Follow-up of the air pollution and the human male-to-female ratio analysis in Sao Paulo, Brazil: a times series study.

ABSTRACT: In order to assess if ambient air pollution in urban areas could be related to alterations in male/female ratio this study objectives to evaluate changes in ambient particulate matter (PM10) concentrations after implementation of pollution control programmes in São Paulo city and the secondary sex ratio (SRR). A time series study was conducted. São Paulo's districts were stratified according to the PM10 concentrations levels and were used as a marker of overall air pollution. The male ratio was chosen to represent the secondary sex ratio (SSR=total male birth/total births). The SSR data from each area was analysed according to the time variation and PM10 concentration areas using descriptive statistics. The strength association between annual average of PM10 concentration and SSR was perfo

SUBMITTER: Miraglia SG 

PROVIDER: S-EPMC3731748 | biostudies-literature | 2013

REPOSITORIES: biostudies-literature