J Clin Med Res

Journal of Clinical Medicine Research, ISSN 1918-3003 print, 1918-3011 online, Open Access

Article copyright, the authors; Journal compilation copyright, J Clin Med Res and Elmer Press Inc

Journal website http://www.jocmr.org

Original Article

Volume 10, Number 12, December 2018, pages 898-903

APACHE II Death Risk and Length of Stay in the ICU Are Associated With Pressure Injury in Critically Ill Patients

Figure

Figure 1. Study screening process.

Tables

**Table 1.** Qualitative Variables in Patients Without and With Pressure Injury (PI) and Univariate Analysis
Variables	Patients without PI (n = 121)		Patients with PI (n = 21)		P value
Variables	n	%	n	%	P value
PI: pressure injury; P value: univariate analysis by Fisher’s exact test.
Gender
Male	61	52	13	62	0.23
Female	60	48	8	38
Reason for ICU admission
Clinical	82	68	18	86	0.07
Surgical	39	32	3	14

**Table 2.** Quantitative Variables in Patients Without and With Pressure Injury (PI) and Univariate Analysis
Variables	Patients without PI		Patients with PI		P value
Variables	Median	(min - max)	Median	(min - max)	P value
LOS: length of stay in the ICU; PI: pressure injury; P value: univariate analysis by Wilcoxon test.
Age (years)	58	18 - 101	62	21 - 86	0.09
Braden scale risk score (per point increase)	13	8 - 20	10	8 - 14	0.0003
APACHE II death risk (%)	39	2 - 97	75	26 - 96	< 0.0001
LOS (days)	4	2 - 36	16	5 - 29	< 0.0001

**Table 3.** Multivariate Analysis of Pressure Injury (PI) Considering Age, Braden Scale Risk Score, Reason for ICU Admission, APACHE II Death Risk and Length of Stay in the ICU
Variable	Odds ratio (OR)	Confidence interval (95% CI)	P value
LOS: length of stay in the ICU.
Age	1.02	0.98 - 1.06	0.34
Braden scale risk score (per point increase)	0.84	0.61 - 1.14	0.26
Reason for ICU admission	0.22	0.03 - 1.79	0.16
APACHE II death risk (%)	1.05	1.01 - 1.09	0.008
LOS (days)	1.25	1.12 - 1.39	0.000