1
|
What lies behind suicide ideation during medical residency? A comparison between medical specialties in Mexican physicians in training. Gen Hosp Psychiatry 2024; 88:79-80. [PMID: 38360430 DOI: 10.1016/j.genhosppsych.2024.02.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Revised: 02/08/2024] [Accepted: 02/08/2024] [Indexed: 02/17/2024]
|
2
|
To the bone: Prevalence and correlates of depression and anxiety among orthopedic residents in Mexico. Int J Psychiatry Med 2023:912174231199216. [PMID: 37653426 DOI: 10.1177/00912174231199216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
Abstract
OBJECTIVE The present study examined among orthopedic residents the relationship between the presence of depressive or anxious symptoms and the degree of perfectionism, perceived work-related distress, and involvement in the care of patient(s) who died. METHOD A cross-sectional online survey based on self-reported measures was used to collect the data from October 2019 to April 2021. RESULTS The sample consisted of 642 orthopedic residents (50.6% response rate; 70.9% male; average age 29.8 years old). A total of 12.5 and 18.4% reported depressive or anxious symptoms, respectively. On a scale of 0-100, the mean score of perceived work-related distress was 51.9. A third (33.6%) reported being involved in the care of patient(s) who had died. Higher levels of perceived work-related distress and higher scores on the indecision of action/perfectionism dimension were associated with depressive and anxious symptoms. Being involved in the care of patient(s) who had died was associated with having anxious symptoms (OR = 1.79; 95%CI = 1.18-2.72). CONCLUSIONS These results highlight the need for the systematic monitoring of the mental health status of orthopedic residents in Mexico, particularly those who report a high level of work-related distress or perfectionism or who have recently experienced the death of a patient.
Collapse
|
3
|
Gender Differences in Professional Adversities and Mental Health Among Surgical and Nonsurgical Medical Trainees: An Internet-Based Survey. JOURNAL OF SURGICAL EDUCATION 2023; 80:666-675. [PMID: 36801202 DOI: 10.1016/j.jsurg.2023.01.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 01/05/2023] [Accepted: 01/27/2023] [Indexed: 06/18/2023]
Abstract
BACKGROUND Physicians in training face a variety of stressors throughout their professional development and according to their gender. Among them, surgical trainees appear to be especially at risk for mental health problems. OBJECTIVE The aim of the present study was to compare demographic features, professional activities and adversities, depression, anxiety, and distress among men and women trainees of surgical and nonsurgical medical specialties. DESIGN AND PARTICIPANTS A cross-sectional, retrospective, comparative study was conducted on a total of 12,424 trainees (68.7% nonsurgical and 31.3% surgical) from Mexico through an online survey. Demographic features, variables related to professional activities and adversities, depression, anxiety, and distress were evaluated through self-administered measures. Comparative analyses using the Cochran-Mantel-Haenszel test for categorical variables and multivariate analysis of variance including medical residency program and gender as fixed factors to test their interaction effect for continuous variables were used. RESULTS An important interaction between medical specialty and gender was found. Women trainees from surgical specialties report more frequent psychological and physical aggressions. Women from both specialties had higher distress, significant anxiety, and depression than men. Men from surgical specialties worked more hours per day. CONCLUSIONS Gender differences are evident in trainees for medical specialties, with a larger impact in surgical fields. Mistreatment of students is a pervasive behavior that affects society as a whole, and actions to improve learning and working environments in all medical specialties, but mostly in surgical fields, are urgently needed.
Collapse
|
4
|
The effect of continuation and maintenance electroconvulsive therapy on cognition: A systematic review of the literature and meta-analysis. J Affect Disord 2022; 316:148-160. [PMID: 35952935 DOI: 10.1016/j.jad.2022.08.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Revised: 07/18/2022] [Accepted: 08/01/2022] [Indexed: 10/31/2022]
Abstract
BACKGROUND Electroconvulsive therapy (ECT) is an effective treatment for depression, mania, and refractory schizophrenia. Its tolerability profile is established for acute treatment, but less is known regarding the effects of longer treatment courses, particularly on cognitive performance. OBJECTIVES To assess the effect of the long-term ECT on cognition. METHODS We searched CINAHL, EMBASE, PsychInfo and Pubmed, for the period between January 1, 2010, and June 30, 2022, in English or French, for randomized controlled trials, prospective or retrospective studies of ECT continued for at least 2 months for the treatment of mood or schizophrenic disorders and which measured cognition before and at the end of treatment. Non-peer reviewed records were excluded. The Cochrane Risk of Bias tool was used to assess study quality. Classical meta-analyses, with heterogeneity statistics (tau2, I2) were complemented with three level-meta-analysis and Bayesian Meta-analyses. RESULTS Nine studies were included in the narrative and quantitative review. Controlled comparison at 6 months (k = 6, n = 334) and at 12 months (k = 3, n = 56), within-subject comparisons at 6 (k = 6, n = 218) and 12 months (k = 4, n = 147) showed no detrimental effect of maintenance or continuation ECT on cognition, with little to no heterogeneity. Bayesian analysis further confirmed that data better supported the no effects hypothesis. LIMITATIONS Insufficient data resulted in imprecision in estimates. CONCLUSIONS Continuation and maintenance ECT do not appear detrimental for cognitive performance. However, the low number of studies limit the interpretation of the results.
Collapse
|
5
|
An Indicator of environmental enrichment to measure physical, social and cognitive activities in human daily life. BMC Psychiatry 2022; 22:295. [PMID: 35468768 PMCID: PMC9040238 DOI: 10.1186/s12888-022-03952-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Accepted: 04/18/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The concept of environmental enrichment (EE) encompasses complex physical, social, cognitive, motor, and somatosensory stimuli to which individuals are differentially exposed. An indicator of EE comprising these elements would facilitate the study of the impact of EE in diverse clinical settings by allowing an easy and comparable measurement. This study aimed to create and test such an EE indicator based on the Florida Cognitive Activities Scale (FCAS), the Multidimensional Social Integration in Later Life Scale (SILLS), and the International Physical Activity Questionnaire (IPAQ). METHODS Participants with major depression and control subjects were recruited in this cross-sectional comparative study. Depressive symptom severity was assessed with the Hamilton Depression Rating Scale (HAM-D). The EE indicator was used to evaluate cognitive, social, and physical activity. We divided the sample into three levels of cognitive and social activities to construct an EE indicator and compared the obtained scores between participants with major depression and control subjects. RESULTS 40 patients suffering from major depression and 50 control subjects were included. Higher HAM-D scores were associated with lower EE levels. Cognitive and social items exhibited adequate reliability. Control subjects reported higher scores in all three activities evaluated, except for some items of physical activities. This indicator of EE clearly differentiated between participants with major depression from control subjects. CONCLUSIONS FCAS, SILLS, and IPAQ used together are valid to evaluate EE. This EE indicator may be a useful tool during clinical practice. The cross-sectional design and the small sample size are limitations of the present study.
Collapse
|
6
|
Looking for factors affecting functioning in euthymic patients with bipolar I disorder: the importance of cognitive complaints and BDNF's Val66Met polymorphism. J Affect Disord 2022; 302:131-138. [PMID: 34990638 DOI: 10.1016/j.jad.2022.01.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Revised: 11/14/2021] [Accepted: 01/01/2022] [Indexed: 10/19/2022]
Abstract
INTRODUCTION Functioning in Bipolar Disorder (BD) is affected in a substantial proportion of patients. The impact of demographic, clinical, cognitive, and genetic factors on functioning has been shown individually; however, as a complex phenomenon, a global approach to identify the most relevant as well as possible interactions is needed. METHODS 102 patients with type I BD in euthymia were invited for evaluation of demographic, clinical, and cognitive characteristics as well as genotype for Val66Met polymorphism of BDNF gene to determine those associated with poor functioning according to the FAST scale cut-off score. Clinical evaluation included assessment of residual affective symptoms and anxiety. Cognitive evaluation included the COBRA scale, verbal memory, and executive functions testing. RESULTS Residual depressive symptoms, anxiety, cognitive complaints and being a Met carrier were more frequent in the poor functioning group and were entered in a logistic regression model. Being a Met carrier (OR=4.46, CI=1.19-16.67) and cognitive complaints (OR=1.29, CI= 1.13-1.46) were the most important predictors of poor functioning in type I BD. LIMITATIONS Cross-sectional study, with select population limiting generalizability of findings. CONCLUSIONS A better understanding of underlying factors affecting cognition, including the possible involvement of BDNF Val66Met polymorphism, its systematic evaluation and a continued search for targeted treatment, along with recognition and attention of residual affective and anxious symptoms might improve psychosocial outcomes such as functioning in this population.
Collapse
|
7
|
Suicidal ideation in psychiatry trainees. The impact of self-perceived mental health and perfectionism. Asian J Psychiatr 2022; 68:102938. [PMID: 34883317 DOI: 10.1016/j.ajp.2021.102938] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Revised: 10/21/2021] [Accepted: 11/18/2021] [Indexed: 11/02/2022]
|
8
|
A better way of life: The role of leisure activities on self-perceived health, perceived stress, confidence in stress management, and satisfaction with social support in psychiatrists and psychiatry trainees in Mexico. Front Psychiatry 2022; 13:1052275. [PMID: 36569620 PMCID: PMC9774476 DOI: 10.3389/fpsyt.2022.1052275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Accepted: 11/18/2022] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Psychiatrists are at high risk of developing burnout and mental health problems mainly due to their emotionally demanding jobs, difficult working conditions, long working hours, and poor work-life balance. As leisure activities are associated with better physical and mental health, engaging in these activities has been recommended as a measure to improve the wellbeing of healthcare workers. However, it is unclear the extent of which psychiatrists and trainees are involved in leisure activities, what type of activities they prefer, or how these impact their self-perceived health, stress, confidence in stress management, and satisfaction with their social support. OBJECTIVE The aim of this study was to identify differences in self-perceived health, perceived stress, confidence in stress management, and satisfaction with social support, between psychiatrists and trainees who engage in different leisure activities, compared with those who do not. METHODS This was a cross-sectional study, including Mexican psychiatrists (n = 355) and trainees (n = 330) who agreed to participate through an online survey. RESULTS 73.1% of participants engaged in some leisure activity, being solitary-passive activities the most reported. Those who have a leisure activity reported lower stress, greater confidence in stress management, and more satisfaction with their social support. Passive-solitary activities were associated with less perceived stress and better confidence in stress management, while active-solitary and social activities were associated with better satisfaction with social support. CONCLUSION Psychiatrists' and trainees' wellbeing benefits from engagement in leisure activities, which should be part of their daily schedules to reduce stress, and potentially improve their mental health.
Collapse
|
9
|
Identifying Risk Factors for Self-reported Mental Health Problems in Psychiatry Trainees and Psychiatrists in Mexico. ACADEMIC PSYCHIATRY : THE JOURNAL OF THE AMERICAN ASSOCIATION OF DIRECTORS OF PSYCHIATRIC RESIDENCY TRAINING AND THE ASSOCIATION FOR ACADEMIC PSYCHIATRY 2021; 45:698-707. [PMID: 34291434 PMCID: PMC8294267 DOI: 10.1007/s40596-021-01506-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Accepted: 06/28/2021] [Indexed: 06/13/2023]
Abstract
OBJECTIVE The objective was to determine and compare demographic features, professional activities and adversities, physical health conditions, and self-care behaviors related to the most frequently self-reported mental health problems among psychiatrists and psychiatry trainees. METHODS A cross-sectional, retrospective, comparative study was conducted on a total of 330 (48.2%) psychiatry trainees and 355 (51.8%) psychiatrists from Mexico through an online survey. Demographic features, professional activities and adversities, physical and mental health problems, self-care behaviors, and social support were examined. Comparative analyses and multiple logistic regression models were performed. RESULTS Major depression, anxiety, and burnout were the most common mental health problems reported with a higher frequency of anxiety disorders in psychiatry trainees. Being a woman, having a physical health problem, and lack of restful sleep were the main risk factors in both groups. Consultation in the government sector and having patients with severe suicidal ideation affected more psychiatry trainees. Perceived discrimination and inadequate eating schedules were risk factors for mental health problems for psychiatrists. CONCLUSION Psychiatry trainees constitute a vulnerable group for anxiety disorders. Particular attention should be paid to how students cope with the training experience to determine whether additional support is required. These professionals face major stressors leading to a high prevalence of depression, burnout, and anxiety. Encouraging psychiatrists to have better health habits is a step in the right direction, which must be accompanied by tangible organizational avenues to do so and creating a culture that truly promotes self-care.
Collapse
|
10
|
Ten-year course of treated bipolar I disorder: The role of polarity at onset. Brain Behav 2021; 11:e2279. [PMID: 34626089 PMCID: PMC8613434 DOI: 10.1002/brb3.2279] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Revised: 05/15/2021] [Accepted: 06/27/2021] [Indexed: 01/12/2023] Open
Abstract
INTRODUCTION Early-stage predictors of illness course are needed in bipolar disorder (BD). Differences among patients with a first depressive versus maniac/hypomanic episode have been stated, although in most studies, memory bias and time from onset to start of specialized treatment might interfere. The aim was to compare the first 10 years of illness course according to polarity at onset. METHODS 49 type I BD patients admitted for treatment for a first-time affective episode and a following 10-year attendance to the institution were included. A retrospective year by year comparison according to polarity at onset (depressive (DPO) or maniac (MPO)) was performed. Cramer's V and Cohen d were computed to determine effect size. RESULTS 59.2% (n = 29) started with MPO. Both groups were similar in demographic and social outcome characteristics, clinical features, and treatment variables. Patients with DPO reported more depressive episodes than MPO patients (U = 149.0 p < .001, Cohen's d = 0.87); both groups had a similar number of manic episodes. Only during the first year of follow-up, suicide attempts (SA) were more frequent in patients with DPO while the presence of a psychotic episode and psychiatric hospitalizations were more frequent in the MPO group. CONCLUSION According to these findings, it can be concluded that illness onset is only indicative of depressive predominant polarity but is not related to other poor prognostic variables after the first year of illness onset, in treated BD. SA in the first year of an affective disorder could represent a marker of BD.
Collapse
|
11
|
Abstract
BACKGROUND Much remains unknown about the transmission of the SARS-CoV-2 virus. Pregnant women are considered part of the risk population, and vertical transmission of other coronaviruses has been suggested; however, this type of transmission in SARS-CoV-2 is believed to be unlikely. CASE REPORT A newborn delivered in term via cesarean section to an asymptomatic but COVID-19-positive 35-year-old woman started with respiratory distress in the first 30 min of life. A chest radiograph revealed pneumothorax and ground glass opacities. Ventilatory support with continuous positive airway pressure was needed. Given the respiratory failure and the positive test from the mother, the patient was sampled for SARS-CoV-2 (RT-PCR) at minute 30 of life, with a positive result reported at 36 h of life. No complications had been present during pregnancy, and cardiac screening and blood cultures revealed no other etiologies. CONCLUSION Vertical transmission was highly likely in this case. Clinicians should be alert and report similar cases.
Collapse
|
12
|
Professional Adversities and Protective Factors Associated with Suicidal Ideation in Mexican Psychiatrists. Arch Med Res 2020; 50:484-489. [PMID: 32018070 DOI: 10.1016/j.arcmed.2019.11.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Revised: 11/13/2019] [Accepted: 11/20/2019] [Indexed: 10/25/2022]
Abstract
BACKGROUND Psychiatrists may be at an increased risk of suicide, since they encounter stressful factors in their everyday activities in addition to the sociodemographic factors for suicidal ideation reported for Mexican population. AIM OF THE STUDY To determine whether experiences inherent to the profession were related to the self-report of suicidal ideation among Mexican psychiatrists or could be attributed to factors previously reported in the general population (age, marital status, presence of a mental disorder and not having received specialized treatment). METHODS This was a cross-sectional retrospective study with 288 psychiatrists from Mexico who participated through an online survey where current working activities, self-reported mental health conditions (major depression, anxiety, burnout and suicidal ideation) and professional adversities (assaults, lawsuits, patients with suicidal ideation or who had committed suicide, perceived discrimination and social support) throughout the professional lifespan were evaluated. RESULTS Twenty-two psychiatrists (7.6%) reported having had suicidal ideation at some point in their training in psychiatry or their professional lives as psychiatrists. Depression and burnout were the most important predictors for suicidal ideation while greater satisfaction with social support was the most important protector, followed by being married/living together and having other physicians in the family. CONCLUSIONS Psychiatrist represent a risk population for suicidal ideation. As such, detection and attention are essential. Psychiatrists need to be encouraged to pursue healthy, lasting interpersonal relationships and seek professional help when required.
Collapse
|
13
|
Subsyndromal anxiety: Does it affect the quality of life? A study on euthymic patients with bipolar disorder. EUROPEAN JOURNAL OF PSYCHIATRY 2019. [DOI: 10.1016/j.ejpsy.2019.06.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
|
14
|
Abstract
BACKGROUND Occupational functioning is severely impaired in patients with bipolar disorder (BD). Work motivation (WM), defined as the psychological processes that determine the direction, intensity, and persistence of action within the work, is an essential component of work-related functioning. AIM To assess whether WM is affected in patients with BD and which clinical and sociodemographic factors are related to low WM. METHODS In all, 95 euthymic BD patients were invited to answer the Motivation for Work Questionnaire and the Rating Scale on Subjective Cognitive Deficits in Bipolar Disorder (COBRA). RESULTS A total of 49.5% ( n = 47) of the patients were classified in the Low Motivated (LM) group. Unemployment and the report of more subjective cognitive complaints were predictors of poor WM in this sample ((OR) = 3.01 and 7.10, respectively). CONCLUSIONS Perceived cognitive deficits related to the disorder and current unemployment negatively impact WM in patients with BD. In addition to symptomatic recovery, the need of the inclusion of personal and occupational areas in the comprehensive treatment of patients with BD is necessary.
Collapse
|
15
|
Psychometric properties and cross-cultural comparison of the cognitive complaints in bipolar disorder rating assessment (COBRA) in Mexican patients with bipolar disorder. Psychiatry Res 2018; 269:536-541. [PMID: 30199694 DOI: 10.1016/j.psychres.2018.08.098] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/24/2018] [Revised: 08/18/2018] [Accepted: 08/24/2018] [Indexed: 01/03/2023]
Abstract
Bipolar Disorder (BD) is a serious and frequent mental health condition that is sometimes fatal. Several longitudinal studies have found an important correlation between cognition and functionality in BD. Despite the known importance of cognitive symptoms in BD, evaluation of cognitive deficits is not routinely done in clinical settings, as assessment is time-consuming and requires neuropsychological testing. The aim was to evaluate the psychometric properties of the subjective cognitive deficits in bipolar disorder (COBRA) rating scale in a Mexican sample of patients with BD and perform a cross-cultural comparison with the results obtained in other cultures. Ninety-two Healthy Subjects and 80 euthymic patients with BD were asked to complete the COBRA rating scale. The psychometric properties found in Mexican population show a good internal consistency and good discriminant validity with control subjects. Adequate congruence coefficients were obtained between the COBRA analyses in Mexican population and Spanish population and acceptable when compared to Japanese population. The COBRA scale is a brief and valid measure of cognitive complaints in BD for use in Mexican population.
Collapse
|
16
|
Combining Adobe Forms and Dropbox to Obtain a Low-Cost Electronic Data Collection System. Telemed J E Health 2018; 25:250-256. [PMID: 29932811 DOI: 10.1089/tmj.2018.0029] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND The method used to collect, store, and analyze data can affect the quality of data obtained. Many studies have shown the advantages of electronic systems over paper. Numerous tools are available for this purpose; however, they tend to be implemented only in high-budget protocols as they tend to be expensive. INTRODUCTION We report the experience of the Affective Disorders' Clinic of the National Institute of Psychiatry in Mexico City using Adobe Acrobat® Forms combined with Dropbox® as storage and distribution method for clinical protocols. MATERIALS AND METHODS Adobe Acrobat 9 Pro® was used to create personalized forms to capture data for seven different clinical purposes. Dropbox was used to share the distributed forms with fellow researchers. Completed forms were stored in Dropbox and the main researcher kept the data collection file, from where the forms were gathered for analysis. RESULTS Sixteen forms created for different clinical purposes had an average of 1.2% missing fields. DISCUSSION The main drawbacks relate to remote filling and the time spent in fine-tuning complex forms. The main advantages relate to the simplicity of the implementation of the method and the fact that no software other than the one available at the Institute is required. CONCLUSIONS Compared with other types of electronic data collection systems, the combination of these tools achieves similar goals and is low cost, requiring minimal knowledge of informatics.
Collapse
|
17
|
Solar insolation in springtime influences age of onset of bipolar I disorder. Acta Psychiatr Scand 2017; 136:571-582. [PMID: 28722128 DOI: 10.1111/acps.12772] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 06/16/2017] [Indexed: 01/19/2023]
Abstract
OBJECTIVE To confirm prior findings that the larger the maximum monthly increase in solar insolation in springtime, the younger the age of onset of bipolar disorder. METHOD Data were collected from 5536 patients at 50 sites in 32 countries on six continents. Onset occurred at 456 locations in 57 countries. Variables included solar insolation, birth-cohort, family history, polarity of first episode and country physician density. RESULTS There was a significant, inverse association between the maximum monthly increase in solar insolation at the onset location, and the age of onset. This effect was reduced in those without a family history of mood disorders and with a first episode of mania rather than depression. The maximum monthly increase occurred in springtime. The youngest birth-cohort had the youngest age of onset. All prior relationships were confirmed using both the entire sample, and only the youngest birth-cohort (all estimated coefficients P < 0.001). CONCLUSION A large increase in springtime solar insolation may impact the onset of bipolar disorder, especially with a family history of mood disorders. Recent societal changes that affect light exposure (LED lighting, mobile devices backlit with LEDs) may influence adaptability to a springtime circadian challenge.
Collapse
|