The AC-OK Cooccurring Screen: Reliability, Convergent Validity, Sensitivity, and Specificity

Table 4

Specificity and sensitivity AC-OK Co-occurring Screen agreement compared to two reference measures.

Specificity
The probability of the screen being positive when the person has the disorder
AC-OK Co-occurring Screen	ASI-psy	CAR-sa
Correct	170/96%	459/90.5%
Missed	7/4%	48/9.5%
Sensitivity
The probability of the screen being negative when the person does not have the disorder.
(i) The AC-OK Co-occurring Screen identified approximately 72% of all people screened as needing an assessment to determine if the person had a co-occurring disorder.
(ii) The estimated number of people in this population needing treatment for a co-occurring was 35%.
(iii) The disadvantage of a lower level of sensitivity is that only half of the people being screened will be assessed as having a co-occurring disorder.