Table 2.

Analysis of epilepsy in relation to time of long QT syndrome (LQTS) diagnosis (index)

	LQTS		Controls		P value	Flow chart of LQTS patients with epilepsy
	N	%	N	%
Anytime;Epilepsy	31	6.7	37	1.6	<0.001
Anytime;Antiepileptics	20	4.3	23	1.0	<0.001
Preindex; Epilepsy	27	5.8	24	1.0	<0.001
Preindex; Antiepileptics	17	3.7	21	0.9	<0.001
Dismissed†; Epilepsy	20	4.3	23	1.0	<0.001
Dismissed; Antiepileptics	4	0.9	7	0.3	0.079
Acquired*; Epilepsy	4	0.9	13	0.6	0.446
Acquired; Antiepileptics	3	0.6	3	0.1	0.028
Postindex; Epilepsy	11	2.4	14	0.6	<0.001
Postindex; Antiepileptics	16	3.5	17	0.7	<0.001

*Dismissed: only before index, not after.

†Acquired: not before index, only after.