Question: what is the average blood pressure for a 15 year old?
Answer: The 90% fractile for boys was 139/80 mmHg and for and for girls 133/84 mmHg. In cases where repeated measurements show blood pressure readings over the 95% fractile, further investigation and advice about risk factors are recommended. The 95% fractile for boys was 144/84 mmHg and 138/88 mmHg for girls.