Failure of Beta-Adrenergic Receptor Blockade to Prevent Arrhythmias Induced by Sympathetic Nerve Stimulation

Abstract
Factor analysis of pain and personality test data obtained from 119 patients with chronic pain syndromes yields seven factors: four composed of personality measures, two involving different psychophysical pain measures, and one sex-related factor. The chief factors, comprising more than 50 percent of the total variance, are "interpersonal alienation and manipulativeness," "clinical pain intensity", and "pain endurance."

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