Evaluation of seasonality in six clinical populations and two normal populations
The Seasonal Pattern Assessment Questionnaire (SPAQ) was used to evaluate retrospectively self-reported seasonal changes in mood and behavior (seasonality) of two normal and six clinical populations: patients with winter-seasonal affective disorder (SAD), summer-SAD, eating disorders, bipolar affective disorder, major depressive disorder and subsyndromal winter-SAD. The SPAQ successfully discriminated between groups expected to have high seasonality scores, such as winter-SAD, summer-SAD and subsyndromal winter-SAD, and normal controls. Bipolars and major depressives had normal seasonality scores. Patients with eating disorders had unexpectedly high scores. There was a general tendency for all groups to eat and sleep more and to gain weight in the winter. The implications of these findings are discussed.
Epidemiological findings of seasonal changes in mood and behavior. A telephone survey of Montgomery County, Maryland.
A comparison of normal, bipolar and seasonal affective disorder subjects using the Seasonal Pattern Assessment Questionnaire.
On the question of mechanism in phototherapy for seasonal affective disorder: considerations of clinical efficacy and epidemiology.
Seasonal affective disorder. A description of the syndrome and preliminary findings with light therapy
Seasonal effects in prolactin response to m-chlorophenylpiperazine challenge in obsessive-compulsive disorder
Findings from the Seasonal Pattern Assessment Questionnaire in patients with eating disorders and control subjects: effects of diagnosis and location
Seasonality and circadian phase delay: prospective evidence that winter lowering of mood is associated with a shift towards Eveningness
The reliability and validity of the Seasonal Pattern Assessment Questionnaire: a comparison between patient groups
Measuring seasonality: psychometric properties of the Seasonal Pattern Assessment Questionnaire and the Inventory for Seasonal Variation
The Seasonal Pattern Assessment Questionnaire as a measure of mood seasonality: a prospective validation study
When disgust leads to dysphoria: a three-wave longitudinal study assessing the temporal relationship between self-disgust and depressive symptoms
CLOCK gene 3111C/T polymorphism is not associated with seasonal variations in mood and behavior in Korean college students
Pilot investigation of the circadian plasma melatonin rhythm across the menstrual cycle in a small group of women with premenstrual dysphoric disorder
Lifetime experiences of hypomanic symptoms are associated with delayed and irregular sleep-wake cycle and seasonality in non-clinical adult samples
Free thyroxine and thyroid-stimulating hormone levels in patients with seasonal affective disorder and matched controls
Seasonality, social zeitgebers and mood variability in entrainment of mood. Implications for seasonal affective disorder
Association of CLOCK, ARNTL, and NPAS2 gene polymorphisms and seasonal variations in mood and behavior
The effects of low-intensity narrow-band blue-light treatment compared to bright white-light treatment in sub-syndromal seasonal affective disorder
Are there any seasonal changes of cognitive impairment, depression, sleep disorders and quality of life in hemodialysis patients?
Controlled trial of safety and efficacy of bright light therapy vs. negative air ions in patients with bipolar depression
Illness Attitudes Associated with Seasonal Depressive Symptoms: An Examination Using a Newly Developed Implicit Measure
Self-reported seasonality is associated with complaints of sleep problems and deficient sleep duration: the Hordaland Health Study
Self-attributed seasonality of mood and behavior: a report from the Netherlands study of depression and anxiety
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