Sex | Male | 77 (55.8) | 73 (57.5) | 150 (56.6) | 0.782 |
| Female | 61 (44.2) | 54 (42.5) | 115 (43.4) | |
F/Hx of FS (missing data 7) | (+) | 31 (23.1) | 64 (51.6) | 95 (36.8) | <0.001 |
| (-) | 103 (76.9) | 60 (48.4) | 163 (63.2) | |
Day care | (+) | 74 (53.6) | 112 (88.2) | 186 (70.2) | <0.001 |
| (-) | 64 (46.4) | 15 (11.8) | 79 (29.8) | |
Age of 1st event (n=190) | <12 mo | 16 (11.6) | 8 (15.4) | 24 (12.6) | 0.483 |
| ≥12 mo | 122 (88.4) | 44 (84.6) | 166 (87.4) | |
Temperature (missing data 3) | <39°c | 35 (25.7) | 31 (24.6) | 66 (25.2) | 0.833 |
| ≥39°c | 101 (74.3) | 95 (75.4) | 196 (74.8) | |
Duration of fever (missing data 1) | <24 hr | 75 (54.7) | 89 (70.1) | 164 (62.1) | 0.010 |
| ≥24 hr | 62 (45.3) | 38 (29.9) | 100 (37.9) | |
Duration of seizure (missing data 1) | <15 min | 128 (93.4) | 123 (96.9) | 251 (95.1) | 0.199 |
| ≥15 min | 9 (6.6) | 4 (3.1) | 13 (4.9) | |
Upper respiratory infection | (+) | 90 (65.2) | 100 (78.7) | 190 (71.7) | 0.015 |
| (-) | 48 (34.8) | 27 (21.3) | 75 (28.3) | |
Hyponatremia (missing data 5) | <135 mEq/L | 10 (7.5) | 2 (1.6) | 12 (4.6) | 0.024 |
| ≥135 mEq/L | 124 (92.5) | 124 (98.4) | 248 (95.4) | |
CRP (missing data 5) | <0.3 mg/dL | 40 (29.9) | 34 (27.0) | 74 (28.5) | 0.680 |
| ≥0.3 mg/dL | 94 (70.1) | 92 (73.0) | 186 (71.5) | |
Leukocytosis (missing data 6) | <15,000/μL | 105 (78.9) | 105 (83.3) | 210 (81.1) | 0.428 |
| ≥15,000/μL | 28 (21.1) | 21 (16.7) | 49 (18.9) | |
Neutrophilia (missing data 6) | <70% | 100 (75.2) | 96 (76.2) | 196 (75.7) | 0.886 |
| ≥70% | 33 (24.8) | 30 (23.8) | 63 (24.3) | |