. 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 1. Clinical characteristics of female LQTS patients who received the oral contraceptive questionnaire according to their response.

Clinical Characteristics	Responded	Did not Respond	p-value
Demographics:
Number of Patients, #	175	165
Genetics:
Genotyped Positive	130(87^*)	108(93 ^*)	0.09
LQT1	62(35)	55(33)	0.68
LQT2	66(38)	50(30)	0.15
LQT3	0(0)	1(1)	0.49
Family History (sudden cardiac death before age 40)	42(24)	40(24)	0.96
ECG:
QTc-interval value (msec)^†	492±45	498±61	0.95
Non-pharmacological Therapy:
Left cervico-thoracic sympathetic denervation (LCSD)	7(4)	3(2)	0.34
Pacemaker	23(13)	23(14)	0.83
Implantable Cardioverter Defibrillator (ICD)	54(31)	68(41)	0.05

Values are Mean ± SD where indicated. Numbers in parentheses are percent (%).

Percent of those who were tested (n=150)

^†

First measurements recorded in LQTS Registry.