Table 4:

Diagnostic performance of the scoring system^{^a}

Score	Seizures		Sensitivity	Specificity	NPV	PPV
Score	No (n = 45)	Yes (n = 33)	Sensitivity	Specificity	NPV	PPV
0	13	1	97%	29%	93%	49%
≥1	32	31	97%	29%	93%	49%
<2	39	11	66%	87%	78%	78%
≥2	6	21	66%	87%	78%	78%
<3	44	28	13%	98%	61%	80%
≥3	1	4	13%	98%	61%	80%

Note:—NPV indicates negative predictive value; PPV, positive predictive value.
↵a A threshold of 2 has very good overall diagnostic performance.