Instrument Scoring

The DAS-Aconsists of 8 items and has a 7-point Likert response scale. The responses are scored as follows:

Scoring Method:

To score the DAS-A, the average of the 8 item scores (items 1 through 8) is computed. The average score is multiplied by 10. The total score has a range of 0 to 100.

1. Calculate the mean raw score by adding up the item response scores for each item and dividing this total by the number of items completed.
2. Transform this mean raw score by multiplying by 10, as below:

  (Sum of completed item response scores)     X 10 = Transformed Score
        Total number of completed items

Transformed scores range from 0 to 100 where higher scores reflect greater severity of anxiety symptoms. Transformed scores can be obtained when at least 60% of the items are answered. If 5 or more item responses are missing, the DAS-A scores should be set to missing.

Time to Score:

The scoring and the transformation of the scores takes approximately five minutes.