Do interventions that address patient cost-sharing improve adherence to prescription drugs? A systematic review of recently published studies

Adherence to Oral Targeted Anti-Lung Cancer Therapy: A Qualitative Interview Study

OBJECTIVE

Oral targeted antineoplastic drugs (OTADs) are becoming more and more acceptable for lung cancer treatment due to their advantages such as the convenience of administration and milder side effects. However, medication adherence represents a major issue for prolonged OTAD treatment. In this study, the factors associated with treatment adherence to OTAD were explored through the Adherence Influencing Factor Framework suggested by WHO. Based on these results, we further examined the potential factors related to social psychological cognition in OTAD adherence in patients with lung cancer.

METHODS

This qualitative study was conducted in public hospitals in Henan, China. Data were collected through semi-structured interviews with selected lung cancer patients. Face-to-face interviews were audio-recorded and transcribed for thematic analysis.

RESULTS

Of the 21 patients interviewed, 17 were males and 4 were females. The analysis of the data led to four themes, ie, patient-related factors (medication-taking introspection, family structure, weigh the pros and cons of OTAD treatment), medication-related factors (medication experience, adverse reactions, information access), physician/nurse-related factors (shared decision making, doctor's reaction, nurse's inquiry) and society-related factors (fear, stigma).

CONCLUSION

Family structure, weigh the pros and cons of OTAD treatment, information access, shared decision making, nurse's inquiry are potential factors affecting OTAD adherence in lung cancer patients. Providing drug information support to patients, inviting patients to join in shared decision-making and strengthening doctor-patient-nurse cooperation are important for improving medication adherence. Further research should be conducted to help healthcare providers to promote the medication adherence of lung cancer patients to OTAD treatment.

Interventions to improve medication adherence in mental health: the update of a systematic review of cost-effectiveness

OBJECTIVE

Medication non-adherence in mental health problems has social and economic costs. The objective of the study was to review the cost-effectiveness of interventions to enhance medication adherence in patients with mental health problems.

METHODS

The update of a previous systematic review was performed. Databases were searched in June 2019: MEDLINE, PSYCINFO, EMBASE, CINAHL, CRD, WOS. Cost-effectiveness studies comparing an intervention to improve the medication adherence with other interventions/usual care in adults with mental health problems were included. Data were extracted, methodological quality of the studies was assessed and a narrative synthesis was performed.

RESULTS

Nine studies were included in the review. The interventions that showed medication adherence increase were: a financial incentive when depot injection was taken by patients with psychotic disorders, a value-based benefit design policy including copayment and counselling in a company setting, and a medication treatment decision supported by a pharmacogenetic test. The other studies (coaching by pharmacists; a psychological and educational intervention at health care centres) did not find differences between groups. No study found cost differences between alternatives.

CONCLUSIONS

Interventions to improve medication adherence in adults with mental health problems could be cost-effective, especially those based on financial incentives, although more research is needed. KEYPOINTS There are several types of interventions designed to enhance medication adherence in patients with mental health problems. Few of them have demonstrated cost-effectiveness. Two studies found that a financial incentive per depot injection in patients with psychotic disorders improved the medication adherence. Two other studies found improvement in adherence due to two specific interventions: a value-based benefit design policy in a company setting and a pharmacogenetic test supporting the medication treatment decision. No study found differences in costs between the intervention and the comparator. More research is needed to implement cost-effective interventions.

Behavioral Economic Insights to Improve Medication Adherence in Adults with Chronic Conditions: A Scoping Review

BACKGROUND AND OBJECTIVE

Medication adherence is poor in patients with chronic conditions. Behavioral economic interventions may reduce biases that are associated with poor adherence. The objective of this review is to map the available evidence on behavioral economic interventions to improve medication adherence in adults with chronic conditions in high-income settings.

METHODS

We conducted a scoping review and reported the study using the Joanna Briggs Institute Reviewers' Manual and the PRISMA Extension for Scoping Review checklist. We searched PubMed, EMBASE, SCOPUS, PsycINFO, EconLit, and CINAHL from database inception to 29 August, 2018 for peer-reviewed studies and included a search of the gray literature. Data on study characteristics, study design, and study outcomes were extracted by one reviewer. Twenty-five percent of the studies were verified by a second reviewer.

RESULTS

Thirty-four studies, targeting diabetes mellitus, human immunodeficiency virus, and cardiovascular and renal diseases met our inclusion criteria. All but two studies were from the USA. The majority of interventions used financial incentives, often in conjunction with other behavioral economic concepts. Non-financial interventions included framing, social influences, reinforcement, and feedback. The effectiveness of interventions was mixed.

CONCLUSIONS

Behavioral economic informed interventions show promise in terms of improving medication adherence. However, there is no single simple intervention. This review highlighted the importance of targeting non-adherent patients, understanding their reasons for non-adherence, providing reminders and feedback to patients and physicians, and measuring clinical outcomes in addition to medication adherence. Further research in settings that differ from the US health system is needed.

Age Structural Transitions and Copayment Policy Effectiveness: Evidence from Taiwan's National Health Insurance System

Background: Population ageing is a worldwide phenomenon that could influence health policy effectiveness. This research explores the impact of age structural transitions on copayment policy responses under Taiwan’s National Health Insurance (NHI) system. Methods: The time-varying parameter vector autoregressive model was applied to create two measures of the copayment policy effectiveness, and multiple linear regression models were used to verify the nonlinear effect of age structural transitions on copayment policy responses. Results: Our results show that copayment policy effectiveness (in terms of the negative response of medical center outpatient visits to upward adjustments in copayment) is positively correlated with the proportions of the population in two older age groups (aged 55–64 and ≥ 65) and children (age < 15), but negatively correlated with the proportion of the population that makes up most of the workforce (aged 15‒54). These tendencies of age distribution, which influence the responses of medical center outpatient visits to copayment policy changes, predict that copayment policy may have a greater influence on medical center outpatient utilization in an ageing society. Conclusions: Policymakers should be concerned about the adverse effects of copayment adjustments on the elderly, such as an increasing financial burden and the effect of pricing some elderly patients out of Taiwan’s NHI system.

Affordable and equitable access to subsidised outpatient medicines? Analysis of co-payments under the Additional Drug Package in Kyrgyzstan

BACKGROUND

Out-of-pocket (OOP) payments can constitute a major barrier for affordable and equitable access to essential medicines. Household surveys in Kyrgyzstan pointed to a perceived growth in OOP payments for outpatient medicines, including those covered by the benefits package scheme (the Additional Drug Package, ADP). The study aimed to explore the extent of co-payments for ADP-listed medicines and to explain the reasons for developments.

METHODS

A descriptive statistical analysis was performed on prices and volumes of prescribed ADP-listed medicines dispensed in pharmacies during 2013-2015 (1,041,777 prescriptions claimed, data provided by the Mandatory Health Insurance Fund). Additionally, data on the value and volume of imported medicines in 2013-2015 (obtained from the National Medicines Regulatory Agency) were analysed.

RESULTS

In 2013-2015, co-payments for medicines dispensed under the ADP grew, on average, by 22.8%. Co-payments for ADP-listed medicines amounted to around 50% of a reimbursed baseline price, but as pharmacy retail prices were not regulated, co-payments tended to be higher in practice. The increase in co-payments coincided with a reduction in the number of prescriptions dispensed (by 14%) and an increase in average amounts reimbursed per prescription in nearly all therapeutic groups (by 22%) in the study period. While the decrease in prescriptions suggests possible underuse, as patients might forego filling prescriptions due to financial restraints, the growth in average amounts reimbursed could be an indication of inefficiencies in public funding. Variation between the regions suggests regional inequity. Devaluation of the national currency was observed, and the value of imported medicines increased by nearly 20%, whereas volumes of imports remained at around the same level in 2013-2015. Thus, patients and public procurers had to pay more for the same amount of medicines.

CONCLUSIONS

The findings suggest an increase in pharmacy retail prices as the major driver for higher co-payments. The national currency devaluation contributed to the price increases, and the absence of medicine price regulation aggravated the effects of the depreciation. It is recommended that Kyrgyzstan should introduce medicine price regulation and exemptions for low-income people from co-payments to ensure a more affordable and equitable access to medicines.