Threshold hemoglobin and mortality in people with stable coronary disease

In this week's PLoS Medicine, Anoop Shah of University College London and colleagues report that, in people with stable coronary disease, there were threshold haemoglobin values below which mortality increased in a graded, continuous fashion. As well as a systematic review and statistical analysis of previous studies, the researchers conducted a retrospective analysis of patients from a prospective observational cohort.

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