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Table 4 Multivariate conditional logistic regression analysis

From: Characterizing post-extubation negative pressure pulmonary edema in the operating room—a retrospective matched case-control study

Risk factors AOR 95% CI χ 2 P
Gender
 Male vs female 1.31 0.24–7.12 0.09 0.75
Age (years) 1.02 0.98–1.05 0.96 0.33
Smoking
 Yes vs no 7.68 1.67–35.36 6.85 0.009*
Type of anesthetics
 Des vs Sevo 0.73 0.17–3.14 0.18 0.67
Anesthesia technique
 ETGA vs LMA 10.87 1.23–100 4.60 0.03*
Duration of operation (min) 1.00 0.99–1.02 0.11 0.73
Intraoperative fluid (ml) 0.99 0.99–1.00 1.00 0.32
  1. Multivariate conditional logistic regression model was adopted to evaluate the association between the potential risk factors and the development of POPE. AOR adjusted odds ratio, CI confidence interval, Des desflurane, ETGA endotracheal general anesthesia, LMA laryngeal mask anesthesia, Sevo sevoflurane, χ2 chi-square analysis. Smoking was defined as actively smoking at least one cigarette a day within the preceding week of surgery. *P < 0.05 is considered as statistical significant