Table 2.

Univariate analysis of the impact of cohort characteristics with outcomes

Characteristic	30-day mortality			30-day re-admission			Clinical deterioration at 7 days
	Odds ratio	95% confidence interval	p- value	Odds ratio	95% confidence interval	p- value	Odds ratio	95% confidence interval	p- value
Higher age	1.015	0.968 – 1.064	0.545	1.021	0.989 – 1.055	0.198	1.027	0.990 – 1.064	0.155
Prior ICUa admission	0.351	0.043 – 2.875	0.329	0.975	0.355 – 2.725	0.975	0.547	0.150 – 1.996	0.361
Higher Charlson co-morbidity index	1.064	0.871 – 1.301	0.542	1.033	0.897 – 1.190	0.653	1.028	0.884 – 1.194	0.724
Clinical discipline (relative to surgery)
• Hematology-oncology	N.A.*	N.A.*	N.A.*	3.855	1.241 – 11.980	0.020	3.462	0.875 – 13.693	0.077
• Orthopedics	0.452	0.085 – 2.390	0.265	1.720	0.453 – 6.530	0.426	3.333	0.770 – 14.436	0.107
• Medicine	1.273	0.225 – 7.197	0.792	1.911	0.319 – 11.450	0.478	2.727	0.405 – 18.358	0.302
• Others	N.A.*	N.A.*	N.A.*	N.A.*	N.A.*	N.A.*	N.A.*	N.A.*	N.A.*
Type of infection (relative to intra-abdominal infections)
• Bloodstream	0.882	0.074 – 10.464	0.921	0.438	0.080 – 2.400	0.342	1.080	0.226 – 5.162	0.923
• Bone and joint infection	1.957	0.302 – 12.692	0.482	0.493	0.112 – 2.164	0.349	1.286	0.329 – 5.032	0.718
• Skin and soft tissue infection	1.579	0.205 – 12.173	0.661	0.616	0.138 – 2.749	0.526	N.A.*	N.A.*	N.A.*
• Respiratory tract infection	N.A.*	N.A.*	N.A.*	1.095	0.179 – 6.694	0.922	0.771	0.077 – 7.712	0.825
• Urinary tract infection	1.000	0.084 – 11.931	1.000	0.548	0.098 – 3.057	0.492	1.246	0.257 – 6.031	0.784
• Others	0.750	0.064 – 8.834	0.819	1.095	0.293 – 4.097	0.526	0.900	0.191 – 4.243	0.894
ASP recommendation accepted	1.004	0.247 – 4.079	0.996	1.412	0.517 – 3.859	0.501	0.225	0.084 – 0.600	0.003

^aICU = intensive care unit.

^*N.A. = predicted failure of regression perfectly (none or all patients in this category).