Table 3.

Factors correlated with delayed gastric emptying in critical illness, derived from univariate analyses

	P value	r
Age	< 0.01	0.32
Admission APACHE II score	< 0.01	0.27
Fraction of inspiratory oxygen	0.02	0.27
Serum creatinine	0.04	0.17
Length of stay in ICU prior to the study	0.02	0.14

APACHE II, Acute Physiology and Chronic Health Evaluation II; ICU, intensive care unit.