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Table 4 Rates of major in-hospital complications by HMD-recorded obesity and body mass index based on actual weight and height of patients by Charlson Co-morbidity Index categories

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

Charlson Co-morbidity Index categories

Diagnosis of obesity as recorded in HMD1

Body mass index calculated from weight and height measured by nurses from HIMS survey2

No obesity diagnosis N=793

With obesity diagnosis N=64

BMI 18.5-24.9 N=153

BMI 25-29.9 N=488

BMI > 30 N=216

0

n=384

14%

33%

17%

13%

17%

1-2

n=323

23%

32%

10%

28%!

25%!

> 3

n=150

25%

33%

6%

33%!

31%!

All

n=857

19%

34%!

12%

22%!

23%!

  1. ! 0.001<p<0.05.
  2. 1 Patients with an obesity diagnosis in HMD were compared with those who had no such diagnosis in HMD.
  3. 2 Patients with BMI 25-29.9 or BMI > 30 were compared with those with BMI 18.5-24.9.