The impact of physical therapy direct access policy on opioid shipments and opioid-related deaths: A difference-in-differences analysis.
Bejarano; Hull; Young; Meyers; Griffith · 2026 · PloS one
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)
We exploit state-level policy changes for physical therapy direct access to estimate the effect of enacting direct access physical therapy policy on per-capita opioid pill volume (PCPV) and opioid-related deaths (ORD) compared to states…
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Metadata source: PubMed · DOI 10.1371/journal.pone.0333292