A systematic review of mental disorder, suicide, and deliberate self harm in lesbian, gay and bisexual people

Background: Lesbian, gay and bisexual (LGB) people may be at higher risk of mental disorders than heterosexual people.Method: We conducted a systematic review and meta-analysis of the prevalence of mental disorder, substance misuse, suicide, suicidal ideation and deliberate self harm in LGB people. We searched Medline, Embase, PsycInfo, Cinahl, the Cochrane Library Database, the Web of Knowledge, the Applied Social Sciences Index and Abstracts, the International Bibliography of the Social Sciences, Sociological Abstracts, the Campbell Collaboration and grey literature databases for articles published January 1966 to April 2005. We also used Google and Google Scholar and contacted authors where necessary. We searched all terms related to homosexual, lesbian and bisexual people and all terms related to mental disorders, suicide, and deliberate self harm. We included papers on population based studies which contained concurrent heterosexual comparison groups and valid definition of sexual orientation and mental health outcomes.Results: Of 13706 papers identified, 476 were initially selected and 28 (25 studies) met inclusion criteria. Only one study met all our four quality criteria and seven met three of these criteria. Data was extracted on 214,344 heterosexual and 11,971 non heterosexual people. Meta-analyses revealed a two fold excess in suicide attempts in lesbian, gay and bisexual people [ pooled risk ratio for lifetime risk 2.47 (CI 1.87, 3.28)]. The risk for depression and anxiety disorders (over a period of 12 months or a lifetime) on meta-analyses were at least 1.5 times higher in lesbian, gay and bisexual people (RR range 1.54-2.58) and alcohol and other substance dependence over 12 months was also 1.5 times higher (RR range 1.51-4.00). Results were similar in both sexes but meta analyses revealed that lesbian and bisexual women were particularly at risk of substance dependence (alcohol 12 months: RR 4.00, CI 2.85, 5.61; drug dependence: RR 3.50, CI 1.87, 6.53; any substance use disorder RR 3.42, CI 1.97-5.92), while lifetime prevalence of suicide attempt was especially high in gay and bisexual men (RR 4.28, CI 2.32, 7.88).Conclusion: LGB people are at higher risk of mental disorder, suicidal ideation, substance misuse, and deliberate self harm than heterosexual people

The Impact of Mercenaries and Private Military and Security Companies on Civil War Severity between 1946 and 2002

Research has long abandoned the view that only states wage war. On the contrary, civil war research has produced an impressive body of literature on violent non-state actors. Still, a particular group of actors—mercenaries—has been widely neglected so far, although they have participated in numerous conflicts in the second half of the twentieth century. Whether their presence aggravated or improved the situation is a matter of dispute. Some believe that the additional military capabilities provided by mercenaries help to end civil wars quickly without increased bloodshed, while others deem mercenaries greedy and bloodthirsty combatants who contribute to making civil wars more brutal, while a third opinion differentiates between different types of mercenaries. This article tests the impact of mercenaries on civil war severity. The evidence indicates that the presence of both mercenaries and private military and security contractors increases its severity

CDOM sources and photobleaching control quantum yields for oceanic DMS photolysis

Photolysis is a major removal pathway for the biogenic gas dimethylsulfide (DMS) in the surface ocean. Here we tested the hypothesis that apparent quantum yields (AQY) for DMS photolysis varied according to the quantity and quality of its photosensitizers, chiefly chromophoric dissolved organic matter (CDOM) and nitrate. AQY compiled from the literature and unpublished studies ranged across 3 orders of magnitude at the 330 nm reference wavelength. The smallest AQY(330) were observed in coastal waters receiving major riverine inputs of terrestrial CDOM (0.06-0.5 m3 (mol quanta)-1). In open-ocean waters, AQY(330) generally ranged between 1 and 10 m3 (mol quanta) -1. The largest AQY(330), up to 34 m3 (mol quanta)-1), were seen in the Southern Ocean potentially associated with upwelling. Despite the large AQY variability, daily photolysis rate constants at the sea surface spanned a smaller range (0.04-3.7 d-1), mainly because of the inverse relationship between CDOM absorption and AQY. Comparison of AQY(330) with CDOM spectral signatures suggests there is an interplay between CDOM origin (terrestrial versus marine) and photobleaching that controls variations in AQYs, with a secondary role for nitrate. Our results can be used for regional or large-scale assessment of DMS photolysis rates in future studies.Fil: Galí, Martí. Laval University; CanadáFil: Kieber, David J.. State University of New York; Estados UnidosFil: Romera Castillo, Cristina. Miami University; Estados Unidos. Universidad de Viena; AustriaFil: Kinsey, Joanna D.. State University of New York; Estados Unidos. North Carolina State University; Estados UnidosFil: Devred, Emmanuel. Laval University; Canadá. Bedford Institute of Oceanography; CanadáFil: Pérez, Gonzalo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigaciones en Biodiversidad y Medioambiente. Universidad Nacional del Comahue. Centro Regional Universidad Bariloche. Instituto de Investigaciones en Biodiversidad y Medioambiente; ArgentinaFil: Westby, George R.. State University of New York; Estados UnidosFil: Marrasé, Cèlia. Consejo Superior de Investigaciones Científicas. Instituto de Ciencias del Mar. Biología Marina y Oceanografía; EspañaFil: Babin, Marcel. Laval University; CanadáFil: Levasseur, Maurice. Laval University; CanadáFil: Duarte, Carlos M.. King Abdullah University of Science and Technology; Arabia SauditaFil: Agusti, Susana. King Abdullah University of Science and Technology; Arabia SauditaFil: Simó, Rafael. Consejo Superior de Investigaciones Científicas. Instituto de Ciencias del Mar. Biología Marina y Oceanografía; Españ