Comparison · NCT03932799-415bd3c1
Washington vs Ohio: Opioid Overdose/Adverse Effects
Calculated by ConductScience from the counts the trial posted to ClinicalTrials.gov.
2 sourcestrial-comparisons-2026-03-23-0.1.0
Cite this record
ConductScience Library. Washington vs Ohio: Opioid Overdose/Adverse Effects. Trial comparisons, record NCT03932799-415bd3c1. Release trial-comparisons-2026-03-23-0.1.0, 23 Mar 2026. https://conductscience.org/library/comparisons/NCT03932799-415bd3c1
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Measures6
Calculated by ConductScience from the counts the trial posted to ClinicalTrials.gov.
| Measure | Value | 95% interval, lower | 95% interval, upper | Method | Note |
|---|---|---|---|---|---|
| Risk in group 1 | 0.00101 | 0.000278 | 0.00368 | wilson | |
| Risk in group 2 | 0 | 0 | 0.0119 | wilson | |
| Risk difference, group 1 minus group 2 | 0.00101 | -0.0109 | 0.00368 | newcombe hybrid score | |
| Risk ratio, group 1 over group 2 | log | a group has no participants with the outcome | |||
| Odds ratio, group 1 over group 2 | log | a cell of the two-by-two table is zero | |||
| Number needed to treat, for one more participant with the outcome on Washington than on Ohio | 988 | from the risk difference interval | the interval includes no difference |
Source ClinicalTrials.gov
Groups2
Neither group, or both, names a comparator, so the groups keep ClinicalTrials.gov's order.
| Group | Title | Description | With the outcome | Analysed | ClinicalTrials.gov code |
|---|---|---|---|---|---|
| Group 1 | Washington | Injured workers in the Washington Department of Labor and Industries (L\&I) state fund insurance system - required to obtain prior authorization for opioids prescribed after 6 weeks from an injury. | 2 | 1,976 | OG000 |
| Group 2 | Ohio | Injured workers in the Ohio Bureau of Workers' Compensation (BWC) state fund insurance system - subject to a retrospective review of claim if receiving opioid prescription after 6 weeks from injury. Prescriber notified if best practices are not being documented. | 0 | 319 | OG001 |
Source ClinicalTrials.gov
Outcome
- Type
- SECONDARY
- Title
- Opioid Overdose/Adverse Effects
- Description
Qualifying International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) diagnosis codes: first 3 digits = T40 and 5th digit = (0,1,2,3,4,6) and 7th digit not = 6 (excludes underdosing).~1 = presence of qualifying ICD-10-CM diagnosis code; 0 = otherwise.
- Time frame
- 12 months after injury
- Population
- * Analysis performed within a distinct survey sample of workers~* Estimates for WA have been survey-weighted; sampling weights for OH were always 1.
Source ClinicalTrials.gov
Trial
- Title
- Comparing State Payer Strategies to Prevent Unsafe Opioid Prescribing
- NCT number
- NCT03932799
- Phases
- Conditions
- Opioid Use, Opioid-Related Disorders
- Interventions
- Prospective prior authorization (PA) with hard stops in Washington, Retrospective review (RR) with prescriber notification in Ohio
- Lead sponsor
- University of Washington
- Results first posted
- 2023-09-28
- Results on ClinicalTrials.gov
- https://clinicaltrials.gov/study/NCT03932799?tab=results
Source ClinicalTrials.gov
Source
- Release
- trial-comparisons-2026-03-23-0.1.0
- Release manifest SHA-256
- f66225897fbf258b57ea10bdacfd0347d3cdfda93f7f5685234b7e06ea36fa57
- AACT copy
- 2026-03-23
- Tables read
- outcome_counts.parquet, outcome_measurements.parquet, outcomes.parquet, reported_event_totals.parquet, reported_events.parquet, result_groups.parquet, studies.parquet, ctgov_trial.parquet
Source ClinicalTrials.gov
Sources 2
- ClinicalTrials.gov's posted results, through CTTI's AACTFreely available. Acknowledgement requested
- ClinicalTrials.govNo license stated
Each source's terms
- ClinicalTrials.gov's posted results, through CTTI's AACTClinicalTrials.gov data via Aggregate Analysis of ClinicalTrials.gov (AACT), CTTI. CTTI makes its materials freely available and requests acknowledgement. https://aact.ctti-clinicaltrials.org/documentation/299
- ClinicalTrials.govnone stated
ClinicalTrials.gov's data carry an international copyright outside the United States: https://clinicaltrials.gov/about-site/terms-conditions. The measures are ConductScience's calculation from them.
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