Stephanie Knippschild

Dr. Stephanie Knippschild

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Research Focus & Metrics

Academic Career Length

8Years (2019-Present)

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

Representative Publications

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KBKorbinian Benz
Korbinian Benz
CBChristine Baulig
Christine Baulig
SKStephanie Knippschild
Stephanie Knippschild
FSFrank Peter Strietzel
Frank Peter Strietzel
NHNicolas Hunzelmann
Nicolas Hunzelmann
JJJochen Jackowski
Jochen Jackowski
Background: Systematic scleroderma is a rare chronic autoimmune disease of unknown aetiology. The aim of this study was to identify the prevalence of orofacial pathognomonic conditions in patients with systemic scleroderma using only randomised prospective studies that investigated the treatment of oral and maxillofacial changes, highlighted associations between the disease and Sjogren’s syndrome, and/or analysed the effect of oral hygiene. Methods: The literature was systematically reviewed based on Cochrane Library, EMBASE, PubMed, Scopus, and Web of Science articles published up to March 2020. The primary endpoint of this analysis was defined as an estimation of the prevalence of oral mucosal changes in different areas of the oral cavity (oral mucosa, tongue, lip, periodontal status, bones, and other regions) in patients suffering from scleroderma. Therefore, a systematic literature search (Cochrane Library, EMBASE, PubMed, Scopus, and Web of Science) was conducted and limited by the publication date (1950-03/2020) and the publication language (English). Extracted frequencies were pooled using methods for meta-analysis. In order to obtain the highest level of evidence, only prospective study reports were considered to be eligible. Results: After full-text screening, 14 (766 patients) out of 193 publications were eligible for the final analysis. Twelve studies produced reliable results in the final data sets. Calculation of the pooled effect estimate (random effects model) revealed a prevalence of 57.6% (95% CI: 40.8–72.9%) for the main area “lip”. For the area “oral mucosa”, a prevalence of 35.5% (95% CI: 15.7–62.0%) was calculated. The prevalence for “other regions” was only based on studies with salivary changes and was calculated to be 25.4% (95% CI: 14.2–41.3%). Conclusion: The most pathognomonic conditions in the orofacial region in patients with systemic scleroderma affect the lips, oral mucosa, and salivary glands.

27 January 2023 in F1000Research
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LHLuisa Haß
Luisa Haß
STSabrina Tulka
Sabrina Tulka
TTThaddäus Tönnies
Thaddäus Tönnies
AHAnnika Hoyer
Annika Hoyer
RPRebecca Palm
Rebecca Palm
RBRalph Brinks
Ralph Brinks
Background: With the growing number of older people, the number of people in need of long-term care is increasing, too. Official statistics only report on the age-specific prevalence of long-term care. Therefore, there is no data on the age- and sex-specific incidence of the need for care at the population level for Germany available. Methods: Analytical relationships between age-specific prevalence, incidence rate, remission rate, all-cause mortality, and mortality rate ratio are used to estimate the age-specific incidence of long-term care among men and women in 2015. The data is based on the official prevalence data from the nursing care statistics for the years 2011 to 2019 and official mortality rates from the Federal Statistical Office. For Germany, there is no data on the mortality rate ratio of people with and without a need for care, which is why we use two extreme scenarios that were obtained in a systematic literature search to estimate the incidence. Results: The age-specific incidence is about 1 per 1000 person-years (PY) in men and women at the age of 50 and increases exponentially up to the age of 90. Up to about the age of 60, men have a higher incidence rate than women. Thereafter, women have a higher incidence. At the age of 90, women and men have an incidence rate of 145 to 200 and 94 to 153 per 1000 PY, respectively, depending on the scenario. Conclusion: We estimated the age-specific incidence of the need for long-term care for women and men in Germany for the first time. We observed a strong increase, leading to a huge number of people in need of long-term care in higher age groups. It is to be expected that this will result in an increased economic burden and a further increased need for nursing and medical staff.

19 August 2023 in Rheumatology International
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JWJiancong Wang
Jiancong Wang
STSabrina Tulka
Sabrina Tulka
SKStephanie Knippschild
Stephanie Knippschild
MSMatthias Schneider
Matthias Schneider
JDJörg H. W. Distler
Jörg H. W. Distler
Philipp SewerinPhilipp Sewerin
Philipp Sewerin
The population-based prevalence of psoriatic arthritis (PsA) is still unclear and not well described globally. The aim of this study was to conduct a population-based prevalence projection and provide long-term future estimations of PsA patients in Germany until 2050, using the illness–death model and based on historical data. We analyzed the national statutory health insurance data of 65 million population in the German Institute for Medical Documentation and Information between January 2009 and December 2012. We constructed an estimation of the PsA burden among the German population using the relevant epidemiological parameters to project the numbers of patients with PsA in Germany until 2050 under five possible scenarios by varying the incidence and mortality. The overall conservatively estimated prevalence of PsA in Germany in 2019 was 0.31% (95% CI 0.28–0.36%). Women contribute a higher prevalence than men in all five scenarios. In the assumed scenarios with increased incidence, the prevalence of PsA at 60 years of age could rise from 1% in 2019 to more than 3% in 2050 for both genders, with the increase particularly pronounced for women, reaching around 3.5%. However, in the assumed scenarios with decreasing incidence, the prevalence curve may flatten and begin a decreasing trend from 2035 to 2050 for both genders, achieving a prevalence of less than 1% in 2050. Our research is to generate assumed population-based data on PsA in Germany that can serve as a reference for public health stakeholders to prepare an optional intervention. We would expect worryingly high numbers in the coming decades if preventive strategies are not implemented. In the long term, it will be necessary to implement preventive strategies to identify predictors and treat psoriasis symptoms early in order to delay or even prevent the transition of psoriasis to PsA.

13 August 2021 in BMJ Open
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SKStephanie Knippschild
Stephanie Knippschild
JLJeremias Loddenkemper
Jeremias Loddenkemper
STSabrina Tulka
Sabrina Tulka
CLChristine Loddenkemper
Christine Loddenkemper
CBChristine Baulig
Christine Baulig
Objectives Access to full texts of randomised controlled clinical trials (RCTs) is often limited, so brief summaries of studies play a pivotal role. In 2008, a checklist was provided to ensure the transparency and completeness of abstracts. The aim of this investigation was to estimate adherence to the reporting guidelines of the Consolidated Standards of Reporting Trials (CONSORT) criteria for abstracts (CONSORT-A) in RCT publications. Primary endpoint Assessment according to the percentage of compliance with the 16 CONSORT-A criteria per study. Materials and methods This study is based on a full survey (212 RCT abstracts in dental implantology, PubMed search, publication period 2014–2016, 45 journals, median impact factor: 2.328). In addition to merely documenting ‘adherence’ to criteria, the authors also assessed the ‘complete implementation’ of the requested information where possible. The collection of data was performed independently by two dentists, and a final consensus was reached. The primary endpoint was evaluated by medians and quartiles. Additionally, a Poisson regression was conducted to detect influencing factors. Results A median of 50% (Q1–Q3: 44%–63%) was documented for the 16 criteria listed in the CONSORT-A statement. Nine of the 16 criteria were considered in fewer than 50% of the abstracts. ‘Correct implementation’ was achieved for a median of 43% (Q1–Q3: 31%–50%) of the criteria. An additional application of Poisson regression revealed that the number of words used had a locally significant impact on the number of reported CONSORT criteria for abstracts (incidence rate ratio 1.001, 95% CI 1.001 to 1.002). Conclusion Transparent and complete reporting in abstracts appears problematic. A limited word count seems to result in a reduction in necessary information. As current scientific knowledge is often not readily available in the form of publications, abstracts constitute the primary basis for decision making in clinical practice and research. This is why journals should refrain from limiting the number of words too strictly in order to facilitate comprehensive reporting in abstracts.

12 February 2024 in Journal of Clinical Medicine
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DKDario Knorr
Dario Knorr
Dirk BandorskiDirk Bandorski
Dirk Bandorski
HBHarilaos Bogossian
Harilaos Bogossian
KIKonstantinos Iliodromitis
Konstantinos Iliodromitis
FSFabian Schiedat
Fabian Schiedat
SBSpiridon Botsios
Spiridon Botsios
Background: Cephalic vein cutdown (CVC) and subclavian vein puncture (SVP) are the most commonly used access sites for transvenous lead placement of cardiac implantable electronic devices (CIEDs). Limited knowledge exists about the long-term patency of the vascular lumen housing the leads. Methods: Among the 2703 patients who underwent CIED procedures between 2005 and 2013, we evaluated the phlebographies of 162 patients scheduled for an elective CIED replacement (median of 6.4 years after the first operation). The phlebographies were divided into four stenosis types: Type I = 0%, Type II = 1–69%, Type III = 70–99%, and Type IV = occlusion. Due to the fact that no standardized stenosis categorization exists, experienced physicians in consensus with the involved team made the applied distribution. The primary endpoint was the occurrence of stenosis Type III or IV in the CVC group and in the SVP group. Results: In total, 162 patients with venography were enrolled in this study. The prevalence of high-degree stenosis was significantly lower in the CVC group (7/89, 7.8%) than in the SVP group (15/73, 20.5%, p = 0.023). In the CVC group, venographies showed a lower median stenosis (33%) than in the SVP group (median 42%). Conclusions: The present study showed that the long-term patency of the subclavian vein is higher after CVC than after SVP for venous access in patients with CIED.

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MSMarvin Scholten
Marvin Scholten
SNSotirios Nedios
Sotirios Nedios
ZKZana Karosiene
Zana Karosiene
FHFuad Hasan
Fuad Hasan
BLBernd Lemke
Bernd Lemke
HBHarilaos Bogossian
Harilaos Bogossian
Background/Objective: Previous studies have indicated a higher incidence of complications associated with dual-lead devices compared to single-lead devices. This retrospective study aimed to investigate the effect of lead count and other factors on peri/postoperative complications for new pacemaker (PM) or implantable cardioverter-defibrillator (ICD) implantations in a representative German cohort. Methods: In accordance with quality assurance (QS) requirements, all hospitals in Germany collect patient-specific data on cardiac device implantation. We utilized the QS database from North Rhine-Westphalia to analyze data from 169,547 patients who underwent PM (n = 137,208) or ICD (n = 32,339) implantation between 2010 and 2014. The primary endpoint was the incidence of perioperative complications in the PM and ICD groups, analyzed separately for single- and dual-lead systems. Regression analysis was performed to identify specific risk factors and the effect of lead number on complications. Results: In the PM group, patients with dual-lead devices experienced significantly more complications than those with single-lead devices (3.27% vs. 2.85%, p < 0.001), largely driven by lead dislocations. In the ICD group, no significant difference in complication rates was observed between single-lead and dual-lead devices (1.39% vs. 1.46%, p = 0.635). The risk of complications was over twice as high for PM implantation compared to ICD implantation (3.17% vs. 1.42%). Patients with intrahospital complications faced a significantly higher risk of mortality than those without complications (PM: 4.5% vs. 1.6%; ICD: 3.9% vs. 0.5%). Independent risk factors for complications and mortality were identified in both groups, with a notable increase in the risk of intrahospital mortality associated with complications. Conclusions: Complications of dual-lead PM implantations are higher than single-lead procedures, mostly due to lead dislocations. Such a difference, though, was not observed in ICD implantations. Our findings may help optimize procedural strategies to improve patient safety, especially in PM implantations.