BMI percentiles are used in pediatric growth assessment to evaluate growth when?

• A. BMI percentiles never used
• B. BMI percentiles used only in adolescence
• C. BMI percentiles used when appropriate
• D. BMI percentiles replace height and weight

Answer: (C)

BMI percentile helps you gauge a child’s body mass relative to their height for their age, which is especially useful for identifying overweight, obesity, or underweight risk in a way that adjusts for growth. This tool is appropriate for children who are old enough for BMI interpretation—typically starting around age 2—so it’s used as part of growth assessment when it’s suitable for that child. It complements height-for-age and weight-for-age measures, rather than replacing them. Infants and very young toddlers require other growth measures (like weight-for-length), so BMI percentiles aren’t used there. In adolescence, BMI remains helpful, but it’s still used only when appropriate for the individual child’s growth pattern and clinical context.