TABLE 1

Interrater Reliability for Findings on General and Seizure-Specific History

CriterionNo. of Evaluable PatientsaNo. of Patients for Whom at Least 1 Assessor Marked “Unsure,” “Don't Know,” or “Unable to Assess”Characteristic Present per First Assessor, n/N (%)κ (95% CI)Percent Overall Agreement
General history
    High-risk medical historyb20103/201 (1.5)0.80 (0.41 to 1.0)99.5
    Exposure to cysticercosis180284/180 (2.2)Unable to calculate98.3
    Headache today, before seizurec115818/115 (15.7)0.55 (0.36 to 0.75)86.1
        No headache or headache not rapid onset vs headache of rapid onsetc109155/109 (4.6)0.47 (0.11 to 0.83)94.5
        No headache or headache not rapid onset, first or worst vs headache rapid onset, first or worstc11487/114 (6.1)0.26 (−0.024 to 0.54)88.6
    History of headachesc119519/119 (16.0)0.54 (0.33 to 0.76)89.1
        No headaches or headaches neither in morning nor more frequent vs previous headaches either in morning or more frequentc11772/117 (1.7)−0.028 (−0.06 to 0.004)91.5
    History of nausea or vomiting205429/205 (14.1)0.53 (0.37 to 0.69)87.8
    Behavior change (sleeping more, less active, more emotional/irritable, unusual conduct/behavior)210026/210 (12.4)0.38 (0.20 to 0.56)85.7
    Speech changec12151/121 (0.8)0.66 (0.04 to 1.0)99.1
    Dizzy, falling, or uncoordinatedc119313/119 (10.9)0.44 (0.18 to 0.71)89.9
    Vision changec (acuity, double/blurred vision, other)11435/114 (4.4)0.14 (−0.18 to 0.46)92.1
Seizure-specific history
    >1 seizure in 24 h201747/201 (23.4)0.83 (0.73 to 0.92)94.0
    Longest seizure in past 24 h
        ≥5 min1702936/170 (21.2)d0.80 (0.69 to 0.91)92.9
        ≥15 min1702915/170 (8.8)d0.78 (0.62 to 0.94)95.8
    Any focal aspect to seizuree1812962/181 (34.3)0.58 (0.45 to 0.71)81.2
        Motor aspect 1-sided at any point1564025/156 (16.0)0.67 (0.52 to 0.84)90.4
        Head turned to 1 side at any point1496026/149 (17.4)0.69 (0.54 to 0.85)91.3
        Eyes turned to 1 side at any point1387034/138 (24.6)0.46 (0.28 to 0.63)80.5
    Postictal phase ≥60 min1604233/160 (20.6)f0.59 (0.43 to 0.75)88.1
  • a Excludes patients for whom data point from at least 1 assessor was missing or marked as “unsure,” “don't know,” or “unable to assess.”

  • b Defined as having a history of a brain tumor, other neoplasm, stroke, coagulopathy, sickle cell disease, anatomical cardiac defect, or presence of an intracranial ventricular shunt.

  • c A total of 82 patients younger than 24 months were not included in the analysis.

  • d Truncated from the following: 23 (13.5%) had seizure duration of <15 seconds, 36 (21.2%) were 15 seconds to <1 minute, 75 (44.1%) were 1 to <5 minutes, 21 (12.4%) were 5 minutes to <15 minutes, and 15 (8.8%) were ≥15 minutes.

  • e Defined as motor aspect 1-sided or head or eyes turned to 1 side at any point.

  • f Truncated from the following: 38 (23.8%) with no postictal phase, 4 (2.5%) with postictal phase of <1 minute, 20 (12.5%) were 1 to <5 minutes, 50 (31.2%) were 5 minutes to <30 minutes, 15 (9.4%) were 30 to <60 minutes, and 33 (20.6%) were ≥60 minutes.