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

Table 5 Multivariate logistic regression analysis for death within 1500 days after surgery for patients admitted in both the control and MET periods

	Odds ratio	95% CI	P value	VIF
Age (per 10 years)	1.73	1.61–1.86	<0.001	1.09
MET period^a	0.74	0.60–0.92	0.005	1.02
Female sex	0.72	0.58–0.89	0.002	1.05
Nonscheduled surgery	1.51	1.21–1.89	<0.001	1.18
Admitting unit
Cardiac surgery	0.33	0.22–0.48	<0.001	1.28
Thoracic surgery	2.76	1.89–4.03	<0.001	1.36
Orthopaedic surgery	0.50	0.37–0.69	<0.001	1.43
Vascular surgery	0.66	0.46–0.94	0.023	1.20
Neurosurgery	1.60	1.03–2.48	0.036	1.63
Liver transplant unit	0.30	0.09–1.03	0.056	1.05
Oncology	10.48	1.2–91.65	0.034	1.01
General medicine	3.00	1.13–7.95	0.027	1.02
Procedure
Bronchoscopy	3.13	1.24–7.88	0.015	1.16
Breast surgery	0.20	0.04–0.95	0.043	1.04
Spinal fusion	0.34	0.17–0.68	0.002	1.21
Cerebral resection	3.30	1.6–6.77	0.001	1.33
Cystoscopy ± bladder tumour resection	2.90	1.04–8.08	0.042	1.02

The characteristics of the operation clusters are outlined in Table 1. For this model, the Hosmer-Lemeshow goodness-of-fit statistic was 13.1 (P = 0.11). The percentage of appropriately classified patients in the final model is 75.3%. ^aThe OR and 95% CI for introduction of the MET pertains to that derived from the multivariate model. CI, confidence interval; OR, odds ratio; VIF, variance inflation factor.

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