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. 2006 Jul 25;95(5):642–648. doi: 10.1038/sj.bjc.6603282

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Copyright © 2006 Cancer Research UK

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Observed and fitted (linear Poisson regression model) standardized incidence ratio (SIR) for breast cancer occurring 1–5 years after AIDS diagnosis (n=90 observed), by calendar year. A quadratic Poisson regression model did not fit the data better (P=0.10) than this linear model. The number of cancer cases expected in each even-number year is shown in italics.