Comparative Analysis of the Cost of Insulin Treated Patients in Bulgaria

Biosimilar Insulins and Their Impact on Prices and Utilization of Insulins in Bulgaria

The aim was to explore the availability of biosimilar insulins on the national market in Bulgaria and their impact on prices and utilization. This was a retrospective, quantitative, longitudinal study during the period 2014–2020. Authorized-for-sale, biosimilar insulins at the European level were compared with those on the national market. Prices and utilization were compared in value, number of defined daily dose (DDD), and DDD/1000 inh/day. Almost all types of insulins possessed biosimilars, and even more than one on the European market, but only two were found to be available and reimbursed on the national market. The total number of reimbursed INNs was 11, and for seven of them, changes in reference price per DDD were found. The highest price decrease was observed for insulin (price per DDD decline from 2.77 to 2.22 Bulgarian Leva (BGN)). The total expenditure for insulin increased from 68 to approximately 72.8 mil BGN (34 to approximately 37 mil Euro). The utilization in DDD/1000/inh/day decreased from 16.12 to 15.31. Only two biosimilar insulins were found to be available on the national market, with a slow decrease in prices and stable utilization. Other regulatory and financial measures are probably necessary to foster the insulins’ competition at the biosimilar level.

Cost-effectiveness of insulin degludec versus insulin glargine U100 in adults with type 1 and type 2 diabetes mellitus in Bulgaria

BACKGROUND

This analysis evaluates the cost-effectiveness of insulin degludec (degludec) versus biosimilar insulin glargine U100 (glargine U100) in patients with type 1 (T1DM) and type 2 diabetes mellitus (T2DM) in Bulgaria.

METHODS

A simple, short-term model was used to compare the treatment costs and outcomes associated with hypoglycaemic events with degludec versus glargine U100 in patients with T1DM and T2DM from the perspective of the Bulgarian National Health Insurance Fund. Cost-effectiveness was analysed over a 1-year time horizon using data from clinical trials. The incremental cost-effectiveness ratio (ICER) was the main outcome measure.

RESULTS

In Bulgaria, degludec was highly cost-effective versus glargine U100 in people with T1DM and T2DM. The ICERs were estimated to be 4493.68 BGN/quality-adjusted life year (QALY) in T1DM, 399.11 BGN/QALY in T2DM on basal oral therapy (T2DM_BOT) and 7365.22 BGN/QALY in T2DM on basal bolus therapy (T2DM_B/B), which are below the cost-effectiveness threshold of 39,619 BGN in Bulgaria. Degludec was associated with higher insulin costs in all three patient groups; however, savings from a reduction in hypoglycaemic events with degludec versus glargine U100 partially offset these costs. Sensitivity analysis demonstrated that the results were robust and largely insensitive to variations in input parameters. At a willingness-to-pay threshold of 39,619 BGN/QALY, the probability of degludec being cost-effective versus glargine U100 was 60.0% in T1DM, 99.4% in T2DM_BOT and 91.3% in T2DM_B/B.

CONCLUSION

Degludec is a cost-effective alternative to biosimilar glargine U100 for patients with T1DM and T2DM in Bulgaria. Degludec could be of particular benefit to those patients suffering recurrent hypoglycaemia and those who require additional flexibility in the dosing of insulin.

Chronic Hepatitis C-Related Cirrhosis Hospitalization Cost Analysis in Bulgaria

OBJECTIVE

HCV infection is a leading cause of chronic liver disease with long-term complications-extensive fibrosis, cirrhosis, and hepatocellular carcinoma. The objective of this study is to perform cost analysis of therapy of patients with chronic HCV-related cirrhosis hospitalized in the University Hospital "Queen Joanna-ISUL" for 3-year period (2012-2014).

METHODS

It is a prospective, real life observational study of 297 patients with chronic HCV infection and cirrhosis monitored in the University Hospital "Queen Joanna-ISUL" for 3-year period. Data on demographic, clinical characteristics, and health-care resources utilization (hospitalizations, highly specialized interventions, and pharmacotherapy) were collected. Micro-costing approach was applied to evaluate the total direct medical costs. The points of view are that of the National Health Insurance Fund (NHIF), hospital and the patients. Collected cost data are from the NHIF and hospitals tariffs, patients, and from the positive dug list for medicines prices. Descriptive statistics, chi-squared test, Kruskal-Wallis, and Friedman tests were used for statistical processing.

RESULTS

76% of patients were male. 93% were diagnosed in grade Child-Pugh A and B. 97% reported complications, and almost all developed esophageal varices. During the 3 years observational period, patients did not change the critical clinical values for Child-Pugh status and therefore the group was considered as homogenous. 847 hospitalizations were recorded for 3 years period with average length of stay 17 days. The mortality rate of 6.90% was extremely high. The total direct medical costs for the observed cohort of patients for 3-year period accounted for 1,290,533 BGN (€659,839) with an average cost per patient 4,577 BGN (€2,340). Statistically significant correlation was observed between the total cost per patient from the different payers' perspective and the Child-Pugh cirrhosis score.

CONCLUSION

HCV-related cirrhosis is resource demanding and sets high direct medical costs as it is related with increased hospitalizations and complications acquiring additional treatment.

Cost of severe hypoglycaemia in nine European countries

OBJECTIVE

Complications contribute largely to the economic gravity of diabetes mellitus (DM). How they arise and are treated differs substantially between countries. This paper assesses the total annual, direct, and indirect cost of severe hypoglycemia events (SHEs) in nine European countries: Bulgaria, Croatia, the Czech Republic, Greece, Hungary, Macedonia/the former Yugoslav Republic of Macedonia (MK), Poland, Slovenia, and Spain.

METHODS

Data was collected on epidemiology, treatment structure, SHE-driven resource consumption, and unit costs. Two systematic reviews-on the SHE rates and the resources used for treatment-and data on the days-of-work lost due to SHE along with salaries and employment rates were used. The total SHE cost in each country was calculated and how the differences are driven by individual parameters was analysed.

RESULTS

The annual costs of SHEs varied in absolute terms from €379,951.25 in MK up to €58,429,684.40 in Spain, or-when expressed per one drug-treated DM patient-from €5.47 in Bulgaria up to €17.74 in Spain. Indirect cost constituted between 6.01% (MK) and 26.49% (Hungary) of the total cost. The differences between countries are driven mostly by the cost of treating a single event, and this is related to general differences in prices.

LIMITATIONS

The main limitation is the lack of good quality data in some parts, and the necessity to use mean-value imputations, experts' opinions, etc. Additionally, we only considered DM treatment as the SHE driver, while other elements, e.g. style of living, may contribute substantially.

CONCLUSIONS

A common framework can be applied to estimate the economic burden of SHE in various countries, allowing one to identify the drivers of differences in cost. Treating DM is complex, and so no resolute conclusions ought to be drawn as to whether SHE management is better in one country than another.