This version was machine-translated from German and has not been medically reviewed. The authoritative version is the German version.

Down syndrome 0–36 months (Zemel 2015)

Weight, length, head circumference and weight-for-length

Child

Sex

male female

Gestational age at birth (optional, preterm infants)

Age

Birth and measurement date Age directly

Date of birth

Measurement date

Years

Months

Weeks

Days

Reference values: length (supine) from 30 days; head circumference from 30 days.

Use corrected age – for preterm infants the weeks until term are subtracted (up to an age of 24 months)

Measured values

Weight (kg)

Length (supine) (cm)

Head circumference (cm)

Decimal separator comma or period. Empty fields are skipped.

Reset Reference range: 0–36 months

About this calculator

Percentiles and z-score according to the US growth curves for children with Down syndrome (Zemel 2015), 0–36 months.

In preterm infants, if a gestational age is given, age is corrected up to month 24 of life for the missing weeks up to 40+0. The z-score (SDS) describes the deviation from the median in standard deviations; the percentile the proportion of the reference population with a smaller value.

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Reference and license

Down syndrome infant (Zemel 2015) – 0–36 months.
Zemel BS, Pipan M, Stallings VA, et al. Growth charts for children with Down syndrome in the United States. Pediatrics. 2015;136(5):e1204–e1211. License: publication (AAP); LMS from the supplement (PMC5451269). Source
Length and head circumference from 1 month, weight from birth.
Down syndrome weight-for-length (Zemel 2015) – 0–36 months.
Zemel BS, et al. Pediatrics. 2015;136(5):e1204–e1211. License: publication (AAP); LMS from the supplement (PMC5451269). Source
Boys 49–93 cm, girls 52–90 cm.

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Note

Calculation aid for healthcare professionals. Percentiles and z-scores describe the position of a measured value in the reference population; clinical assessment remains with the treating physician.

Review date of the German original: 2026-11-05 · Methodology

Frequently asked questions

Down syndrome 0–36 months (Zemel 2015): What does this calculator compute?

Percentiles and z-score according to the US growth curves for children with Down syndrome (Zemel 2015), 0–36 months.

Down syndrome 0–36 months (Zemel 2015): Which sources is this calculator based on?

Zemel BS, Pipan M, Stallings VA, et al. Growth charts for children with Down syndrome in the United States. Pediatrics. 2015;136(5):e1204–e1211.; Zemel BS, et al. Pediatrics. 2015;136(5):e1204–e1211.