The CAGE questionnaire, among other methods, has been extensively validated for use in identifying alcoholism. CAGE is considered a validated screening technique, with one study determining that it CAGE test scores >=2 had a sensitivity of 93% and a specificity of 76% for the identification of problem drinkers.
It is not valid for diagnosis of other substance use disorders, although somewhat modified versions of the CAGE are frequently implemented for such a purpose.
Probable alcohol abuse or dependence: A risk factor for intensive-care readmission in patients undergoing elective vascular and thoracic surgical procedures
May 01, 1999; Objective: To determine whether alcohol abuse or dependence is a risk factor for perioperative complications, increased duration...