Patterns in meperidine distribution and associations with income and obesity in the USA and Puerto Rico between 2019 and 2023: a retrospective study.
Gonzalez B; Healy LG; Harrison LR; Piper BJ · 2026 · BMJ open
WASTE classifies this as Negative / Null Result Report · AI classification, approximate
The study found no significant effect — useful as a negative control or null benchmark for your own design.
Abstract (excerpt)
Objectives Meperidine, once viewed as relatively safe, is now discouraged in clinical settings due to its associated risks. Previous studies have identified a significant decrease in meperidine distribution across the USA from 2000 to…
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Metadata source: Europe PMC · DOI 10.1136/bmjopen-2025-108130