A–Z Glossary

Percentile Crossing

Percentile crossing is movement across growth-chart percentile lines that may require evaluation when persistent or substantial.

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What percentiles mean for babies

What percentiles mean for babies

What a growth percentile actually represents A growth percentile places one measurement in relation to measurements from a reference group. For example, if a baby’s weight is at the 25th percentile, approximately 25 percent of comparable babies in the reference population weigh less, while approximately 75 percent weigh more. A baby at the 90th percentile […]