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Table 3 Multivariate logistic regression analysis for exploring the risk factors of ICU admission

From: Bupivacaine–fentanyl isobaric spinal anesthesia reduces the risk of ICU admission in elderly patients undergoing lower limb orthopedic surgery

 

Odds ratio

95% CI

P value

Spinal vs. General anesthesia

0.240

0.115–0.498

 < 0.01

Age ≥ 80 years vs. < 80 years

7.219

3.814–13.664

 < 0.01

Operation time ≥ 1.5 h vs. < 1.5 h

8.346

4.283–16.264

 < 0.01

Preoperative diabetes

3.027

1.420–6.451

 < 0.01