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Table 1 Descriptive statistics of VASIS categories according to age

From: PR interval as a predictor of syncope in tilt-up testing in adolescents and young adults

VASIS

Age groups (years)

Total

12–15

n = 53

16–18

n = 54

19–30

n = 35

12–30

n = 142

I

29 (54.72%)

23 (42.59%)

15 (42.85%)

67 (47.18%)

IIa

7 (13.21%)

1 (1.85%)

2 (5.71%)

10 (7.04%)

IIb

5 (9.43%)

7 (12.96%)

4 (11.43%)

16 (11.27%)

III

12 (22.64%)

23 (42.59%)

14 (40.00%)

49 (34.51%)