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Table 3 Body mass index (BMI) classification of weights comparing the actual with the estimated weights

From: Estimation of weight in adults from height: a novel option for a quick bedside technique

BMI (kg/m2) Classification Actual weight (kg) Estimated weight
Frequency Percentage Frequency Percentage
< 18.5 Underweight 6 4.9
18.5–24.5 Normal 94 77.1 99 81.1
25.0–29.5 Overweight 22 18.0 23 18.9
30.0–34.5 Obesity class 1
35.0–39.5 Obesity class 2
≥ 40 Obesity class 3
Total   122 100.0 122 100.0
  1. Above shows a positive predictive value of 94.7% in eBW for normal weight and 95.5% positive predictive value for overweight while a negative predictive value of 100% for the obesity classes