No evidence of seasonal variation in mild forms of depression
| Autor: | Sheila Mehta, Steven G. LoBello |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Adult
Male 050103 clinical psychology Population Experimental and Cognitive Psychology Patient Health Questionnaire Severity of Illness Index DSM-5 03 medical and health sciences Young Adult 0302 clinical medicine Arts and Humanities (miscellaneous) medicine Prevalence Humans 0501 psychology and cognitive sciences Daylight Proxy (statistics) Major depressive episode education Depression (differential diagnoses) education.field_of_study Depressive Disorder Depression 05 social sciences Seasonal Affective Disorder Regression analysis Middle Aged United States 030227 psychiatry Diagnostic and Statistical Manual of Mental Disorders Psychiatry and Mental health Clinical Psychology Mild depression Cross-Sectional Studies Female Seasons medicine.symptom Psychology Clinical psychology |
| Zdroj: | Journal of behavior therapy and experimental psychiatry. 62 |
| ISSN: | 1873-7943 |
| Popis: | Background and objectives Seasonal Affective Disorder (SAD) is ubiquitous in popular culture and has influenced psychiatric diagnosis with the inclusion of the seasonal pattern modifier for the Major Depressive Episode in DSM. However, recent research has not supported the association of Major Depressive Episode with seasonal changes. The present study was conducted to determine if a seasonally-related pattern of occurrence of mild variants of depression could be demonstrated in a population-based study. Methods This is a cross-sectional U.S. survey of adults who completed the PHQ-8 Depression Scale with mild depression defined using a PHQ-8 cut score and a second model based on the DSM-5 diagnosis, Depression with insufficient symptoms. Regression models were used to determine if either variant of mild depression was related to season, latitude, or measures of daylight hours. Results Neither measure of mild depression was related to daylight hours or its proxy measures. Limitations Screening instruments for depression, even if consistent with DSM-5 diagnostic criteria, do not allow a formal diagnosis of depression or the exclusion of similar-appearing disorders. Current depression symptoms but not duration of depressive episode is measured. Conclusions Mild depression is not related to seasonal changes or proxy measures of light exposure. The findings cast doubt on light deficiency as a causal factor of depressive disorders, which underpins the inclusion of the seasonal pattern modifier in DSM-5 and light supplementation as a treatment modality. |
| Databáze: | OpenAIRE |
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