. Author manuscript; available in PMC: 2015 Jul 1.

Published in final edited form as: Heart Rhythm. 2014 Apr 13;11(7):1170–1175. doi: 10.1016/j.hrthm.2014.04.016

Table 3. Adjusted hazard ratio^* for recurrent cardiac events^† in LQTS females comparing oral contraceptive use to no oral contraceptive use during follow-up.

Parameter	Hazard ratio	(95% CI)	p-value
Time-dependent oral contraceptive use	1.01	0.71– 1.44	0.95
Time-dependent β-blockers use	0.36	0.24-0.54	<0.0001

Abbreviations: CI denotes confidence interval

Adjusted for time-dependent β-blockers use, cardiac events prior to menarche, QTc interval, age at menarche, number of births, LQTS genotypes. See Methods for details.

^†

Total recurrent cardiac events, in the 174 patients studied, including syncope or aborted cardiac arrest = 268.

Table 3. Adjusted hazard ratio* for recurrent cardiac events† in LQTS females comparing oral contraceptive use to no oral contraceptive use during follow-up.

Table 3. Adjusted hazard ratio^* for recurrent cardiac events^† in LQTS females comparing oral contraceptive use to no oral contraceptive use during follow-up.