Consequences of non-medical switch among patients with type 2 diabetes

Payer approval and rejection of oral anticoagulant prescriptions and prescription abandonment patterns among patients with venous thromboembolism

BACKGROUND

Venous thromboembolism (VTE) is a major public health condition that renders patients at risk of recurrent events, which significantly increases their morbidity, mortality, and health care costs. Apart from warfarin, direct oral anticoagulants, such as apixaban, dabigatran, or rivaroxaban, are approved for VTE treatment. Cardiovascular drugs are largely impacted by formulary restrictions; however, the impact on oral anticoagulants (including warfarin and direct oral anticoagulants) in VTE has not been well studied.

OBJECTIVE

To describe the extent of payer-rejected claims for oral anticoagulants for VTE and the factors associated with rejected claims. Prescription abandonment of oral anticoagulants and the time to an eventual fill for oral anticoagulant after rejection or abandonment were also evaluated.

METHODS

A retrospective cohort study was conducted among patients with VTE newly prescribed an oral anticoagulant (first claim was the index) between October 2016 and October 2021. Descriptive statistics were used to describe the proportion of patients with paid (ie, filled), rejected, or abandoned index oral anticoagulant prescription and journey to paid prescription among those with initial rejection. Multivariable logistic regression was used to identify factors associated with initial rejection.

RESULTS

Among the overall sample (N = 297,312), 74.3% had initial oral anticoagulant prescriptions approved, 9.1% had them rejected, and 16.7% abandoned them. Of the patients with initial rejection, 82.1% eventually filled their oral anticoagulant prescriptions; however, for 14.2% of these patients, the first fill was for an oral anticoagulant other than that initially prescribed. The mean time to a first fill for an oral anticoagulant after an initial rejection was 18.3 days. More than half of the patients with an initial rejected oral anticoagulant claim had at least 1 additional rejection during the follow-up period. Of the patients who abandoned their initial oral anticoagulant prescription, 83.9% filled an oral anticoagulant prescription during follow-up; the mean time to fill for the index oral anticoagulant was 15.6 days. Oral anticoagulant type, Medicare payer coverage, prescribing physician specialty, and VTE diagnosis setting of care were significantly associated with index oral anticoagulant claim rejection (P < 0.05).

CONCLUSIONS

Rejection and abandonment may delay access to oral anticoagulant treatment. Factors contributing to these scenarios should be understood and addressed for proper VTE management.

The Underground Exchange of Diabetes Medications and Supplies: Donating, Trading, and Borrowing, Oh My!

BACKGROUND

The cost of diabetes medications and supplies is rising, resulting in access challenges. This study assessed the prevalence of and factors predicting underground exchange activities-donating, trading, borrowing, and purchasing diabetes medications and supplies.

RESEARCH DESIGN AND METHODS

A convenience sample of people affected by diabetes was recruited online to complete a survey. Mixed method analysis was undertaken, including logistic regression to examine the relationship between self-reported difficulty purchasing diabetes medications and supplies and engagement in underground exchange activity. Thematic qualitative analysis was used to examine open-text responses.

RESULTS

Participants (N = 159) self-reported engagement in underground exchange activities, including donating (56.6%), donation receiving (34.6%), trading (23.9%), purchasing (15.1%), and borrowing (22%). Such activity took place among a variety of individuals, including friends, family, coworkers, online acquaintances and strangers. Diabetes-specific financial stress predicted engagement in trading diabetes mediations or supplies (OR 6.3, 95% CI 2.2-18.5) and receiving donated medications or supplies (OR 2.8, 95% CI 1.1-7.2). One overarching theme, unmet needs, and three subthemes emerged: (1) factors influencing underground exchange activity, (2) perceived benefits of underground exchange activity, and (3) perceived consequences of underground exchange activity.

CONCLUSION

Over half of the participants in this study engaged in underground exchange activities out of necessity. Providers must be aware about this underground exchange and inquire about safety and possible alternative resources. There is an urgent need to improve access to medications that are essential for life. Our study points to a failure in the US healthcare system since such underground exchanges may not be necessary if medications and supplies were accessible.

The impact of non-medical switching among ambulatory patients: an updated systematic literature review

Background: Non-medical switching (NMS) is defined as switching to a clinically similar but chemically distinct medication for reasons apart from lack of effectiveness, tolerability or adherence. Objective: To update a prior systematic review evaluating the impact of NMS on outcomes. Data sources: An updated search through 10/1/2018 in Medline and Web of Science was performed. Study selection: We included studies evaluating ≥25 patients and measuring the impact of NMS of drugs on ≥1 endpoint. Data extraction: The direction of association between NMS and endpoints was classified as negative, positive or neutral. Data synthesis: Thirty-eight studies contributed 154 endpoints. The direction of association was negative (n = 48; 31.2%) or neutral (n = 91; 59.1%) more often than it was positive (n = 15; 9.7%). Stratified by endpoint type, NMS was associated with a negative impact on clinical, economic, health-care utilization and medication-taking behavior in 26.9%,41.7%,30.3% and 75.0% of cases; with a positive effect seen in 3.0% (resource utilization) to 14.0% (clinical) of endpoints. Of the 92 endpoints from studies performed by the entity dictating the NMS, 88.0%were neutral or positive; whereas, only 40.3%of endpoints from studies conducted separately from the interested entity were neutral or positive. Conclusions: NMS was commonly associated with negative or neutral endpoints and was seldom associated with positive ones.