The Poisson test of trend had results of borderline significance (P=0.06).
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Mortality after hospital discharge for people with schizophrenia or bipolar disorder: retrospective study of linked English hospital episode statistics, 1999-2006.
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0.0600
The sentences
We used the Poisson test of trend to investigate whether there was a significant trend in standardised mortality ratios over time. 24 Results Trends in discharges with schizophrenia and bipolar disorder For this study we included 100 851 discharges from hospital for bipolar disorder and 272 248 discharges for schizophrenia in England for 1999-2006.