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    • Examination Protocols - Infant Weight for Length Percentiles (< 36 months)

    CDC/NCHS Infant Weight for Length Percentiles (< 36 months)

    Input:
    Sex Female

    		 Male
    Length
    Weight
    Results:
    Z Score  
    Percentile  
     
    Decimal Precision:
    Weight for Length Percentile Interpretation
    Percentile < 5:Underweight
    Percentile >= 5 and < 95:Healthy weight
    Percentile >= 95:Overweight
    • This calculator uses measured recumbent Length for infants and toddlers from birth through 36 months of age.
    • It is not valid for standing height.
    • At the extremes (> 97th percentile or < 3rd percentile), small differences in percentiles represent clinically important differences in weight/height. At these extremes, the z-score is a more precise reflection of how far the measurement deviates from the mean, and is a useful tool for tracking changes.
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