Skip to main content

Table 5 Risk of major in-hospital complication following primary TJR: multivariable logistic regressions using either HMD-recorded obesity (model 1) or actual body weight and height (model 2)

From: Use of routine hospital morbidity data together with weight and height of patients to predict in-hospital complications following total joint replacement

  Multivariable analysis Multivariable analysis
  Model 1 Model 2
  OR (95% CI) Pvalue OR (95% CI) Pvalue
Obesity as recorded in HMD 1.6 (0.9 - 2.9) 0.1 - -
Weight quintiles, kg - -   
1st quintile: < 73.2 (ref) 1.0  
2nd quintile: 73.3-79.6 1.2 (0.7 - 2.3) 0.5
3rd quintile: 79.7-84.4 1.7 (0.9 - 3.1) 0.1
4th quintile: 84.5-91.8 1.9 (1.0 - 3.4) 0.04
5th quintile: > 91.9 2.3 (1.2 - 4.4) 0.01
Area under ROC curve: 0.69   0.75  
  1. The models also controlled for age, Charlson Co-morbidity Index, socioeconomic status, height, type of replacement, fracture, years of smoking, presence of a minor complication, number of past hospitalizations, and private or public hospital.