Table 2.

Multivariable stepwise Cox regression to assess the risk of mortality over a 2-year period from conditions most commonly associated with frequent emergency readmissions (see supplementary material S3)

	Risk of mortality
	Unadjusted			Age and sex adjusted
Died over a 2-year period	HR	95% CI	p	HR	95% CI	p
Congestive heart failure	5.18	4.35–6.17	<0.001	2.65	2.22–3.15	<0.001
Chronic obstructive pulmonary disease	4.21	3.53–5.03	<0.001	2.98	2.49–3.55	<0.001
Pneumonia	3.47	3.12–3.87	<0.001	2.02	1.82–2.25	<0.001
Sepsis	2.47	2.14–2.84	<0.001	2.21	1.92–2.54	<0.001
Endocrine disorders	1.49	1.24–1.79	<0.001	1.91	1.59–2.30	<0.001
Urinary tract infection	2.70	2.35–3.11	<0.001	1.45	1.25–1.67	<0.001
Psychiatric disorders	1.77	1.28–2.46	0.001	1.54	1.11–2.13	0.009
Haematological disorders	1.37	1.08–1.74	0.009	1.52	1.20–1.93	0.001
Any one of the eight index admissions	2.69	2.51–2.88	<0.001	1.97	1.84–2.12	<0.001

CI = confidence interval; HR = hazard ratio.