Table 2.

Incidence rate of cognitive impairment per each age year (children with epilepsy and controls)

Age at onset of cognitive impairment	Cases						Controls
	Female (n = 1244)		Male (n = 1484)		Total (n = 2728)		Female (n = 68,009)		Male (n = 71,826)		Total (n = 139,835)
	Number of initial diagnoses	Incidence rate per 10,000 (95% CI)	Number of initial diagnoses	Incidence rate per 10,000 (95% CI)	Number of initial diagnoses	Incidence rate per 10,000 (95% CI)	Number of initial diagnoses	Incidence rate per 10,000 (95% CI)	Number of initial diagnoses	Incidence rate per 10,000 (95% CI)	Number of initial diagnoses	Incidence rate per 10,000 (95% CI)
< 1	4	322 (93, 856)	9	606 (300, 1168)	13	477 (270, 823)	34	50 (36, 70)	34	47 (34, 66)	68	49 (38, 62)
1	17	1367 (838, 2194)	25	1685 (1132, 2487)	42	1540 (1136, 2079)	55	81 (62, 105)	70	97 (77, 123)	125	89 (75, 107)
2	20	1608 (1028, 2486)	38	2561 (1862, 3504)	58	2126 (1644, 2743)	63	93 (72, 119)	69	96 (76, 122)	132	94 (80, 112)
3	21	1688 (1092, 2582)	19	1280 (808, 2004)	40	1466 (1074, 1995)	60	88 (68, 114)	94	131 (107, 160)	154	110 (94, 129)
4	24	1929 (1286, 2869)	28	1887 (1298, 2724)	52	1906 (1452, 2495)	94	138 (113, 169)	187	260 (226, 300)	281	201 (179, 226)
5	22	1768 (1156, 2678)	34	2291 (1634, 3194)	56	2053 (1580, 2660)	93	137 (112, 168)	210	292 (255, 335)	303	217 (194, 242)
6	16	1286 (776, 2096)	30	2022 (1409, 2882)	46	1686 (1262, 2246)	80	118 (94, 147)	166	231 (198, 269)	246	176 (155, 199)
7	28	2251 (1549, 3247)	31	2089 (1465, 2960)	59	2163 (1676, 2784)	73	107 (85, 135)	153	213 (182, 250)	226	162 (142, 184)
8	15	1206 (714, 1998)	27	1819 (1242, 2645)	42	1540 (1136, 2079)	92	135 (110, 166)	160	223 (191, 260)	252	180 (159, 204)
9	14	1125 (653, 1899)	22	1482 (969, 2247)	36	1320 (949, 1827)	92	135 (110, 166)	189	263 (228, 303)	281	201 (179, 226)
10	12	965 (533, 1698)	19	1280 (808, 2004)	31	1136 (796, 1614)	86	126 (102, 156)	155	216 (184, 253)	241	172 (152, 196)