<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD><TITLE id=ridTitle>Geleira</TITLE><BASE
href="file://C:\Arquivos de programas\Arquivos comuns\Microsoft Shared\Papel de carta\">
<META http-equiv=Content-Type content="text/html; charset=iso-8859-1">
<STYLE>BODY {
MARGIN-TOP: 20px; FONT-SIZE: 10pt; MARGIN-LEFT: 50px; COLOR: #006666; FONT-FAMILY: Arial, Helvetica
}
</STYLE>
<META content="MSHTML 6.00.5730.13" name=GENERATOR></HEAD>
<BODY id=ridBody bgColor=#ffffff
background=cid:F7D89CB95DD9480BAC3836906CDAC3A3@inca.local>
<DIV>Hello!<BR>I work at National Cancer Institute, Brazil and I’m interested on
fit age-period-cohort models for lung cancer mortality rates.<BR>I’m using the
Epi package, but I have a problem. There is over-dispersion on my data. How can
I deal with this problem? Some one can suggest a solution?<BR>Thanks<BR>--</DIV>
<DIV>Mirian Carvalho de Souza<BR>Instituto Nacional de Câncer/MS</DIV>
<P> </P></BODY></HTML>