Table III. Risk factors for developing complex FS compared with simple FS.

Factor	Complex FS N (%)	Simple FS N (%)	Univariate OR (95% CI)
Age
<18 mo	27 (60.0%)	40 (39.2%)	2.3 (1.1,4.8)
≥18 mo	18 (40.0%)	62 (60.8%)	1.0 (Referent)
Daycare attendance
Daycare	3 (6.8%)	15 (15.3%)	0.4 (0.1,1.5)
No daycare	41 (93.2%)	83 (84.7%)	1.0 (Referent)
Drinking during pregnancy
At least 1 drink in pregnancy	0 (0%)	1 (1.0%)	NA
No drink in pregnancy	45 (100.0%)	97 (99.0%)	1.0 (Referent)
First-degree family history of FS
Positive family history	9 (20.0%)	20 (20.2%)	1.0 (0.4, 2.4)
No family history	36 (80.0%)	79 (79.8%)	1.0 (Referent)
First-degree family history of epilepsy
Positive family history	1 (2.2%)	8 (8.1%)	0.3 (0.0, 2.1)
No family history	44 (97.8%)	91 (91.9%)	1.0 (Referent)
Sex
Female	22 (48.9%)	43 (42.2%)	1.3 (0.6, 2.7)
Male	23 (51.1%)	59 (57.8%)	1.0 (Referent)
Premature birth
≤ 37 wk	8 (17.8%)	15 (15.5%)	1.2 (0.5, 3.0)
>37 wk	37 (82.2%)	82 (84.5%)	1.0 (Referent)
Smoking during pregnancy
No	38 (84.4%)	94 (94.0%)	1.0 (Referent)
Yes	7 (15.6%)	6 (6.0%)	2.9 (0.9, 9.1)
Any temporal lobe abnormality   other than increased T2 signal
Abnormal	2 (5.1%)	1 (1.0%)	5.1 (0.5, 58.3)
No abnormality	37 (94.9%)	95 (99.0%)	1.0 (Referent)
Any structural abnormality on MRI
Abnormal	16 (41.0%)	34 (35.4%)	1.3 (0.6, 2.7)
No abnormality	23 (59.0%)	62 (64.6%)	1.0 (Referent)
Temperature
<104.0°F	27 (60.0%)	57 (55.9%)	1.2 (0.6, 2.4)
≥ 104.0°F	18 (40.0%)	45 (44.1%)	1.0 (Referent)
Time temperature was   recognized before seizure
1-24 h	21 (46.7%)	53 (53.0%)	0.7 (0.3,1.7)
<1 h	13 (28.9%)	24 (24.0%)	1.0 (Referent)
>24 h	11 (24.4%)	23 (23.0%)	0.9 (0.3, 2.4)