A psychometric reanalysis of the Albany Panic and Phobia Questionnaire

The psychometric properties of the 27-item Albany Panic and Phobia Questionnaire (APPQ) were evaluated in 1930 outpatients with DSM-IV anxiety and mood disorders. Although prior findings of a 3-factor latent structure were upheld in several replications (Social Phobia, Agoraphobia, Interoceptive), three items failed to load on their predicted factor (Interoceptive). Multiple-groups CFAs indicated that the measurement properties of the APPQ were invariant in male and female patients, with the exception of an intercept of one item from the Agoraphobia scale which evidenced bias against females. The three APPQ dimensions were consistently associated with high levels of scale reliability and factor determinacy. Strong evidence of concurrent validity of the Social Phobia and Agoraphobia factors was obtained in relation to interview and questionnaire measures. Although the Interoceptive factor was more strongly related to criterion measures of anxiety sensitivity and fear of panic than Social Phobia, the Agoraphobia factor had the strongest relationships with these validity indices. The results are discussed in regard to psychometric implications for the APPQ and conceptual issues pertaining to the discriminant validity of fear of agoraphobic situations and fear of sensation-producing activities.