Early Pulmonary Complications following Total Knee Arthroplasty under General Anesthesia: A Prospective Cohort Study Using CT Scan

Table 3

Multivariate logistic regression analysis to identify independent risk factors for PPC.

	OR	95% CI	value
BMI	0.879	0.776–0.995	0.042
Smoking	5.986	0.637–56.290	0.118
Operation time	1.023	0.999–1.047	0.057
Blood transfusion	2.616	1.134–6.038	0.024

⁢ was considered statistically significant.
OR, odds ratio; CI, confidence interval; BMI, body mass index.