Table 3.

Bivariate analysis in relation to the onset of PUs and multivariate logistic regression adjusting for age, sex, BMI, and total number of hours in PP.

	No PUs	Yes PUs	P	OR (95% CI)	P
	N: 108	N: 139
Total hours PP Median (IQR)	34.5 (24.0−48.0)	66.0 (31.0−146.0)	<.001*	1.013 (1.006−1.020)	<.001*
Postural changes n (%)
Every 6 h	31 (29.0%)	94 (68.1%)	<.001*	.369 (.157–.715)	.003*
Every 4 h	76 (71.0%)	44 (31.9%)
Initiation of EN n (%)
<48 h	99 (91.7%)	132 (95.7%)	.195	.369 (.157–2.036)	.383
>48 h	9 (8.3%)	6 (4.3%)
Type of nutrition n (%)
EN	99 (92.5%)	100 (74.6%)	<.001*	4.001 (1.521–10.525)	.005*
Mixed	8 (7.5%)	34 (25.4%)
Protein supplements n (%)
No	81 (75.0%)	114 (82.6%)	.144	.900 (.418–1.938)	.788
Yes	27 (25.0%)	24 (17.4%)

Quantitative variables expressed as median and interquartile range (IQR), categorical variables as absolute and relative frequencies: n (%). Multivariate binary logistic regression analysis expressed as odds ratio (OR) and confidence interval (95% CI%).

^*P-values <.005 were considered significant.