nearly significantP =0.069
A FiO 2 greater than 0.21 within 24 hr prior to ligation was associated with an increased risk of composite morbidity on univariate analysis (OR of 2.150 per every 0.1 increase of FiO 2 with 95% CI of 0.941-4.914) with a nearly significant P value ( P =0.069).