Univariate and logistic regression analysis of factors associated with hypoxemia or hypotension in patients under BIS-guided propofol sedation.

Abbreviations: OR, odds ratio; CI, confidence interval; ASA, American Society of Anesthesiologists. *Patient, procedure, sedative factors were analyzed by univariate Student's t-test and chi-square tests where appropriate. †Oxyhemoglobin saturation <90% for any duration. ‡Mean arterial pressure <60 mm Hg or systolic blood pressure <90 mm Hg for any duration. ¶Factors significant in the univariant analysis were analyzed and adjusted together by the multivariate logistic modeling.