Skip to main content

Table 3 Formulas of the four models

From: Can we rely on the combination of serological tests and frozen sections at the time of reimplantation for two-stage exchange hip arthroplasty in patients with a “dry tap”?

Model Formula
Diagnosis of persistent infection according to modified MSIS
Model 1 − 2.99131 + 0.03227*ESR − 0.07385*CRP + 1.35106* (if frozen section > 5 PMNs per PHF is 1 or is 0)
Model 2 − 2.88829 + 0.03898*ESR − 0.15854*CRP + 1.81932* (if frozen section > 10 PMNs per PHF is 1 or is 0)
Diagnosis of persistent infection according to the Delphi failure (sensitivity analysis)
Model 3 − 2.20782 + 0.01501*ESR − 0.60821*CRP + 1.08219*(if frozen section > 5 PMNs per PHF is 1 or is 0)
Model 4 − 2.02084 + 0.01980*ESR − 0.68791*CRP + 1.27583* (if frozen section > 10 PMNs per PHF is 1 or is 0)
  1. * means multiplication