Pseudoseizure: Sensitivity and Specificity

Introduction: aka psychogenic nonepileptic seizures

The sensitivity and specificity of findings for Pseudoseizure are listed below. See the left navigation bar to change the display.

Pre-Test Probability (Prevalence): %.	Post-Test Probability (Predictive Value): %.	Switch to display mode.
Note that calculating probabilities from more than one** finding is inherently inaccurate because findings are not independent. (For example, using two positive findings that share a common pathogenesis is likely to overestimate the true probability.)


Finding	Result	Sensitivity	Specificity
[ + ] Eye Closure	+ 0 -	96%	98%
by history Study: Neurologist. 2008 Jul;14(4):266-70. PMID: 18617856
[ + ] Eye Closure	+ 0 -	64%	74%
observed clinically Study: Neurologist. 2008 Jul;14(4):266-70. PMID: 18617856
[ + ] Ictal Stutter	+ 0 -	9%	100%
repeated utterances of initial phonemes or words during a seizure, either spontaneously or in response to questioning, which was not present interictally Study: Neurologist. 2008 Jul;14(4):266-70. PMID: 18617856
[ + ] Pelvic Thrusting	+ 0 -	17%	89%
any pelvic thrusting component in history, vs any kind of seizure Study: Neurologist. 2008 Jul;14(4):266-70. PMID: 18617856
[ + ] Pelvic Thrusting	+ 0 -	78%	76%
predominant symptom (by history) is pelvic thrusting. vs frontal lobe epilepsy. Study: Neurologist. 2008 Jul;14(4):266-70. PMID: 18617856
[ + ] Pelvic Thrusting	+ 0 -	100%	20%
clinically observed pelvic thrusting. vs frontal epilepsy Study: Neurologist. 2008 Jul;14(4):266-70. PMID: 18617856
[ + ] Transitional Objects	+ 0 -	5%	99%
aka teddy bear sign Study: Neurologist. 2008 Jul;14(4):266-70. PMID: 18617856