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To determine the dimensions of self-reported anxiety in psychiatric inpatients, the Beck Anxiety Inventory (BAI; Beck & Steer, 1990) was administered by computer to 250 inpatients diagnosed with mixed disorders. An iterated principal-factor analysis was performed on the intercorrelations among the 21 BAI items using a Promax rotation. Two factors were found representing somatic and subjective symptoms of anxiety. These dimensions significantly matched those previously described by Beck, Epstein, Brown, and Steer (1988) for outpatients diagnosed with mixed psychiatric disorders. The generalizability of the somatic and subjective dimensions for inpatients and outpatients is discussed.
Steer et al. (Tue,) studied this question.