TABLE 1.
Demographic and clinical characteristics for patients with seizures during enrollment (N = 94 patients, n = 548 seizuresa)
| Demographic and clinical characteristics | Value |
| Age at first enrollment, median years (range, IQR) | 9.9 (27.2, 9.2) |
| Male, n (%) | 54 (57.4) |
| Ethnicity, n (%) | |
| Not Hispanic or Latino | 71 (75.5) |
| Unknown | 9 (9.6) |
| Not reported | 8 (8.5) |
| Hispanic or Latino | 6 (6.4) |
| Race, n (%) | |
| White | 64 (68.1) |
| Unknown | 17 (18.1) |
| Black or African American | 6 (6.4) |
| Not reported | 6 (6.4) |
| Asian | 1 (1.1) |
| History of clinical epilepsy characteristics | |
| Diagnosis of epilepsy, n (%) | 92 (97.9) |
| Age at first seizure, median years (range, IQR) | 1.8 (16.0, 6.6) |
| Seizure frequency [n = 82], median seizures/30 days (range, IQR)b | 32.2 (2880.0, 119.2) |
| Epilepsy etiology [n = 92], n (%) | |
| Unknown | 39 (42.4) |
| Structural | 34 (37.0) |
| Genetic | 13 (14.1) |
| Infectious | 3 (3.3) |
| Metabolic | 2 (2.2) |
| Immune | 1 (1.1) |
| 2017 ILAE seizure semiology, n patients (n seizures)c | |
| Focal onset | 62 (548) |
| Focal to bilateral tonic–clonice | 21 (38) |
| Subclinicale | 14 (66) |
| Awareness and motor semiology unavailable | 6 (7) |
| Aware | 6 (9) |
| Motor | 4 (4) |
| Tonice | 2 (2) |
| Clonice | 1 (1) |
| Automatismse | 1 (1) |
| Nonmotor | 2 (5) |
| Sensory | 2 (5) |
| Impaired awareness | 28 (69) |
| Motor | 21 (49) |
| Automatismse | 10 (21) |
| Tonice | 7 (18) |
| Hyperkinetic | 4 (6) |
| Clonice | 4 (4) |
| Nonmotor | 10 (20) |
| Behavior arreste | 10 (16) |
| Cognitive | 1 (4) |
| Unclassified awareness | 22 (145) |
| Motor | 16 (78) |
| Tonice | 6 (47) |
| Automatismse | 3 (4) |
| Hyperkinetic | 3 (3) |
| Myoclonic | 3 (14) |
| Clonice | 2 (5) |
| Atonic | 1 (5) |
| Nonmotor | 5 (57) |
| Behavior arreste | 3 (5) |
| Autonomic | 1 (50) |
| Unclassified | 1 (1) |
| Sensory | 1 (1) |
| Unclassified movement | 5 (10) |
| Generalized onset | 35 (213) |
| Subclinical | 2 (2) |
| Motor semiology unavailable | 4 (5) |
| Motor | 30 (174) |
| Tonice | 15 (90) |
| Epileptic spasmse | 8 (47) |
| Tonic–clonice | 6 (15) |
| Myoclonic | 3 (9) |
| Clonic | 2 (7) |
| Atonic | 2 (5) |
| Unclassified | 1 (1) |
| Nonmotor | 2 (16) |
| Typical absence | 2 (16) |
| Unclassified movement | 6 (16) |
| Unknown onset/unclassified movement | 1 (1) |
| Wristband location, n patients c , d | |
| Left wrist | 35 |
| Right wrist | 40 |
| Left ankle | 94 |
| Right ankle | 59 |
Abbreviations: ILAE, International League Against Epilepsy; IQR, interquartile range.
a
In total, 930 seizures were captured when seizures from both left and right sensor devices are combined.
b
Median number of seizures in 30 days before first enrollment.
c
Patients may be represented in more than one category.
d
Wristband location may change over the course of an enrollment period.
e
Seizure type included in the seizure‐specific analysis.