Table 2.

Univariate associations and the performance of single predictors of 90-day mortality in acutely hospitalized older patients

	Univariate		Performance
	Number (%)a	OR	95 % CI	Sens	Spec	PPV	NPV	AUC
Age (per 5 years increase)	–	1.05	0.88–1.25	–	–	–	–	0.52
Male	269 (52)	1.38	0.88–2.17	0.59	0.49	0.20	0.84	0.54
Saturation	108 (21)	2.21	1.35–3.63	0.33	0.82	0.29	0.85	0.57
Systolic blood pressure	39 (8)	1.39	0.64–3.03	0.10	0.93	0.23	0.82	0.51
Diastolic blood pressure	206 (40)	1.21	0.77–1.90	0.44	0.61	0.20	0.83	0.52
Heart rate	136 (26)	1.68	1.04–2.71	0.35	0.76	0.24	0.84	0.55
Charlson comorbidity indexb	91 (18)	3.64	2.20–6.03	0.36	0.87	0.37	0.86	0.61
Number of medications	153 (30)	1.53	0.96–2.45	0.37	0.72	0.23	0.84	0.55
Thrombocytes	139 (27)	2.16	1.35–3.46	0.40	0.76	0.27	0.85	0.58
Urea	126 (24)	2.44	1.52–3.92	0.39	0.79	0.29	0.85	0.59
Leukocytes	169 (33)	1.43	0.90–2.27	0.39	0.69	0.22	0.84	0.54
Sodium	162 (31)	1.16	0.72–1.87	0.34	0.69	0.20	0.83	0.52
Potassium	134 (26)	1.73	1.07–2.78	0.35	0.76	0.25	0.84	0.56
Haemoglobin	161 (31)	1.57	0.98–2.49	0.39	0.71	0.23	0.84	0.55
C-reactive protein	141 (27)	1.77	1.11–2.85	0.37	0.75	0.25	0.84	0.56
Non-fasted glucose	361 (70)	0.51	0.32–0.81	0.43	0.73	0.26	0.85	0.58
eGFR	76 (15)	0.48	0.28–0.84	0.23	0.87	0.29	0.84	0.55

eGFR estimated glomerular filtration rate

^aNumber represents number of patients outside reference category

^bIncorporates weighted scores for 19 medical conditions, higher scores indicating worse history of disease