPAQ criteria to define seasonal affective disorder (SAD) or subsyndromal SAD (S-SAD), subjects with these disorders often had combinations of high self-transcendence (ST) and high persistence (PS), but with different associations with HA. LIMITATIONS: No evaluations were made for SAD or subsyndromal SAD according to the DSM-IV or ICD 10 criteria. CONCLUSIONS: Our results relating SPAQ with TCI give support for a dual vulnerability hypothesis for seasonal depression proposed in the literature, where it is attributed to a combination of a seasonal factor and a depression factor. Examining the literature regarding the relationships between the different TCI scales and monoamine neurotransmitter functions, those relationships suggest that these two vulnerability factors for seasonal depression may be modulated by different neurotransmitter systems.

An epidemiological study on gender differences in self-reported seasonal changes in mood and behaviour in a general population of northern Sweden.

Gender differences have been reported regarding symptoms, prevalence and heritability of seasonal affective disorders (SAD). We focus on gender aspects in this study of self-reported seasonal changes in mood and behaviour in a general population. The Seasonal Pattern Assessment Questionnaire (SPAQ) was completed by 2620 adults (55.6% women) aged 35-85 years, enrolled in the Betula prospective random cohort study of Umeå, Sweden. October to February turned out to be suitable winter months. SAD was found in 2.2% and sub-syndromal SAD (S-SAD) in 5.7%. Women had about 1.5 times higher prevalences than men, and seasonality problems decreased with age in both genders. Preference for eating least was distributed with a peak in summer, whereas preference for eating most had a major peak in winter (winter eaters) and a minor peak in summer (summer eaters). Significantly more of winter eaters in women, and significantly more of summer eaters in men, felt worst in winter. Seasonal change in weight was considered significantly as a problem by women but not by men. Winter behaviour of sleeping most was considered significantly as a problem by men but not by women. Women reacted significantly to temperature-related changes (negatively to cold/short days and positively to hot/long days), whereas men reacted significantly to sunshine-related changes (negatively to cloudy days and positively to sunny days). Subtle gender differences may thus underlie the pathophysiology of seasonal problems. Studies of an eventual efficacy of treating SAD women with raised ambient temperature, and gender-specific comparisons with other therapies, would be of interest.

Gene-environment interaction in psychiatric disorders as indicated by season of birth variations in tryptophan hydroxylase (TPH), serotonin transporter (5-HTTLPR) and dopamine receptor (DRD4) gene polymorphisms.

Genetic and environmental factors, as well as their interactions, are likely to be involved in psychiatric disorders. Considerable progress has been made in association and linkage studies with various candidate genes, at times with conflicting or ambiguous results. An environmental factor that has persistently shown associations with several psychiatric and neurological disorders is the season of birth. If it is the interaction of a specific gene allele with a specific season of birth that constitutes an increased (or decreased) risk for a disorder, then the individuals with this disorder are likely to have a season of birth variation in this gene allele. We investigated the variations in TPH, 5-HTTLPR and DRD4 gene polymorphisms according to seasonality of birth in 954 patients with unipolar affective disorder, bipolar affective disorder, and schizophrenia, respectively, and in 395 controls. We first analyzed season of birth variations in the gene alleles with one cycle or two cycles per year, and then compared specified birth seasons with each other. We found season of birth variations in these gene alleles that were different for different psychiatric disorders. Significant differences between cases and controls could be obtained when restricting the analysis within certain birth seasons but not within others. Our results thus suggest an interaction between the seasons of birth and the expression of the candidate genes, and that season of birth is a confounding variable when investigating the role of the candidate genes in susceptibility to psychiatric disorders.

Converging evidence suggests that monoamine neurotransmitter turnover in human adults is associated with their season of birth.

Separate studies on adults, including those in suicidology and another regarding personality in the general population, have indicated associations with their season of birth. We analyse each of these studies by multiple nonlinear regression employing a cosine function for the month of birth, and compare these studies regarding the birth months giving the maxima and minima. The method of suicide in suicide studies shows a significant month-of-birth variation similar to that for the serotonin metabolite 5-HIAA in the separate study on cerebrospinal fluid, with a peak around the birth month September and a nadir around birth in March. When comparing the personality study with the study on cerebrospinal fluid, the trait novelty seeking varies similar to that for the dopamine metabolite HVA or the norepinephrine metabolite MHPG, and the trait reward dependence varies similar to that for HVA. The trait self-transcendence varies similar to the ratio of the dopamine and serotonin metabolites. Dopamine turnover in adults thus shows a peak around the birth months November-December, and a nadir around the birth months May-June, suggesting a possible involvement of the length of photoperiod during their perinatal period. These results provide strong evidence for the influence of season of birth on adult monoamine neurotransmitter turnover, and give further support for the monoaminergic modulation of the temperament and character traits.

The Temperament Scale of Novelty Seeking in adolescents shows an association with season of birth opposite to that in adults.

We investigated the relationship between season of birth and the Junior Temperament and Character Inventory of Personality (Junior TCI, JTCI) in adolescents. The Temperament Scale of Novelty Seeking (NS) is significantly higher for females born during October-January as compared to females born otherwise. This association is opposite to that obtained earlier for adults. For both genders pooled, NS is significantly higher for those born during October-March compared to April-September. This association is also found when examining the data for those of age up to 18 years in a third independent study on the age range 11-81 years with the adult TCI. There is a greater tendency for exploration and risk-taking behavior as the child individuates from the family. Our study suggests that the effects of such environmental and developmental changes on personality are different in those born during October-March as compared to those born during April-September. The former show a higher rise in NS during adolescence and a steeper fall in NS during the years of adulthood, compared to the latter. Dopamine turnover is likely associated with NS, and the mutually inhibitory systems of dopamine and melatonin are the paracrine signals of day and night, respectively. Thus, the maternal entrainment of these systems during the prenatal period, or the postnatal environmental influence on these systems, may be different for those born during the short photoperiod of October-March as compared to those born during the long photoperiod part of the year.

Season of birth variations in suicide methods in relation to any history of psychiatric contacts support an independent suicidality trait.

BACKGROUND: Due to reports on season of birth variations in suicidal behaviour as well as in cerebrospinal fluid levels of monoamine metabolites, we investigated season of birth variations in suicide methods for completed suicides in relation to any history of psychiatric contacts. Relationships with the psychiatric diagnoses for those with psychiatric contacts were also studied. METHODS: Sociodemographic variables and suicide methods were examined for all the 693 suicide victims during 1961-1980 in Västerbotten, Sweden. Information on any history of psychiatric contacts was obtained from psychiatric in-patient and out-patient records. RESULTS: Gender differences in the choice of suicide method were found in the group without any history of psychiatric contacts, but not in those with such a history. Only those without a history of psychiatric contacts showed season of birth variations for suicide methods -- those born during February to April were significantly more likely, and those born during October to January significantly less likely, to have preferred hanging rather than poisoning or petrol gases. These associations were stronger for the determined suicides, for males, and for urban residence. Suicide victims with a history of psychiatric contacts were significantly younger than those without. LIMITATIONS: No psychological autopsies for those without psychiatric contacts. No information on eventual contacts with general practitioners. No measures of monoamine neurotransmitters were available. CONCLUSIONS: Season of birth association for suicide methods is likely to be mediated by a suicidality trait independently of specific major psychiatric disorders. Monoamine neurotransmitters, particularly serotonin, are likely to underlie such a trait.