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Table 3 Multicollinearity test of risk factors of PPCs

From: Accumulative occlusion time correlates with postoperative pulmonary complications in patients undergoing pelvic and sacrum tumor resection assisted by abdominal aortic balloon occlusion: a retrospective cohort study

Risk factorsVIFTolerance
Age (y)1.160.859
ASA grade1.160.861
Preoperative albumin (g/L)1.060.946
Duration of surgery (h)1.930.518
Estimated blood loss (L)1.850.542
Accumulative occlusion time (min)1.570.637
  1. Abbreviation: PPCs postoperative pulmonary complications, ASA American Society of Anesthesiologists, VIF variance inflation factor