Table 2.

Multifactorial analysis of unplanned reintubation.

Variable	B	SE	Wald χ2	P	OR	95% CI
Age (yr)	1.136	0.531	4.523	.021	3.215	1.063–6.215
Propofol dosage	1.314	0.121	4.712	.124	0.762	0.582–4.312
Operation time	1.185	0.382	5.231	.002	3.612	1.502–6.485
Cognitive dysfunction	1.043	0.563	4.162	.033	3.417	1.015–7.513

CI = confidence interval, OR = odds ratio, SE = standard error of the mean.