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Table 4 Univariate and multivariate Cox regression models predicting prolonged extubation time

From: Longer time to extubation after general anesthesia with desflurane in patients with obstructive respiratory dysfunction: a retrospective study

 

Univariate

Multivariate

OR (95% CI)

P value

OR (95% CI)

P value

Sex, male vs female

2.00 (1.12–3.57)

0.020*

1.96 (1.09–3.53)

0.024*

Age ≥ 75 yr

1.28 (0.72–2.27)

0.404

  

BMI ≥ 25 kg/m2

0.87 (0.48–1.56)

0.641

  

ASA, III vs I, II

1.68 (0.80–3.52)

0.172

  

Current smoker vs ex-smoker, nonsmoker

1.00 (0.39–2.54)

0.998

  

Operation time ≥ 100 min

0.97 (0.55–1.73)

0.925

  

Anesthesia time ≥ 160 min

1.52 (0.84–2.75)

0.162

  

Fentanyl ≥ 250 μg

1.03 (0.58–1.83)

0.925

  

Maintenance concentration of DES ≥ 4.5 %

1.16 (0.65–2.10)

0.614

  

Age-adjusted MAC fraction ≥ 1.0

1.04 (0.52–2.07)

0.907

  

Obstructive respiratory impairment, yes vs no

2.07 (1.05–4.08)

0.036*

2.02 (1.02–4.02)

0.045*

  1. OR odds ratio, CI confidence interval, BMI body mass index, ASA American Society of Anesthesiologists, DES, desflurane, MAC minimum alveolar concentration
  2. *P < 0.05