Table 5 Crude and adjusted associations for age/10, sex, CCI and FCI with the number of adverse events (excluding pain) across all procedures (Panel A) and for only THA and TKA procedures (Panel B) using negative binomial regression modeling
From: A retrospective cohort study of adverse events in patients undergoing orthopaedic surgery
Predictors | Incidence Rate Ratio | 95% CI | p-value |
|---|---|---|---|
A. All Procedures (N = 1192) | |||
 Crude Associations | |||
  Age (decade) | 1.00 | 0.95–1.06 | 0.87 |
  Sex (male coded as 1) | 0.99 | 0.81–1.21 | 0.91 |
  CCI score (per 1 point) | 1.20 | 1.11–1.31 | <0.001 |
  FCI score (per 1 point) | 1.34 | 1.23–1.45 | <0.001 |
 Adjusted Models | |||
  Model 1 | |||
  Age (decade) | 1.00 | 0.95–1.06 | 0.92 |
  Sex | 0.99 | 0.81–1.21 | 0.95 |
  CCI score (per 1 point) | 1.20 | 1.11–1.31 | <0.001 |
  Model 2 | |||
  Age (decade) | 0.99 | 0.94–1.04 | 0.67 |
  Sex | 0.99 | 0.81–1.22 | 0.97 |
  FCI score (per 1 point) | 1.34 | 1.23–1.46 | <0.001 |
B. THA and TKA Procedures Only (N = 413) | |||
 Crude Associations | |||
  Age (decade) | 1.16 | 1.01–1.33 | 0.03 |
  Sex | 1.15 | 0.82–1.62 | 0.41 |
  CCI score (per 1 point) | 1.20 | 1.04–1.39 | 0.02 |
  FCI score (per 1 point) | 1.24 | 1.09–1.41 | 0.001 |
 Adjusted Models | |||
  Model 1 | |||
  Age (decade) | 1.15 | 1.00–1.32 | 0.04 |
  Sex | 1.13 | 0.80–1.60 | 0.47 |
  CCI score (per 1 point) | 1.18 | 1.02–1.37 | 0.03 |
  Model 2 | |||
  Age (decade) | 1.12 | 0.99–1.29 | 0.08 |
  Sex | 1.16 | 0.82–1.64 | 0.40 |
  FCI score (per 1 point) | 1.22 | 1.07–1.39 | <0.001 |