Input:   Age   mo yr Height   cm in m Systolic BP   cmHg mmHg Diastolic BP   cmHg mmHg

Results:   Height Percentile     Systolic BP Percentile   Diastolic BP Percentile     Threshold for Stage II hypertension* (defined as 99th percentile plus 5 mmHg) SBP Threshold   DBP Threshold

 

Systolic BP Percentile Interpretation

 

Percentile < 90:	Normal Systolic Blood Pressure
Percentile >= 90 and < 95:	Prehypertensive Systolic Blood Pressure
Percentile >= 95:	Hypertensive Systolic Blood Pressure

 

Diastolic BP Percentile Interpretation

 

Percentile < 90:	Normal Diastolic Blood Pressure
Percentile >= 90 and < 95:	Prehypertensive Diastolic Blood Pressure
Percentile >= 95:	Hypertensive Diastolic Blood Pressure

Notes

• In this calculator, the subject's blood pressure percentiles are based on age and height percentile.
• Stage I hypertension is defined as either Systolic BP or Diastolic BP between the 95th percentile and the 99th percentile plus 5 mmHg.
• Stage II hypertension is defined as either Systolic BP or Diastolic BP greater than the 99th percentile plus 5 mmHg.
• Children and adolescents whose BP exceeds 120/80 mmHg are also considered prehypertensive.

References

1. National High Blood Pressure Education Program Working Group on High Blood Pressure in Children and Adolescents. The fourth report on the diagnosis, evaluation, and treatment of high blood pressure in children and adolescents. Pediatrics. 2004 Aug;114(2 Suppl 4th Report):555-76.
2. Percentile conversion from Z-Score is done by table look-up in the standard Normal Table. Percentiles are provided for Z Scores between -3.09 and 3.09. Values beyond these extremes return percentiles of 0.1 and 99.9 respectively.
3. Click for Normal Data Table
4. National health and nutrition survey (NHANES), CDC/National Center for Health Statistics. Click for LMS Parameters for Boys: Height for Age