Table 6.

Multivariate model by logistic regression of dichotomy risk factors of long QT syndrome

Variable	Adjusted OR (95% CI) for LQTS	p value
> 1 QT-prolonging drug user	0.94 (0.43–2.08)	0.885
> 2 QT-prolonging drug users	1.60 (0.78–3.30)	0.200
Chronic QT-prolonging drugs users	2.35 (1.11–4.95)	0.025
Male sex	2.83 (1.55–5.19)	0.001
Hypocalcemia	2.17 (1.13–4.18)	0.020
Hypothyroidism	3.74 (1.25–11.22)	0.019
Dilated cardiomyopathy/heart failure	3.65 (1.58–8.46)	0.003

CI confidence interval, LQTS long QT syndrome, OR odds ratio