Table 4.

Multivariable logistic regression analysis for in-hospital mortality within 90 days. Patients with unspecified sex removed before analysis. CI, confidence interval; GI, gastrointestinal; HPB, hepatopancreatobiliary; LGU, lower genitourinary; SARS-CoV-2, severe acute respiratory syndrome coronavirus 2; UGU, upper genitourinary.

	Odds ratio	Lower 95% CI	Upper 95% CI	P value
Intercept	<0.01	<0.01	<0.01	<0.001
SARS-CoV-2 code present	5.7	5.5	5.91	<0.001
Female compared with male	0.81	0.79	0.83	<0.001
Age (yr)	1.03	1.03	1.04	<0.001
Cancer present	1.04	1.01	1.08	0.01
Charlson Comorbidity Score: reference=0
Score 1	2.41	2.3	2.54	<0.001
Score 2	3.72	3.53	3.92	<0.001
Score 3	5.01	4.74	5.3	<0.001
Score 4	6.17	5.8	6.56	<0.001
Score 5	7.07	6.57	7.61	<0.001
Score ≥6	7.71	7.09	8.38	<0.001
Index of Multiple Deprivation: reference=quintile 1 (most deprived)
Quintile 2	0.99	0.95	1.03	0.55
Quintile 3	0.94	0.9	0.98	<0.001
Quintile 4	0.88	0.85	0.92	<0.001
Quintile 5 (least deprived)	0.88	0.84	0.91	<0.001
Missing quintile	1.17	1.03	1.33	0.016
Admission category: reference=elective
Emergency	23.54	22.33	24.83	<0.001
Maternity	2.07	0.78	5.46	0.14
Other	16.59	15.2	18.08	<0.001
Procedure grouping: reference=bone
Breast	0.23	0.14	0.38	<0.001
Cardiac	0.97	0.91	1.02	0.24
Cerebrovascular	2.67	2.31	3.09	<0.001
Ear	0.43	0.31	0.59	<0.001
Endocrine	1.32	0.94	1.86	0.107
Female LGU	0.51	0.34	0.79	0.002
Female UGU	0.37	0.28	0.49	<0.001
HPB	1.53	1.41	1.67	<0.001
Joint	1.05	0.99	1.12	0.077
Lower GI	1.73	1.63	1.83	<0.001
Major vessel	2.72	2.5	2.96	<0.001
Male GU	0.69	0.55	0.87	0.001
Muscle	0.81	0.66	0.99	0.035
Nasal	0.46	0.38	0.54	<0.001
Neuro	3.46	3.26	3.66	<0.001
Obstetrics	0.31	0.12	0.77	0.012
Ocular	0.09	0.06	0.11	<0.001
Oral	0.63	0.51	0.78	<0.001
Orthopaedics	0.43	0.25	0.74	0.003
Other	2.52	2.3	2.77	<0.001
Pharynx	1.71	1.3	2.26	<0.001
Skin	0.83	0.77	0.89	<0.001
Skull and spine	1.38	1.22	1.56	<0.001
Thoracic	5.07	4.75	5.41	<0.001
Upper GI	3.3	3.08	3.54	<0.001
Urological	0.89	0.83	0.97	0.004
Vascular	1.85	1.74	1.98	<0.001