Predictors of unplanned hospital readmission after non-cardiac surgery in Singapore: a 2-year retrospective review

Table 2 Multivariable analysis of risk factors associated with 30-day readmission

	Multivariable Analysis
Risk Factors	OR	95% CI	Adjusted p-value
Age	1.01	1,00 – 1.02	0.14
ASA Classification Grades 3–5	1.51	1.10 – 2.08	0.01
Type of Surgery
General Surgery, Urology, O&G
Orthopaedics	0.71	0.50 – 1.00	0.05
Neurosurgery	0.82	0.46 – 1.45	0.49
Ophthalmology & Otolaryngology	0.56	0.30 – 1.04	0.06
Thoracic and Vascular	0.74	0.45 – 1.23	0.24
Others	0.94	0.40 – 2.19	0.88
Obesity (BMI > 27.5)	1.66	1.18 – 2.34	0.04
Asthma	1.70	1.03 – 2.81	0.04
Hypertension	0.86	0.61 – 1.22	0.40
Hyperlipidaemia	1.05	0.76 – 1.46	0.75
Diabetes Mellitus	1.16	0.84 – 1.60	0.36
Renal Disease	2.03	1.41 – 2.92	< 0.001
Malignancy	1.68	1.29 – 2.37	< 0.001
Ischaemic Heart Disease	0.95	0.66 – 1.35	0.76
Peripheral Vascular Disease	1.58	0.89 – 2.79	0.12
Arrhythmias	1.43	0.91 – 2.25	0.12
Chronic Obstructive Pulmonary Disease	2.46	1.19 – 5.11	0.02
Cerebrovascular Disease	1.73	1.17 – 2.58	< 0.001
Other CNS Comorbidities	0.86	0.42 – 1.78	0.70
Anaemia^a	1.45	1.07 – 1.96	0.02

CI Confidence Interval, OR Odds Ratio, ASA American Society of Anesthesiologists, BMI Body Mass Index, CNS Central Nervous System, O&G Obstetrics and Gynaecology
^aAnaemia: Hb ≤ 12.0 g/dL (female), Hb ≤ 13.0 g/dL (male)

ISSN: 1471-2482