Table 1.
Comparison of baseline characteristics in responders and nonresponders
| Characteristics | Responders | Nonresponders | P value |
|---|---|---|---|
| Cases (n = 25)* | 13 | 12 | |
| Age, years | 12 ± 2 | 11 ± 3 | 0.655 |
| BMI, kg/m2* | 19.7 ± 4.9 | 17.2 ± 2.5 | 0.130 |
| Females/males, n | 7/6 | 6/6 | 0.716 |
| Symptoms score before treatment | 7.4 ± 1.9 | 7.2 ± 2.7 | 0.820 |
| Supine systolic BP, mmHg | 101.9 ± 9.3 | 98.0 ± 8.6 | 0.286 |
| Supine diastolic BP, mmHg | 58.0 ± 9.7 | 55.1 ± 8.1 | 0.426 |
| Supine hear rate, beats/min | 74.0 ± 9.4 | 75.6 ± 9.8 | 0.683 |
| Orthostatic plasma norepinephrine level, pmol/ml | 5.10 ± 2.69 | 2.93 ± 1.79 | 0.028 |
*Two out of 27 cases lost during follow-up.