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Table 3 The BMI subgroups that are independently associated with hospital mortality in each admission diagnosis group using BMI of 18.5 to 24.9 as reference

From: Underweight is independently associated with mortality in post-operative and non-operative patients admitted to the intensive care unit: a retrospective study

Admission diagnosis

BMI subgroup

Odds Ratio (95%CI)

P-value

Cardiovascular

< 18.5

2.84 (1.70–4.74)

< 0.001

Genitourinary

< 18.5

4.15 (1.21–14.25)

0.0236

Gastrointestinal

None

  

Hematology

None

  

Metabolism/endocrine

None

  

Musculoskeletal

< 18.5

3.70 (1.20–11.38)

0.0227

Neurology

30–39.9

2.74 (1.29–5.81)

0.0086

Respiratory

30–39.9

0.72 (0.56–0.94)

0.0138

Transplant

None

  

Trauma

None