Effect of the medical emergency team on long-term mortality following major surgery

Table 3 Differences in the nature of operation clusters for patients admitted in the control and MET periods

	Control period	MET period	P value (OR, 95% CI)
Nonscheduled surgery	674	563	<0.0001 (0.66, 0.57–0.77)
Cardiac/thoracic aortic surgery (not CABG surgery)	73	41	0.001 (0.52, 0.35–0.77)
Hepatobiliary, pancreatic, and splenic surgery	96	74	0.04 (0.72, 0.52–0.99)
Orthopaedic 'other'	26	57	0.001 (2.15, 1.34–3.44)
Vascular bypass/fistula surgery	95	58	0.0008 (0.57, 0.41–0.79)
Intracranial haemorrhage/abscess drainage	29	9	0.0007 (0.29, 0.14–0.62)
Neurosurgery 'other'	42	27	0.04 (0.61, 0.37–0.99)
Anaesthesia related	12	26	0.03 (2.1, 1.05–4.20)
Urology 'other'	4	23	0.0004 (5.60, 1.92–16.2)

The characteristics of the operation clusters are outlined in Table 1. CABG, coronary artery bypass grafting; CI, confidence interval; MET, medical emergency team; OR, odds ratio.

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