Table II.
Frequency of Systolic Blood Pressure ≥95th Percentile at the First and Third Screenings by Quartiles of BMI
| BMI Quartiles | P Valuea | |||||
|---|---|---|---|---|---|---|
| <25th | 25th–49th | 50th–74th | ≥75th | |||
| First BP screening | ||||||
| All patients | SBP ≥95% | 6.4 | 6.8 | 12.5 | 21.5 | <.001 |
| Boys | SBP ≥95% | 9.5 | 6.9 | 17.9 | 17.3 | .013 |
| Girls | SBP ≥95% | 3.4 | 6.6 | 6.8 | 25.5 | <.001 |
| Third BP screening | ||||||
| All patients | SBP ≥95% | 0.6 | 2.4 | 2.6 | 5.4 | .003 |
| Boys | SBP ≥95% | 1.2 | 3.0 | 3.6 | 3.8 | .26 |
| Girls | SBP ≥95% | 0 | 1.9 | 1.5 | 6.8 | .003 |
Values are expressed as percentages. Abbreviations: BMI, body mass index; SBP, systolic blood pressure. aSomers’ d for ordinal variables.