Ao lado encontra-se figura do artigo original Sunshine and suicide at the tropic of Capricorn, São Paulo, Brazil, 1996–2004 de autoria de Kennedy Nejar, Isabela Benseñor e Paulo Lotufo. Encontra-se disponível no site da Revista de Saúde Pública (acesso livre). O abstract segue abaixo:
Several studies have confirmed seasonal variation in suicide rates according to hours of sunshine. The suicide pattern was assessed in São Paulo, southeastern Brazil, at the tropic of Capricorn from 1996 to 2004. Poisson regression was employed to estimate parameters of seasonality, as well as to verify associations for each day between daylight duration and suicide. During the nine-year study period, there were 3,984 suicides (76.9% in men; median age=38.7 years old). Seasonal averages of suicides were similar, as were monthly averages. Poisson regression did not reveal any association between suicide rates and hours of sunshine (p=0.45) for both sexes. In conclusion, no seasonal pattern was observed for suicides.