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Table 1 Agreement between growth categories using Z-score and percentile cut-points for classification of BMI categories in children 0–5 years of age (n = 5836)

From: Misclassification of child body mass index from cut-points defined by rounded percentiles instead of Z-scores

Z-score cut-points Percentile cut-points
Wasted Normal Risk of overweight Overweight Obese
< 3rd 3rd to 85th > 85th to 97th > 97th to 99.9th > 99.9th
< − 2.0 212 (3.6%) 0 0 0 0
− 2.0 to 1.0 33 (0.6%) 4530 (77.6%) 0 0 0
> 1.0 to 2.0 0 37 (0.6%) 727 (12.5%) 39 (0.7%) 0
> 2.0 to 3.0 0 0 0 201 (3.4%) 0
> 3.0 0 0 0 8 (0.1%) 49 (0.8%)