Table 1 Classification for the diagnosis of hypertension based on the percentile distribution of age, sex, and height for children aged under 16 years as well as the classification for patients aged over 16 years.

From: Waist-to-height ratio and skipping breakfast are predictive factors for high blood pressure in adolescents

Category 0–15 years
SBP and/or DBP percentile
Older than 16 years
SBP and/or DBP values (mmHg)
Normal  < P90  < 130/85
Normal-elevated  ≥ P90 to < P95 130–139/85–89
GRADE 1 hypertension P95–P99 + 5 mmHg 140–159/90–99
GRADE 2 hypertension  > P99 + 5 mmHg 160–179/100–109
GRADE 3 hypertension    ≥ 180/ ≥ 110
Isolated systolic hypertension SBP ≥ P95 and DBP < P90  ≥ 140/ < 90
  1. P percentile.