Table 4.

Retention rates of LCM treatment during follow-up in patients with and without IDD

Time period (months)	0	6	12	18	24	30	36
Patients at risk (on LCM), n
IDD −	90	70	46	34	22	17	3
IDD +	46	31	22	20	14	9	4
Discontinuation, n
IDD −	7	1	1	1	3	1	1
IDD +	12	2	0	0	1	1	0
Censored patients, n
IDD −	13	23	11	11	2	13	2
IDD +	3	7	2	6	4	4	4
Retention rate, %
IDD −	92	90	88	85	73	66	33
IDD +	73	68	68	68	62	53	53

Abbreviations: IDD, intellectual/developmental disorder; LCM, lacosamide.