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Table 1 Guidelines for the classification of overweight and obese adults using BMI

From: Fuzzy obesity index (MAFOI) for obesity evaluation and bariatric surgery indication

Condition

Classification

BMI

Overweight

OW

25 to 29.9

Obesity class I

OI

30 to 34.9

Obesity class II

OII

35 to 39.9

Obesity class III (Morbid)

OIII

≥40

  1. Clinical guidelines on the identification, evaluation, and treatment of overweight and obesity in adults. Washington, National Institute of Health, 1998. (Modified).
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