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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%)