Table 1.
Demographic and Blood Pressure Variability Data
| Demographic Data | Overall | Primary HTN | Secondary HTN | P Value |
|---|---|---|---|---|
| No. (%) | 74 | 40 (54) | 34 (46) | |
| Age, y | 13.3±3.8 | 13.6±3.6 | 12.9±4.0 | .46 |
| Men, No. (%) | 55 (74) | 32 (80) | 23 (68) | .15 |
| Height, cm | 159.3±19.9 | 164.1±17.6 | 153.1±21.1 | .02 |
| Weight, kg | 65.2±28.9 | 70.7±29.5 | 58.8±27.2 | .08 |
| BMI z score | 1.1±1.2 | 1.2±1.2 | 1.0±1.3 | .58 |
| LVMI, g/m2.7 | 36.7±9.1 | 35.4±10.0 | 38.2±7.9 | .20 |
| LVH, No. (%) | 23 (31) | 11 (28) | 12 (35) | .41 |
| Antihypertensive medications, No. (%) | 16 (22) | 2 (5) | 14 (41) | <.001 |
| Overall systolic, mm Hg | ||||
| ARV | 8.7±1.9 | 8.9±1.7 | 8.4±2.2 | .19 |
| SD | 7.4±2.0 | 7.7±2.2 | 7.0±1.9 | .22 |
| Range | 46.2±14.9 | 49.9±13.0 | 44.6±12.3 | .43 |
| Overall diastolic, mm Hg | ||||
| ARV | 9.1±2.4 | 9.4±2.5 | 8.8±2.2 | .29 |
| SD | 7.8±2.0 | 8.0±2.2 | 7.4±1.8 | .17 |
| Range | 47.7±14.8 | 49.7±16.4 | 45.2±12.4 | .2 |
| Wake period systolic, mm Hg | ||||
| ARV | 8.6±2.2 | 8.9±2.0 | 8.3±2.3 | .29 |
| SD | 7.5±2.7 | 7.5±2.3 | 7.5±3 | .9 |
| Range | 41.9±14.4 | 43.5±16 | 40.0±12.0 | .31 |
| Wake period diastolic, mm Hg | ||||
| ARV | 9.2±2.7 | 9.7±3.1 | 8.7±2.0 | .15 |
| SD | 7.8±2.1 | 8.1±2.3 | 7.4±1.7 | .19 |
| Range | 44.2±14.9 | 46.2±17.2 | 41.6±11.0 | .19 |
| Sleep period systolic, mm Hg | ||||
| ARV | 9.5±3.9 | 10.3±4.3 | 8.4±3.1 | .04 |
| SD | 7.0±3.2 | 7.5±3.7 | 6.5±2.4 | .21 |
| Range | 31.1±13.9 | 31.5±14.1 | 30.5±13.8 | .77 |
| Sleep period diastolic, mm Hg | ||||
| ARV | 9.2±3.7 | 9.0±3.5 | 9.5±3.9 | .64 |
| SD | 7.1±3.0 | 6.8±2.7 | 7.4±3.3 | .39 |
| Range | 32.1±17.7 | 29.2±14.0 | 35.9±21.1 | .12 |
Abbreviations: ARV, average real variability; BMI, body mass index; HTN, hypertension; LVH, left ventricular hypertrophy; LVMI, left ventricular mass index; SD, standard deviation. Bold values indicate significance.