Retrospective Evidence

The article cautions that causality cannot be established from the retrospective studies. Retrospective evidence cannot establish whether worse outcomes are caused by NGT use or by selection bias. Retrospective studies have questioned rout…

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The article cautions that causality cannot be established from the retrospective studies. Retrospective evidence cannot establish whether worse outcomes are caused by NGT use or by selection bias. Retrospective studies have questioned routine NGT use in ASBO. Local John Hunter Hospital retrospective data associated NGT use with higher operative intervention and longer hospital stay.