title: Amazon forest fires between 2001 and 2006 and birth weight in Porto Velho.
abstract: Birth weight data (22,012 live-births) from a public hospital in Porto Velho (Amazon) was used in multiple statistical models to assess the effects of forest-fire smoke on human reproductive outcome. Mean birth weights for girls (3,139 g) and boys (3,393 g) were considered statistically different (p-value < 2.2e-16). Among all models analyzed, the means were considered statistically different only when treated as a function of month and year (p-value = 0.0989, girls and 0.0079, boys) . The R                         (2) statistics indicate that the regression models considered are able to explain 65 % (girls) and 54 % (boys) of the variation of the mean birth weight.
authors.affiliation: Institute of Mathematics, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil. taianeprass@gmail.com
authors.forename: Taiane S
authors.initials: TS
authors.lastname: Prass
authors.forename: Sílvia R C
authors.initials: SR
authors.lastname: Lopes
authors.forename: José G
authors.initials: JG
authors.lastname: Dórea
authors.forename: Rejane C
authors.initials: RC
authors.lastname: Marques
authors.forename: Katiane G
authors.initials: KG
authors.lastname: Brandão
mesh_terms: D000397:Air Pollution / Q000706:statistics & numerical data; D001724:Birth Weight; D001938:Brazil; D004781:Environmental Exposure / Q000009:adverse effects / Q000706:statistics & numerical data*; D005260:Female; D005390:Fires / Q000706:statistics & numerical data*; D006801:Humans; D007231:Infant, Newborn; D008297:Male; D015233:Models, Statistical; D012424:Rural Population; D014197:Trees