Validation of the lie/bet screen for pathological gambling on two normal population data sets.

The validity of the Lie/Bet Screen was tested on two community population samples, one adult (n=2,014) and one adolescent sample (n=3,237), in Norway. With positive responses on at least one of the questions on Lie/Bet Screen used as the cutoff point the screen showed high both sensitivity and specificity. The negative predictive value was also high, but the positive predictive value was comparatively lower.