Two-Item Conjoint Screening (TICS) for Alcohol and Substance Abuse

Time Interval: during the last year

Questions - Have you felt:

(1) that your usage was more than intended (meant to used)?

(2) a need to cut-down on usage

total score =

= SUM(points for both questions)

Interpretation:

• minimum score: 0

• maximum score: 2

• The higher the score the greater the risk for alcohol and/or substance abuse.

Performance:

• The area under the ROC curve was 0.72 (Lee et al).

• The sensitivity and specificity for a score >= 1: around 80%.