21 questionnaire items where the user must identify symptoms presented in the last week, valuing them at "Little or nothing", " More or less" "Moderately "and " Severely".
Psychometric characteristics
This scale is a self-report measure of anxiety.
Items: 21
Reliability: Internal consistency for the BAI= (Cronbach’s α=0.92)Test-retest reliability (1 week) for the BAI = 0.75(Beck, Epstein, Brown, &Steer, 1988).
Validity: The BAI was moderately correlated with the revised Hamilton Anxiety Rating Scale (.51), and mildly correlated with the Hamilton Depression Rating Scale (.25) (Beck et al., 1988)
No. of items
21
Way of administration
Self-administered or by a professional
Way of qualification
The total sum of the scores obtained in each item is perforemed and the total score is obtained with them, which indicates the level of anxiety as follows: 0 to 5 points, minimal anxiety; 6 to 15 points, mild anxiety; 16 to 30 points, moderate anxiety; and from 31 to 63 points, severe anxiety.
Application context
Instrument that can be applied at any level of care or in non-clinical populations to assess the anxiety level
Population
General adult population
References
Steer, Robert A., and Aaron T. Beck. "Beck Anxiety Inventory." (1997).