Table 3.

Positive predictive values for predicting an absent or present SEP in patients after CPR

	Positive predictive value for an absent SEP	Positive predictive value for a present SEP
Motor score 24 h	0.45 (0.38–0.52)	0.71 (0.55–0.83)
Motor score 48 h	0.47 (0.39–0.54)	0.83 (0.68–0.91)
Motor score 72 h	0.51 (0.44–0.58)	0.83 (0.69–0.91)
Eye score 24 h	0.44 (0.37–0.52)	0.67 (0.53–0.80)
Eye score 48 h	0.44 (0.36–0.52)	0.65 (0.53–0.76)
Eye score 72 h	0.54 (0.46–0.61)	0.75 (0.65–0.84)
Pupillary light responses 24 h	0.63 (0.47–0.77)	0.62 (0.55–0.69)
Pupillary light responses 48 h	0.86 (0.71–0.94)	0.69 (0.61–0.75)
Pupillary light responses 72 h	0.91 (0.79–0.96)	0.65 (0.58–0.71)
Corneal reflexes 24 h	0.63 (0.51–0.73)	0.67 (0.59–0.74)
Corneal reflexes 48 h	0.74 (0.61–0.84)	0.72 (0.64–0.79)
Corneal reflexes 72 h	0.77 (0.65–0.86)	0.67 (0.59–0.73)

All values are expressed with their 95% confidence limits. Positive predictive value for an absent or a present SEP = the proportion of the patients who have a SEP result as expected based on the neurological examination (eye score 1, motor score 1–3, bilaterally absent pupillary light responses or corneal reflexes for an absent SEP; eye score 2–4, motor score 4–6, present pupillary light responses or corneal reflexes for a present SEP)

SEP median nerve somatosensory evoked potentials, CPR cardiopulmonary resuscitation