Table 3.

False-positive rate, false-negative rate, and mean charges in the specialist scenario*

Scenario	% False-positive (95% CI)	% False-negative (95% CI)	Mean charges (95% CI)
Ultrasound alone	2.5% (0%–10%)	17.5% (6%–30%)	$367.80 ($230.20–$726.90)
EDX alone	0.3% (0%–3%)	27.7% (14%–41%)	$428.30 ($311.00–$838.80)
Ultrasound followed by EDX	2.7% (0%–10%)	5.5% (0%–14%)	$369.50 ($249.20–$845.80)

* Based on repeated uniform sampling of 100-patient subgroups from the fictional population; EDX = electrodiagnostic testing.