What centile would a 15-year-old girl with a weight (WT) of 70 kg and a height (HT) of 170 cm fall into on the UK WHO growth chart?

Centile Assessment for a 15-Year-Old Girl with Weight 70 kg and Height 170 cm on UK WHO Growth Charts

Based on the UK WHO growth charts, a 15-year-old girl with a weight of 70 kg and height of 170 cm would fall approximately between the 75th and 91st centiles for both measurements.

Height Assessment

• A height of 170 cm for a 15-year-old girl is above the 50th centile and likely around the 75th-91st centile on UK WHO growth charts 1
• This height indicates normal to above-average stature for age, suggesting appropriate linear growth 2
• The height measurement falls within the healthy range for a 15-year-old female, indicating no concerns regarding linear growth 3

Weight Assessment

• A weight of 70 kg for a 15-year-old girl with height of 170 cm is proportional and likely falls between the 75th and 91st centiles 2
• This weight is appropriate for her height, indicating a balanced growth pattern without evidence of underweight or significant overweight status 3
• The weight falls within the expected range for a girl of this age and height according to UK WHO growth standards 4

BMI Assessment

• Calculating BMI: 70 kg ÷ (1.70 m)² = 24.2 kg/m², which falls within the normal range (between 18.5-24.99 kg/m²) for her age 5
• This BMI indicates appropriate weight-for-height ratio without evidence of underweight or overweight status 4
• A BMI of 24.2 kg/m² for a 15-year-old girl is likely around the 75th centile, suggesting proportional growth 6

Clinical Interpretation

• The combination of height and weight both falling between the 75th and 91st centiles suggests a healthy, proportional growth pattern 3
• When both height and weight follow similar centile patterns, this generally indicates balanced growth without nutritional concerns 7
• The UK WHO growth charts use the LMS method (Lambda-Mu-Sigma) to accommodate skewed distributions in anthropometric measurements, providing accurate centile positioning 6
• Growth charts typically display the 0.4th, 2nd, 9th, 25th, 50th, 75th, 91st, 98th, and 99.6th centiles, allowing for precise assessment of growth status 1

Monitoring Considerations

• Growth velocity is as important as absolute measurements; serial measurements over time provide more valuable information about growth patterns than single measurements 3
• Parental heights should be considered when interpreting growth charts to account for genetic potential 8
• Regular monitoring of growth parameters is essential to track changes in BMI and height over time, especially during adolescence when growth patterns can change rapidly 4