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Table 1 Comparison of baseline characteristics in responders and nonresponders

From: Orthostatic plasma norepinephrine level as a predictor for therapeutic response to metoprolol in children with postural tachycardia syndrome

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

  1. *Two out of 27 cases lost during follow-up.