Growth Centile Assessment for 6-Year-Old Boy
This 6-year-old boy with weight 24.3 kg and height 121.5 cm falls approximately at the 75th percentile for weight and 75th-90th percentile for height on UK WHO growth charts, indicating normal, healthy growth.
Growth Chart Standards for This Age Group
For children aged 6 years, CDC growth charts (which the UK uses alongside WHO standards for children over 2 years) are the appropriate reference, as WHO growth standards are primarily used for children under 24 months, with CDC charts recommended for children aged 24 months to 19 years 1, 2.
The UK has adopted WHO growth standards but transitions to CDC-based references for older children, with the change from recumbent length to standing height measurements occurring at age 2 years 1.
Specific Centile Interpretation
Weight of 24.3 kg at age 6 years places this child well above the median (50th percentile is approximately 20-21 kg for 6-year-old boys), indicating robust weight gain 1.
Height of 121.5 cm at age 6 years is above the 75th percentile (50th percentile is approximately 115-116 cm for 6-year-old boys), demonstrating excellent linear growth 1.
Both measurements fall well within the normal range (between 3rd and 97th percentiles), with no concerns for growth faltering or excessive growth 1, 3.
Clinical Significance
Values between the 3rd and 97th percentiles are considered normal, with values below the 2nd percentile (2.3rd percentile) warranting evaluation for adverse health conditions 1, 3.
This child's measurements indicate no need for further evaluation, as both weight and height are tracking in healthy percentile ranges well above thresholds that would suggest malnutrition, chronic disease, or growth disorders 1, 3.
Serial measurements every 3-6 months remain important to ensure the child maintains a parallel trajectory along their percentile curve rather than crossing percentile lines 1, 3.