How much of the data in each case is randomized?
The patient’s age and duration of symptoms are randomized within ranges set for each case. The administrator has the option of assigning or randomizing the patient’s gender. The amplitudes, latencies and conduction velocities of normal nerves are randomized within normal ranges. Each result must follow rules pertaining to “side-to-side” and “nerve-to-nerve” comparisons. For instance, the right median sensory response at the wrist may have an amplitude of 20 to 85 uV and a peak latency of 2.5 to 3.7 ms. The left median sensory response must have an amplitude within 18 uV and a latency within 0.4 ms of these values. The right median sensory latency must also be within 0.4 ms of the right ulnar sensory latency. In each case, new ranges are assigned to abnormal nerves. For distal sensory and motor nerves, the amplitudes and latencies are randomized within these new ranges. For proximal motor nerves, new ranges can be given for conduction velocity and percentage of amplitude drop. The latte
