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Table 1 WHO international classification of adult overweight and obesity according to body mass index (BMI)[5]

From: Designing intelligent anesthesia for a changing patient demographic: a consensus statement to provide guidance for specialist and non-specialist anesthetists written by members of and endorsed by the Society for Obesity and Bariatric Anaesthesia (SOBA)

Classification

BMI (kg/m2)

Normal range

18.5–25

Overweight

≥25

 Pre-obese

25–30

Obese

≥30

 Obese class I

30–35

 Obese class II

35–40

 Obese class III (morbidly obese)

≥40