Exclusion of controls with subclinical UNE produced less stringent normative values ( 2-cm conduction velocity : 25 to 31 m/s ; US cross-sectional area : 11.6 to 9.6 mm2 ) , which raised diagnostic sensitivity ( short-segment NCS : 76 % to 90 % ; 10-cm NCS : 72 % to 85 % , US : 43 % to 79 % ) .