William T Basco1, Myla Ebeling2, Sandra S Garner2, Thomas C Hulsey3, Kit Simpson2. 1. Medical University of South Carolina, Charleston, SC, USA bascob@musc.edu. 2. Medical University of South Carolina, Charleston, SC, USA. 3. West Virginia Unviversity, Morgantown, WV, USA.
Abstract
OBJECTIVE: To estimate the frequency of potential overdoses among outpatient opioid-containing prescriptions. METHOD: Using 11 years of outpatient Medicaid prescription data, we compared opioid dose dispensed (observed) versus expected dose to estimate overdose error frequencies. A potential overdose was defined as any preparation dispensed that was >110% of expected based on imputed, 97th percentile weights. RESULTS: There were 59 536 study drug prescriptions to children 0 to 36 months old. Overall, 2.7% of the prescriptions contained potential overdose quantities, and the average excess amount dispensed was 48% above expected. Younger ages were associated with higher frequencies of potential overdose. For example, 8.9% of opioid prescriptions among infants 0 to 2 months contained potential overdose quantities, compared with 5.7% among infants 3 to 5 months old, 3.6% among infants 6 to 11 months old, and 2.3% among children >12 months (P < .0001). CONCLUSIONS: Opioid prescriptions for infants and children routinely contained potential overdose quantities.
OBJECTIVE: To estimate the frequency of potential overdoses among outpatient opioid-containing prescriptions. METHOD: Using 11 years of outpatient Medicaid prescription data, we compared opioid dose dispensed (observed) versus expected dose to estimate overdose error frequencies. A potential overdose was defined as any preparation dispensed that was >110% of expected based on imputed, 97th percentile weights. RESULTS: There were 59 536 study drug prescriptions to children 0 to 36 months old. Overall, 2.7% of the prescriptions contained potential overdose quantities, and the average excess amount dispensed was 48% above expected. Younger ages were associated with higher frequencies of potential overdose. For example, 8.9% of opioid prescriptions among infants 0 to 2 months contained potential overdose quantities, compared with 5.7% among infants 3 to 5 months old, 3.6% among infants 6 to 11 months old, and 2.3% among children >12 months (P < .0001). CONCLUSIONS: Opioid prescriptions for infants and children routinely contained potential overdose quantities.
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