Peripheral perfusion index predicting prolonged ICU stay earlier and better than lactate in surgical patients: an observational study

Table 4 Univariate logistic regression analysis for possible risk factors of prolonged ICU stay

Variable	B	SE	Wald	P	OR		95% CI for OR
Variable	B	SE	Wald	P	OR		Lower	Upper
Univariate
Age /y		−0.028	0.025	1.212	0.271	0.973	0.926	1.022
Gender		0.455	0.355	1.641	0.200	1.576	0.786	3.162
SOFA		0.080	0.171	0.220	0.639	1.084	0.775	1.516
APACHE II		0.153	0.184	0.692	0.406	1.166	0.812	1.672
Surgical length /ml		0.007	0.004	2.671	0.102	1.007	0.999	1.015
Intraoperative fluid infusion		−0.001	0.001	1.113	0.291	0.999	0.998	1.000
Fluid balance /ml	0-6 h	−0.001	0.002	0.265	0.606	1.001	0.997	1.005
Fluid balance /ml	0-12 h	−0.002	0.001	1.809	0.179	0.998	0.995	1.001
HR bpm	T0	−0.006	0.024	0.054	0.816	0.994	0.948	1.043
	T1	−0.020	0.043	0.226	0.634	0.980	0.900	1.066
	T2	−0.009	0.035	0.063	0.802	0.991	0.925	1.062
MAP /mmHg	T0	−0.013	0.033	0.165	0.685	0.987	0.926	1.052
	T1	−0.021	0.049	0.180	0.671	0.979	0.890	1.078
	T2	0.034	0.042	0.651	0.420	1.034	0.953	1.123
PPI	T0	−2.088	0.701	8.866	*0.003*	0.124	0.031	0.490
	T1	−2.586	0.734	12.424	*< 0.001*	0.075	0.018	0.317
	T2	−1.296	0.850	2.327	0.127	0.274	0.052	1.447
Lactate /mmol. L⁻¹	T0	−0.009	0.334	0.001	0.978	0.991	0.515	1.907
	T1	1.023	0.407	6.331	*0.012*	2.783	1.254	6.175
	T2	4.645	1.000	21.575	*< 0.001*	104.103	14.662	739.179
T /°C	T0	−0.039	0.718	0.003	0.957	0.962	0.236	3.929
	T1	1.689	1.221	1.912	0.167	5.412	0.494	59.257
	T2	0.365	0.574	0.405	0.524	1.441	0.468	4.441

ISSN: 1471-2253