Psychiatric hospitalizations for affective disorders in Warsaw, Poland: Effect of season and intensity of sunlight
Abstract The purpose of this study was to assess any associations between the number of hospitalizations for affective disorders, seasons of the year and the intensity of sunlight in Poland, a country with a very changeable climate and significant seasonal fluctuations. We analyzed 2837 admissions w...
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| Veröffentlicht in: | Psychiatry research 2015-09, Vol.229 (1), p.287-294 |
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| creator | Dominiak, Monika Swiecicki, Lukasz Rybakowski, Janusz |
| description | Abstract The purpose of this study was to assess any associations between the number of hospitalizations for affective disorders, seasons of the year and the intensity of sunlight in Poland, a country with a very changeable climate and significant seasonal fluctuations. We analyzed 2837 admissions with affective disorders hospitalized in the Institute of Psychiatry and Neurology in Warsaw, between 2002 and 2010 (mania, n =380, mixed episode, n =131, bipolar depression, n =736, recurrent depression, n =681, single depressive episode, n =909). For each diagnostic group admission time series were created and categorized into subgroups according to sex and age, and these were analyzed by means of the Autoregressive Integrated Moving Average (ARIMA) method. Regression models and correlations were used to assess the influence of the intensity of sunlight on the number of hospitalizations. Most mania admissions were noted in spring/summer months and in midwinter, mixed episode—late spring and winter, and depression (bipolar, recurrent and single depressive episode)—spring and autumn months. The association between frequency of admissions and monthly hours of sunshine was observed in some age and sex subgroups of patients with bipolar disorder and single depressive episode. The results support the seasonality of admissions of patients with affective disorders. |
| doi_str_mv | 10.1016/j.psychres.2015.07.011 |
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We analyzed 2837 admissions with affective disorders hospitalized in the Institute of Psychiatry and Neurology in Warsaw, between 2002 and 2010 (mania, n =380, mixed episode, n =131, bipolar depression, n =736, recurrent depression, n =681, single depressive episode, n =909). For each diagnostic group admission time series were created and categorized into subgroups according to sex and age, and these were analyzed by means of the Autoregressive Integrated Moving Average (ARIMA) method. Regression models and correlations were used to assess the influence of the intensity of sunlight on the number of hospitalizations. Most mania admissions were noted in spring/summer months and in midwinter, mixed episode—late spring and winter, and depression (bipolar, recurrent and single depressive episode)—spring and autumn months. The association between frequency of admissions and monthly hours of sunshine was observed in some age and sex subgroups of patients with bipolar disorder and single depressive episode. The results support the seasonality of admissions of patients with affective disorders.</description><identifier>ISSN: 0165-1781</identifier><identifier>EISSN: 1872-7123</identifier><identifier>DOI: 10.1016/j.psychres.2015.07.011</identifier><identifier>PMID: 26189339</identifier><language>eng</language><publisher>Ireland: Elsevier Ireland Ltd</publisher><subject>Adult ; Aged ; Amount of sunlight ; Bipolar depression ; Bipolar Disorder - diagnosis ; Bipolar Disorder - epidemiology ; Bipolar Disorder - psychology ; Depression - diagnosis ; Depression - epidemiology ; Depression - psychology ; Depressive Disorder, Major - diagnosis ; Depressive Disorder, Major - epidemiology ; Depressive Disorder, Major - psychology ; Female ; Hospital admissions ; Hospitalization - trends ; Hospitals, Psychiatric - trends ; Humans ; Male ; Mania ; Middle Aged ; Mood Disorders - diagnosis ; Mood Disorders - epidemiology ; Mood Disorders - psychology ; Poland - epidemiology ; Psychiatry ; Recurrent depression ; Retrospective Studies ; Seasonality ; Seasons ; Sunlight</subject><ispartof>Psychiatry research, 2015-09, Vol.229 (1), p.287-294</ispartof><rights>Elsevier Ireland Ltd</rights><rights>2015 Elsevier Ireland Ltd</rights><rights>Copyright © 2015 Elsevier Ireland Ltd. All rights reserved.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c493t-1b1dc4d29c661880f5ac482d7f3fb30478600c2d05f3987a5e121954610017763</citedby><cites>FETCH-LOGICAL-c493t-1b1dc4d29c661880f5ac482d7f3fb30478600c2d05f3987a5e121954610017763</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.psychres.2015.07.011$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3550,27924,27925,45995</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/26189339$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Dominiak, Monika</creatorcontrib><creatorcontrib>Swiecicki, Lukasz</creatorcontrib><creatorcontrib>Rybakowski, Janusz</creatorcontrib><title>Psychiatric hospitalizations for affective disorders in Warsaw, Poland: Effect of season and intensity of sunlight</title><title>Psychiatry research</title><addtitle>Psychiatry Res</addtitle><description>Abstract The purpose of this study was to assess any associations between the number of hospitalizations for affective disorders, seasons of the year and the intensity of sunlight in Poland, a country with a very changeable climate and significant seasonal fluctuations. We analyzed 2837 admissions with affective disorders hospitalized in the Institute of Psychiatry and Neurology in Warsaw, between 2002 and 2010 (mania, n =380, mixed episode, n =131, bipolar depression, n =736, recurrent depression, n =681, single depressive episode, n =909). For each diagnostic group admission time series were created and categorized into subgroups according to sex and age, and these were analyzed by means of the Autoregressive Integrated Moving Average (ARIMA) method. Regression models and correlations were used to assess the influence of the intensity of sunlight on the number of hospitalizations. Most mania admissions were noted in spring/summer months and in midwinter, mixed episode—late spring and winter, and depression (bipolar, recurrent and single depressive episode)—spring and autumn months. The association between frequency of admissions and monthly hours of sunshine was observed in some age and sex subgroups of patients with bipolar disorder and single depressive episode. The results support the seasonality of admissions of patients with affective disorders.</description><subject>Adult</subject><subject>Aged</subject><subject>Amount of sunlight</subject><subject>Bipolar depression</subject><subject>Bipolar Disorder - diagnosis</subject><subject>Bipolar Disorder - epidemiology</subject><subject>Bipolar Disorder - psychology</subject><subject>Depression - diagnosis</subject><subject>Depression - epidemiology</subject><subject>Depression - psychology</subject><subject>Depressive Disorder, Major - diagnosis</subject><subject>Depressive Disorder, Major - epidemiology</subject><subject>Depressive Disorder, Major - psychology</subject><subject>Female</subject><subject>Hospital admissions</subject><subject>Hospitalization - trends</subject><subject>Hospitals, Psychiatric - trends</subject><subject>Humans</subject><subject>Male</subject><subject>Mania</subject><subject>Middle Aged</subject><subject>Mood Disorders - diagnosis</subject><subject>Mood Disorders - epidemiology</subject><subject>Mood Disorders - psychology</subject><subject>Poland - epidemiology</subject><subject>Psychiatry</subject><subject>Recurrent depression</subject><subject>Retrospective Studies</subject><subject>Seasonality</subject><subject>Seasons</subject><subject>Sunlight</subject><issn>0165-1781</issn><issn>1872-7123</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2015</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqFkUtv1DAQgC0EotvCX6h85EDCjPNwwgGBqlKQKlEJEEfL6wfrJRsvnqRo-fU43ZYDF04jjb55fcPYOUKJgO2rbbmng9kkR6UAbEqQJSA-YivspCgkiuoxW2WwKVB2eMJOibYAILDvn7IT0WLXV1W_YulmaRP0lILhm0j7MOkh_NZTiCNxHxPX3jszhVvHbaCYrEvEw8i_6UT610t-Ewc92tf88g7j0XNymuLIczZzkxspTIe7_DwO4ftmesaeeD2Qe34fz9jX95dfLj4U15-uPl68uy5M3VdTgWu0praiN23etgPfaFN3wkpf-XUFtexaACMsNL7qO6kbh_m6pm4RAKVsqzP24th3n-LP2dGkdoGMG_K-Ls6kUEIrsK67JqPtETUpEiXn1T6FnU4HhaAW32qrHnyrxbcCqbLvXHh-P2Ne75z9W_YgOANvj4DLl94GlxSZ4EbjbEjZl7Ix_H_Gm39amCGMwejhhzs42sY5jdmjQkVCgfq8fH15OjYAddPW1R_kxqqD</recordid><startdate>20150930</startdate><enddate>20150930</enddate><creator>Dominiak, Monika</creator><creator>Swiecicki, Lukasz</creator><creator>Rybakowski, Janusz</creator><general>Elsevier Ireland Ltd</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope></search><sort><creationdate>20150930</creationdate><title>Psychiatric hospitalizations for affective disorders in Warsaw, Poland: Effect of season and intensity of sunlight</title><author>Dominiak, Monika ; Swiecicki, Lukasz ; Rybakowski, Janusz</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c493t-1b1dc4d29c661880f5ac482d7f3fb30478600c2d05f3987a5e121954610017763</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2015</creationdate><topic>Adult</topic><topic>Aged</topic><topic>Amount of sunlight</topic><topic>Bipolar depression</topic><topic>Bipolar Disorder - diagnosis</topic><topic>Bipolar Disorder - epidemiology</topic><topic>Bipolar Disorder - psychology</topic><topic>Depression - diagnosis</topic><topic>Depression - epidemiology</topic><topic>Depression - psychology</topic><topic>Depressive Disorder, Major - diagnosis</topic><topic>Depressive Disorder, Major - epidemiology</topic><topic>Depressive Disorder, Major - psychology</topic><topic>Female</topic><topic>Hospital admissions</topic><topic>Hospitalization - trends</topic><topic>Hospitals, Psychiatric - trends</topic><topic>Humans</topic><topic>Male</topic><topic>Mania</topic><topic>Middle Aged</topic><topic>Mood Disorders - diagnosis</topic><topic>Mood Disorders - epidemiology</topic><topic>Mood Disorders - psychology</topic><topic>Poland - epidemiology</topic><topic>Psychiatry</topic><topic>Recurrent depression</topic><topic>Retrospective Studies</topic><topic>Seasonality</topic><topic>Seasons</topic><topic>Sunlight</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Dominiak, Monika</creatorcontrib><creatorcontrib>Swiecicki, Lukasz</creatorcontrib><creatorcontrib>Rybakowski, Janusz</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>Psychiatry research</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Dominiak, Monika</au><au>Swiecicki, Lukasz</au><au>Rybakowski, Janusz</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Psychiatric hospitalizations for affective disorders in Warsaw, Poland: Effect of season and intensity of sunlight</atitle><jtitle>Psychiatry research</jtitle><addtitle>Psychiatry Res</addtitle><date>2015-09-30</date><risdate>2015</risdate><volume>229</volume><issue>1</issue><spage>287</spage><epage>294</epage><pages>287-294</pages><issn>0165-1781</issn><eissn>1872-7123</eissn><abstract>Abstract The purpose of this study was to assess any associations between the number of hospitalizations for affective disorders, seasons of the year and the intensity of sunlight in Poland, a country with a very changeable climate and significant seasonal fluctuations. We analyzed 2837 admissions with affective disorders hospitalized in the Institute of Psychiatry and Neurology in Warsaw, between 2002 and 2010 (mania, n =380, mixed episode, n =131, bipolar depression, n =736, recurrent depression, n =681, single depressive episode, n =909). For each diagnostic group admission time series were created and categorized into subgroups according to sex and age, and these were analyzed by means of the Autoregressive Integrated Moving Average (ARIMA) method. Regression models and correlations were used to assess the influence of the intensity of sunlight on the number of hospitalizations. Most mania admissions were noted in spring/summer months and in midwinter, mixed episode—late spring and winter, and depression (bipolar, recurrent and single depressive episode)—spring and autumn months. The association between frequency of admissions and monthly hours of sunshine was observed in some age and sex subgroups of patients with bipolar disorder and single depressive episode. The results support the seasonality of admissions of patients with affective disorders.</abstract><cop>Ireland</cop><pub>Elsevier Ireland Ltd</pub><pmid>26189339</pmid><doi>10.1016/j.psychres.2015.07.011</doi><tpages>8</tpages></addata></record> |
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| subjects | Adult Aged Amount of sunlight Bipolar depression Bipolar Disorder - diagnosis Bipolar Disorder - epidemiology Bipolar Disorder - psychology Depression - diagnosis Depression - epidemiology Depression - psychology Depressive Disorder, Major - diagnosis Depressive Disorder, Major - epidemiology Depressive Disorder, Major - psychology Female Hospital admissions Hospitalization - trends Hospitals, Psychiatric - trends Humans Male Mania Middle Aged Mood Disorders - diagnosis Mood Disorders - epidemiology Mood Disorders - psychology Poland - epidemiology Psychiatry Recurrent depression Retrospective Studies Seasonality Seasons Sunlight |
| title | Psychiatric hospitalizations for affective disorders in Warsaw, Poland: Effect of season and intensity of sunlight |
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