Data were organized using Excel 8.0 software
and processed using Statistical Package
for Social Sciences (SPSS) 17.0 for Windows. The
Fisher-Freeman-Halton and Z test were used for
proportions.
The study met national and international
ethics in research standards involving human
subjects and was conducted with the approval
of the Ethics Research Committee of the Federal
University of Piauí, in accordance with CAAE
0109.0.045.000-11 protocol.
RESULTS