Sebastian Gruhn

Sebastian Gruhn

orcid

Research Focus & Metrics

Academic Career Length

5Years (2022-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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25 February 2022 in Vaccine
Verified
Journal Article
Open access
SGSebastian Gruhn
Sebastian Gruhn
JWJ. Witte
J. Witte
WGW. Greiner
W. Greiner
ODO. Damm
O. Damm
MDM. Dietzsch
M. Dietzsch
MKM. Knuf
M. Knuf
Invasive meningococcal disease (IMD) is a notifiable disease in Germany and other European countries. Due to the high lethality of the disease and the risk of long-term consequences, IMD prevention is of high public health relevance despite the low number of cases in the population. This study aims to describe key epidemiological and economic parameters of IMD in Germany to support national decision-making processes for implementing enhanced prevention measures. Based on a systematic literature review in PubMed and EMBASE, all publications on the burden of disease and costs of IMD published up to May 2020 were evaluated. Additionally, notification data were used to report the annual case numbers and incidence of IMD in Germany until the end of 2019. Thirty-six studies were included, of which 35 reported data on the epidemiological burden of disease and three reported data on economic aspects of IMD. The type of reported endpoints and results on the incidence of IMD differed widely by reporting year, population, and data source used. Most of the data are reported without specific information about a serogroup. Data on the economic burden of disease and healthcare resource use are scarce. Based on mandatory notification data, a decrease in the incidence of notified IMD cases has been observed since 2004. Currently, the nationwide annual incidence in Germany is at 0.3 cases per 100,000 persons and has gradually decreased. While the overall decline is mainly attributable to MenB, cases with MenY and MenW are the only ones that have increased on a low level in recent years. While IMD is a rare disease, high direct and indirect costs illustrate the relevance of the disease for patients, caregivers, as well as for the health care system. Future research should concentrate on quantifying the long-term economic burden and indirect costs of meningococcal disease. Integrated IMD surveillance with isolate characterisation remains crucial to inform public health policies.

4 April 2024 in Infectious Diseases and Therapy
Verified
Journal Article
Open access
PDF file
SGSebastian Gruhn
Sebastian Gruhn
MBManuel Batram
Manuel Batram
MWMoritz Wick
Moritz Wick
ELEdith Langevin
Edith Langevin
SSStefan Michael Scholz
Stefan Michael Scholz
ODOliver Damm
Oliver Damm
Introduction Invasive meningococcal disease (IMD) causes significant mortality and long-term sequelae. This study assesses the potential public health impact of adolescent vaccination strategies employing MenACWY and MenC vaccines in Germany, where the existing meningococcal immunisation programme predominantly involves MenC administration in toddlers. Methods A dynamic transmission model was developed to simulate the carriage of five meningococcal serogroup compartments (AY/B/C/W/Other) from 2019 until 2060 within 1-year age groups from 0 to 99 years of age. IMD cases were estimated based on case-carrier ratios. The model considered vaccine effectiveness against carriage acquisition and IMD. Results The model predicts that introducing MenACWY adolescent vaccination could lead to a considerable reduction in IMD incidence, with the potential to prevent up to 65 cases per year and a cumulative total of 1467 cases by 2060. This decrease, mainly driven by herd effects, would result in a reduction of IMD incidence across all age groups, regardless of vaccination age. Furthermore, implementing MenACWY vaccination in adolescents is projected to decrease annual MenACWY-related IMD mortality by up to 64%, equating to an overall prevention of 156 IMD deaths by 2060. These protective outcomes are expected to culminate in approximately 2250 life years gained (LYG) throughout the model's projected time horizon. In contrast, the adoption of MenC vaccination in adolescents is predicted to have minimal influence on both IMD incidence and mortality, as well as on LYG. Conclusion The results of this study demonstrate that implementing MenACWY vaccination for adolescents in Germany is likely to notably reduce IMD incidence and mortality across age groups. However, the introduction of MenC adolescent vaccination shows only limited impact. Considering the extensive healthcare resources typically required for IMD management, these findings suggest the potential for economic benefits associated with the adoption of MenACWY adolescent vaccination, warranting further cost-effectiveness analysis.

6 June 2024 in Healthcare
Verified
Journal Article
Open access
PDF file
JDJuliane Andrea Duevel
Juliane Andrea Duevel
SGSebastian Gruhn
Sebastian Gruhn
JGJohn Grosser
John Grosser
SESvenja Elkenkamp
Svenja Elkenkamp
WGWolfgang Greiner
Wolfgang Greiner
Strokes remain a leading cause of death and disability worldwide. The STROKE OWL study evaluated a novel case management approach for patients with stroke (modified Rankin Scale 0–4) or transient ischemic attack (TIA) who received support across healthcare settings and secondary prevention training from case managers for one year. The primary aim of this quasi-experimental study was a reduction in stroke recurrence. Here, we report the results of a health economic analysis of the STROKE OWL study, conducted in accordance with CHEERS guidelines. The calculations were based on claims data of cooperating statutory health insurance companies. In addition to a regression analysis for cost comparison, the incremental cost-effectiveness ratio was determined, and a probabilistic sensitivity analysis was carried out. In total, 1167 patients per group were included in the analysis. The intervention group incurred 32.3% higher direct costs (p < 0.001) than the control group. With a difference of EUR 1384.78 (95% CI: [1.2384–1.4143], p < 0.0001) and a 5.32% increase in hazards for the intervention group (HR = 1.0532, 95% CI: [0.7869–1.4096], p = 0.7274) resulting in an ICER of EUR 260.30, we found that the case management intervention dominated in the total stroke population, even for an arbitrarily high willingness to pay. In the TIA subgroup, however, the intervention was cost-effective even for a low willingness to pay. Our results are limited by small samples for both TIA and severe stroke patients and by claims data heterogeneity for some cost components, which had to be excluded from the analysis. Future research should investigate the cost-effectiveness of case management interventions for both severe stroke and TIA populations using appropriate data.

22 July 2022 in Graefe's Archive for Clinical and Experimental Ophthalmology
Verified
Journal Article
Open access
PDF file
KOKristina Oldiges
Kristina Oldiges
MSMaren Steinmann
Maren Steinmann
JDJuliane Andrea Duevel
Juliane Andrea Duevel
SGSebastian Gruhn
Sebastian Gruhn
RDRaphael Diener
Raphael Diener
NENicole Eter
Nicole Eter
Purpose: The SALUS study aims to improve the healthcare situation for glaucoma patients in Germany. In order to detect diurnal intraocular pressure (IOP) fluctuations, inpatient monitoring of IOP in an eye hospital for a minimum of 24 h is the current standard. SALUS assesses the benefits of a new form of outpatient care, where IOP can be measured by the patients themselves at home using a self-tonometer. This approach should promote the patient’s health competence and empowerment within the healthcare system while reducing treatment costs. Methods: The SALUS study is a randomized controlled, open non-inferiority trial, alongside an economic analysis, determining whether outpatient monitoring of IOP with self-tonometry is at least as effective as current standard care and would reduce treatment costs. Participants (n = 1980) will be recruited by local ophthalmologists in the area of Westphalia-Lippe, Germany, and randomized to receive 7-day outpatient or 24-h inpatient monitoring. Participants in both study arms will also receive 24-h blood pressure monitoring. Furthermore, patient data from both study groups will be collected in an electronic case file (ECF), accessible to practitioners, hospitals, and the study participants. The primary endpoint is the percentage of patients with IOP peaks, defined as levels 30% above the patient-specific target pressure. Data will also be collected during initial and final examinations, and at 3, 6, and 9 months after the initial examination. Results: The study implementation and trial management are represented below. Conclusion: SALUS is a pioneering prospective clinical trial focused on the care of glaucoma patients in Germany. If SALUS is successful, it could improve the healthcare situation and health literacy of the patients through the introduction of various telemedical components. Furthermore, the approach would almost certainly reduce the treatment costs of glaucoma care. Trial registration: ClinicalTrials.gov ID: NCT04698876, registration date: 11/25/2020. DRKS-ID: DRKS00023676, registration date: 11/26/2020.

28 March 2025 in Infectious Diseases and Therapy
Verified
Journal Article
Open access
PDF file
SGSebastian Gruhn
Sebastian Gruhn
MBManuel Batram
Manuel Batram
MWMoritz Wick
Moritz Wick
ELEdith Langevin
Edith Langevin
SSStefan Michael Scholz
Stefan Michael Scholz
ODOliver Damm
Oliver Damm
Introduction Invasive meningococcal disease (IMD) is a rare but serious condition caused by Neisseria meningitidis, with rising cases of serogroups W and Y in Germany. Currently, routine vaccination in Germany includes MenC vaccination in toddlers, and as of early 2024, MenB vaccination has been recommended in infancy. MenACWY vaccination, however, is currently only recommended for high-risk individuals. This study evaluates the potential public health impact and cost-effectiveness of introducing routine adolescent MenACWY or MenC vaccination in Germany. Methods This study presents a health economic evaluation based on a previously published dynamic transmission model, which simulates the introduction of MenACWY vaccination in adolescents in Germany. The evaluation incorporates costs and quality-adjusted life years (QALYs), and is conducted from a societal perspective. Deterministic and probabilistic sensitivity analyses were performed to assess the robustness of the findings and to account for parameter uncertainty. Results The introduction of adolescent MenACWY vaccination was estimated to prevent 1467 IMD cases and 156 deaths by 2060, leading to a total gain of 2333 QALYs. The MenACWY vaccination strategy was associated with incremental costs of approximately €306 million, resulting in an incremental cost-effectiveness ratio (ICER) of €131,150 per QALY gained. Scenarios assuming higher levels of carriage protection reduced the ICER to as low as €76,000 per QALY. In contrast, adolescent MenC vaccination had a comparatively minor impact on IMD incidence and mortality, with ICERs exceeding €1 million per QALY. Sensitivity analyses highlighted the significant influence of assumed vaccine carriage protection and duration of protection on the ICER. Conclusions Adolescent MenACWY vaccination in Germany has the potential to reduce the incidence and mortality of IMD, particularly from serogroups W and Y. Although the cost-effectiveness of the strategy depends on several assumptions, particularly the extent of carriage protection, the ICER for MenACWY introduction appears favorable.