Measurement of panic disorder by a modified panic diary.

The psychometric characteristics of panic diary measures were investigated in a sample of 37 patients suffering from panic disorder with agoraphobia. Following recommendations made in the recent consensus development conference on the assessment of panic disorder, daily ratings included not only the occurrence of panic attacks but also fear of panic, expectancy of panic, and expected aversiveness of panic. These new measures were reliable and, on the whole, demonstrated good divergent and convergent validity. Further, adding such measures increased the incremental validity of panic disorder assessment.