Seasonal Variations in Mood and Behaviour Associated with Gender, Annual Income and Education: The Hordaland Health Study

Øyane, Nicolas; Holsten, Fred; Ursin, Reidun; Bjorvatn, Bjørn

doi:10.1007/s10654-005-2952-0

Cited by 15 publications

(16 citation statements)

References 25 publications

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“…This is also demonstrated by the fact that high seasonality and SAD prevalence vary significantly when questionnaires are administered in different months, and subjects tend to underestimate seasonal vulnerability when asked in summer months (Lund and Hansen, 2001; Mersch et al. , 1999a; Oyane et al. , 2005).…”

Section: Discussionmentioning

confidence: 99%

“…The study protocol was approved by the Regional Ethics Committee and by the Norwegian Data Inspectorate. For more details concerning the study protocol, see previously published data based upon the current sample (Oyane et al. , 2005).…”

Section: Methodsmentioning

confidence: 99%

“…The mood and behaviour of most individuals vary by season to a certain degree (Dam et al. , 1998; Oyane et al. , 2005), and this phenomenon is usually referred to as seasonality.…”

Section: Introductionmentioning

confidence: 99%

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Self‐reported seasonality is associated with complaints of sleep problems and deficient sleep duration: the Hordaland Health Study

Øyane

Ursin

Pallesen

et al. 2008

Journal of Sleep Research

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SUMMAR Y Change in sleep duration dependent on time of year is a central characteristic of seasonal affective disorder (SAD). In a community health survey, we analysed associations between seasonality, subjective sleep problems and sleep duration. Totally, 8860 subjects (3531 men and 5329 women) aged between 40 and 44 years were included in the study. Seasonal changes in mood and behaviour were measured by the Global Seasonality Score (GSS) questionnaire, and subjects were grouped in high (GSS ‡ 11), moderate (GSS 8-10) or low (GSS < 8) seasonality groups. Sleep symptomatology was assessed using a modified version of the Karolinska Sleep Questionnaire. Significant sleep duration deficiency was defined as the difference between subjective sleep need and sleep duration of at least 1 h. Sleep problems suggesting insomnia as well as increased daytime sleepiness were more prevalent in the high ⁄ moderate seasonality groups compared with the low seasonality group. Seasonality was furthermore associated with shorter sleep duration and increased subjective sleep need. Significant sleep duration deficiency was more prevalent in subjects reporting high (men 20% and women 21%) and moderate (men 13% and women 19%) seasonality than subjects reporting low (men 10% and women 14%) seasonality. In conclusion, we found seasonal changes in mood and behaviour to be associated with several sleep-related complaints. Sleep duration deficiency increased with increasing seasonality, mainly due to increasing subjective sleep need.k e y w o r d s epidemiology, seasonality, sleep duration, subjective sleep complaints

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Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Self‐reported seasonality is associated with complaints of sleep problems and deficient sleep duration: the Hordaland Health Study

Øyane

Ursin

Pallesen

et al. 2008

Journal of Sleep Research

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“…However, in the modern society, with access to plentiful resources year round, seasonality may conversely be a stress factor. Recently we reported associations between high levels of seasonality, low socioeconomic status and depression [4], [9].…”

Section: Introductionmentioning

confidence: 97%

“…Variations in mood and behaviour across the seasons, also known as seasonality, are reported by most humans in the Western countries to a certain degree [1]–[4]. Seasonal Affective Disorder (SAD) is characterized by major depressive episodes occurring exclusively during a particular time of the year [5], and could be the result of a high seasonality combined with a high vulnerability for depression [6], [7].…”

Section: Introductionmentioning

confidence: 99%

Increased Health Risk in Subjects with High Self-Reported Seasonality

et al. 2010

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BackgroundSeasonal variations in mood and behaviour, termed seasonality, are commonly reported in the general population. As a part of a large cross-sectional health survey in Hordaland, Norway, we investigated the relationship between seasonality, objective health measurements and health behaviours.Methodology/Principal FindingsA total of 11,545 subjects between 40–44 years old participated, completing the Global Seasonality Score, measuring seasonality. Waist/hip circumference, BMI and blood pressure were measured, and blood samples were analyzed for total cholesterol, HDL cholesterol, triglycerides and glucose. Subjects also completed a questionnaire on miscellaneous health behaviours (exercise, smoking, alcohol consumption). Hierarchical linear regression analyses were used to investigate associations between seasonality and objective health measurements, while binary logistic regression was used for analysing associations between seasonality and health behaviours. Analyses were adjusted for sociodemographic factors, month of questionnaire completion and sleep duration. Seasonality was positively associated with high waist-hip-ratio, BMI, triglyceride levels, and in men high total cholesterol. Seasonality was negatively associated with HDL cholesterol. In women seasonality was negatively associated with prevalence of exercise and positively associated with daily cigarette smoking.Conclusions/SignificanceHigh seasonality was associated with objective health risk factors and in women also with health behaviours associated with an increased risk for cardiovascular disease.

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Seasonality is associated with anxiety and depression: The Hordaland health study

Øyane¹,

Bjelland²,

Pallesen³

et al. 2008

Journal of Affective Disorders

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Seasonal Variations in Mood and Behaviour Associated with Gender, Annual Income and Education: The Hordaland Health Study

Abstract: In this study, high seasonality was most prevalent among females, being single, having a low annual income and a low education level. The latter two findings are different from expectations which could be drawn from previous studies suggesting an opposite association.

Cited by 15 publications

References 25 publications

Self‐reported seasonality is associated with complaints of sleep problems and deficient sleep duration: the Hordaland Health Study

Self‐reported seasonality is associated with complaints of sleep problems and deficient sleep duration: the Hordaland Health Study

Increased Health Risk in Subjects with High Self-Reported Seasonality

Seasonality is associated with anxiety and depression: The Hordaland health study

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