ArticleNeurology2020
Association of out-of-pocket costs on adherence to common neurologic medications.
Article in Neurology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers, 2 of them syntheses that pooled it.
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Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
13 citing papers in PubMed, 2 syntheses or guidelines pooled it, 25 citations in OpenAlex.
- Identifying predictors of neuropathic pain medication prescribing, adherence, and discontinuation: a systematic review and meta-analysis.British journal of anaesthesia · 2026Pooled it
- Pooled it
- Regional features in the treatment of Parkinson's disease in the Baltic States compared to Germany.BMC health services research · 2026Article
- Gabapentin Treatment Patterns Among Older Patients After Hospital Discharge for Acute Ischemic Stroke.medRxiv : the preprint server for health sciences · 2025Article
- Ensuring Access to Neurologic Care: Challenges and Opportunities.Seminars in neurology · 2025Review
- Cost Trends of New-To-Market Neurologic Medications: An Insurance Claims Database Analysis.Neurology · 2025Article
- Seven Strategies to Integrate Equity within Translational Research in Neurology.Annals of neurology · 2024Review
- The impact of the socioeconomic factor on Parkinson's disease medication adherence: a scoping review.Arquivos de neuro-psiquiatria · 2024Article
- Direct Medical Costs of COPD in the USA: An Analysis of the Medical Expenditure Panel Survey 2017-2018.Applied health economics and health policy · 2023Article
- Cost and utilization of healthcare services for persons with diabetes.Diabetes research and clinical practice · 2023Article
- Article
- Costs and Utilization of New-to-Market Neurologic Medications.Neurology · 2023Article
- Delphi consensus on the real-world application of the updated diagnostic and treatment guidelines for migraine in Asia Pacific.Frontiers in neurologyArticle
Corrections and comments
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Authors and funding
8 authors at 1 institution in 1 country.
Funding
Abstract
objectiveTo determine the association between out-of-pocket costs and medication adherence in 3 common neurologic diseases.
methodsUtilizing privately insured claims from 2001 to 2016, we identified patients with incident neuropathy, dementia, or Parkinson disease (PD). We selected patients who were prescribed medications with similar efficacy and tolerability, but differential out-of-pocket costs (neuropathy with gabapentinoids or mixed serotonin/norepinephrine reuptake inhibitors [SNRIs], dementia with cholinesterase inhibitors, PD with dopamine agonists). Medication adherence was defined as the number of days supplied in the first 6 months. Instrumental variable analysis was used to estimate the association of out-of-pocket costs and other patient factors on medication adherence.
resultsWe identified 52,249 patients with neuropathy on gabapentinoids, 5,246 patients with neuropathy on SNRIs, 19,820 patients with dementia on cholinesterase inhibitors, and 3,130 patients with PD on dopamine agonists. Increasing out-of-pocket costs by $50 was associated with significantly lower medication adherence for patients with neuropathy on gabapentinoids (adjusted incidence rate ratio [IRR] 0.91, 0.89-0.93) and dementia (adjusted IRR 0.88, 0.86-0.91). Increased out-of-pocket costs for patients with neuropathy on SNRIs (adjusted IRR 0.97, 0.88-1.08) and patients with PD (adjusted IRR 0.90, 0.81-1.00) were not significantly associated with medication adherence. Minority populations had lower adherence with gabapentinoids and cholinesterase inhibitors compared to white patients.
conclusionsHigher out-of-pocket costs were associated with lower medication adherence in 3 common neurologic conditions. When prescribing medications, physicians should consider these costs in order to increase adherence, especially as out-of-pocket costs continue to rise. Racial/ethnic disparities were also observed; therefore, minority populations should receive additional focus in future intervention efforts to improve adherence.
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