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Evaluating the Impact of a Value-based Prescription Drug Formulary

Value-based Formulary-Essentials: Testing and Expanding on Value in Prescription Drug Benefit Design

Status
Completed
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT04904055
Acronym
VBF-e
Enrollment
36333
Registered
2021-05-27
Start date
2015-01-01
Completion date
2019-12-31
Last updated
2021-05-27

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Value-Based Health Insurance

Keywords

Cost Sharing / economics, Formularies as Topic, Insurance, Health / economics, Value-Based Health Insurance / economics

Brief summary

The objective of this study is to evaluate the impact of the value-based formulary on patient out-of-pocket spending and health plan spending as well as the impact of the value-based formulary on medication use, emergency department visits, hospitalizations, and outpatient office visits.

Interventions

OTHERValue-based Formulary

Prescription drug formulary tiers informed by estimated value

Sponsors

Donaghue Medical Research Foundation
CollaboratorOTHER
Kaiser Permanente
Lead SponsorOTHER

Study design

Observational model
COHORT
Time perspective
RETROSPECTIVE

Eligibility

Sex/Gender
ALL
Age
0 Years to 64 Years
Healthy volunteers
No

Inclusion criteria

* Individuals: * aged 0-64 * Continuously enrolled in an employer-sponsored health plan for at least 12 months (with one-month allowable gap) prior to the index date * For individuals in the exposed group, the index date is defined as the start date of value-based formulary implementation at the employer group level * For individuals in the control group, the index date is defined as the index date of the matched exposed individual * Employer groups: * that transition to the value-based formulary if they transitioned all enrollees in that employer group (no individual selection)

Exclusion criteria

\- Individuals with: * missing gender information * missing zip code level demographics at all member months

Design outcomes

Primary

MeasureTime frameDescription
Total spending for prescription drugsFrom 24 months before insurance transition until up to 36 months after transitionImpact of value-based formulary on patient out-of-pocket plus health plan spending on prescription drugs per member per month

Secondary

MeasureTime frameDescription
Health plan spending for prescription drugsFrom 24 months before insurance transition until up to 36 months after transitionImpact of value-based formulary on health plan spending for prescription drugs per member per month
Total healthcare spendingFrom 24 months before insurance transition until up to 36 months after transitionImpact of value-based formulary on total healthcare spending per member per month
Number of emergency department visitsFrom 24 months before insurance transition until up to 36 months after transitionImpact of value-based formulary on number of emergency department visits per member per month
Patient out-of-pocket spending for prescription drugsFrom 24 months before insurance transition until up to 36 months after transitionImpact of value-based formulary on patient out-of-pocket spending for prescription drugs per member per month
Number of outpatient office visitsFrom 24 months before insurance transition until up to 36 months after transitionImpact of value-based formulary on number of outpatient office visits per member per month
Days supply of medicationFrom 24 months before insurance transition until up to 36 months after transitionImpact of value-based formulary on days supply of medication per member per month
Number of days in hospitalFrom 24 months before insurance transition until up to 36 months after transitionImpact of value-based formulary on number of days in hospital per member per month

Countries

United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 8, 2026