Table 2 Hazard ratio for association between risk factors combined with NSVT and the main composite outcome of SCD and appropriate ICD interventions

NSVT + unexplained syncope

4/19

7/41

1.12 (0.33–3.84)

0.86

NSVT + family history of SCD

4/10

7/50

3.40 (0.99–11.66)

0.05

NSVT + LV wall thickness ≥ 30 mm

1/6

10/54

0.74 (0.10–5.82)

0.78

NSVT + abnormal BP response

1/8

8/40

0.58 (0.07–4.61)

0.60

NSVT + LGE on CMR

5/26

1/16

3.31 (0.38–38.56)

0.28

NSVT + IVPG ≥ 30 mmHg

9/26

2/34

6.31 (1.36–29.25)

0.02