70-80% of people who meet the clinically accepted diagnostic criteria for substance abuse do not believe they have a problem. To increase peoples understanding and acceptance of the issues they are facing, S-BIRT, Screening, Brief Intervention, Referral and Treatment has been shown to be very valuable tool. The brief intervention alone, just 5-10 minutes of evaluation and education about drugs (including alcohol and tobacco), drug use and the impact on peoples health and lives, has been shown in studies to have an effect of reducing drug use by up to 50%.