Clinician validation of Poison Control Center (PCC) intentional exposure cases involving prescription opioids

Poison Control Center (PCC) cases involving intentional ingestion, injection or inhalation of prescription opioids are a potentially valuable source of information on the abuse and misuse of these products. This study sought to validate PCC classifications of prescription opioid intentional exposure cases against clinical diagnostic criteria. 4,321 cases were reviewed. PCC-clinician concordance was good to excellent for Withdrawal, Abuse, and Suicide (kappa statistics: 0.73, 0.53, 0.48, respectively), but poor for Misuse and Intentional Unknown (Specific motive not known). Interrater reliability among clinicians was good (weighted kappa range: 0.56-0.68). Results demonstrate the degree of compatibility between PCC and standard nosologic classifications.