TY  - JOUR
PY  - 2019//
TI  - Association between solar insolation and a history of suicide attempts in bipolar I disorder
JO  - Journal of psychiatric research
A1  - Bauer, Michael
A1  - Glenn, Tasha
A1  - Alda, Martin
A1  - Andreassen, Ole A.
A1  - Angelopoulos, Elias
A1  - Ardau, Raffaella
A1  - Ayhan, Yavuz
A1  - Baethge, Christopher
A1  - Bauer, Rita
A1  - Baune, Bernhard T.
A1  - Becerra-Palars, Claudia
A1  - Bellivier, Frank
A1  - Belmaker, Robert H.
A1  - Berk, Michael
A1  - Bersudsky, Yuly
A1  - Bicakci, Şule
A1  - Birabwa-Oketcho, Harriet
A1  - Bjella, Thomas D.
A1  - Cabrera, Jorge
A1  - Wo Cheung, Eric Y.
A1  - Del Zompo, Maria
A1  - Dodd, Seetal
A1  - Donix, Markus
A1  - Etain, Bruno
A1  - Fagiolini, Andrea
A1  - Fountoulakis, Kostas N.
A1  - Frye, Mark A.
A1  - Gonzalez-Pinto, Ana
A1  - Gottlieb, John F.
A1  - Grof, Paul
A1  - Harima, Hirohiko
A1  - Henry, Chantal
A1  - Isometsä, Erkki T.
A1  - Janno, Sven
A1  - Kapczinski, Flavio
A1  - Kardell, Mathias
A1  - Khaldi, Slim
A1  - Kliwicki, Sebastian
A1  - König, Barbara
A1  - Kot, Timur L.
A1  - Krogh, Rikke
A1  - Kunz, Mauricio
A1  - Lafer, Beny
A1  - Landén, Mikael
A1  - Larsen, Erik R.
A1  - Lewitzka, Ute
A1  - Licht, Rasmus W.
A1  - Lopez-Jaramillo, Carlos
A1  - MacQueen, Glenda
A1  - Manchia, Mirko
A1  - Marsh, Wendy
A1  - Martinez-Cengotitabengoa, Mónica
A1  - Melle, Ingrid
A1  - Meza-Urzúa, Fátima
A1  - Ming, Mok Yee
A1  - Monteith, Scott
A1  - Morken, Gunnar
A1  - Mosca, Enrica
A1  - Mozzhegorov, Anton A.
A1  - Munoz, Rodrigo
A1  - Mythri, Starlin V.
A1  - Nacef, Fethi
A1  - Nadella, Ravi K.
A1  - Nery, Fabiano G.
A1  - Nielsen, René E.
A1  - O'Donovan, Claire
A1  - Omrani, Adel
A1  - Osher, Yamima
A1  - Sørensen, Helle Østermark
A1  - Ouali, Uta
A1  - Ruiz, Yolanda Pica
A1  - Pilhatsch, Maximilian
A1  - Pinna, Marco
A1  - da Ponte, Francisco D. R.
A1  - Quiroz, Danilo
A1  - Ramesar, Raj
A1  - Rasgon, Natalie
A1  - Reddy, M. S.
A1  - Reif, Andreas
A1  - Ritter, Philipp
A1  - Rybakowski, Janusz K.
A1  - Sagduyu, Kemal
A1  - Raghuraman, Bharathram Sathur
A1  - Scippa, Ângela M.
A1  - Severus, Emanuel
A1  - Simhandl, Christian
A1  - Stackhouse, Paul W.
A1  - Stein, Dan J.
A1  - Strejilevich, Sergio
A1  - Subramaniam, Mythily
A1  - Sulaiman, Ahmad Hatim
A1  - Suominen, Kirsi
A1  - Tagata, Hiromi
A1  - Tatebayashi, Yoshitaka
A1  - Tondo, Leonardo
A1  - Torrent, Carla
A1  - Vaaler, Arne E.
A1  - Vares, Edgar
A1  - Veeh, Julia
A1  - Vieta, Eduard
A1  - Viswanath, Biju
A1  - Yoldi-Negrete, Maria
A1  - Zetin, Mark
A1  - Zgueb, Yosra
A1  - Whybrow, Peter C.
SP  - 1
EP  - 9
VL  - 113
IS  - 
N2  - In many international studies, rates of completed suicide and suicide attempts have a seasonal pattern that peaks in spring or summer. This exploratory study investigated the association between solar insolation and a history of suicide attempt in patients with bipolar I disorder. Solar insolation is the amount of electromagnetic energy from the Sun striking a surface area on Earth. Data were collected previously from 5536 patients with bipolar I disorder at 50 collection sites in 32 countries at a wide range of latitudes in both hemispheres. Suicide related data were available for 3365 patients from 310 onset locations in 51 countries. 1047 (31.1%) had a history of suicide attempt. There was a significant inverse association between a history of suicide attempt and the ratio of mean winter solar insolation/mean summer solar insolation. This ratio is smallest near the poles where the winter insolation is very small compared to the summer insolation. This ratio is largest near the equator where there is relatively little variation in the insolation over the year. Other variables in the model that were positively associated with suicide attempt were being female, a history of alcohol or substance abuse, and being in a younger birth cohort. Living in a country with a state-sponsored religion decreased the association. (All estimated coefficients p < 0.01). In summary, living in locations with large changes in solar insolation between winter and summer may be associated with increased suicide attempts in patients with bipolar disorder. Further investigation of the impacts of solar insolation on the course of bipolar disorder is needed.<br><br>Copyright © 2019 Elsevier Ltd. All rights reserved.<p />  <p>Language: en</p>
LA  - en
SN  - 0022-3956
UR  - http://dx.doi.org/10.1016/j.jpsychires.2019.03.001
ID  - ref1
ER  -