Matthias Sand

The hidden athlete: exploring work and performance ability of professional dancers through a mixed-method-approach

Hannah Sophia Hofmann, Cleo Kramer, Nina Marie Schmidt, Johanna Lachmann et autres

BACKGROUND: Despite the high physical, psychological, and artistic demands, professional dancers still lack holistic and interdisciplinary workplace support comparable to elite sport. This study examines challenges and opportunities within the work ability framework for implementing measures in theaters to maintain work ability …

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A Comparative Analysis on Work Ability and Influencing Factors among Professional Freelance and Company Dancers

Hannah Sophia Hofmann, Nina Marie Schmidt, Johanna Lachmann, Matthias Sand et autres

Introduction: There are similarities in physical and psychological demands, but differences in working conditions between professional freelance and company dancers. The purpose of this study is to examine the work ability of professional dancers working in both of these fields and to …

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Strategies to Minimize Selection Bias in Digital Population-Based Studies in Sport and Health Sciences: Methodological and Empirical Insights from the COMO Study

Claudia Niessner, Franziska Reiß, Matthias Sand, Fredrik Knirsch et autres

Objectives: Population-based surveys increasingly face challenges of declining response rates and selective participation, particularly since the COVID-19 pandemic. This article presents the COMO study’s design and sampling approach and discusses strategies to minimize selection bias in digital health surveys, focusing on participation …

Patient-Specific Factors to Differentiate Between Branchial Cleft Cysts and CUP Syndrome: A 10 Year Unicenter Study

Christina Sauter, Matthias Sand, Peter K. Plinkert, Karim Plath et autres

Objectives: Due to its generally-poor prognosis and varied clinical presentation, cervical cancer of unknown primary (CUP) poses particular challenges for clinical and imaging diagnosis. Differential diagnoses of CUP syndrome may also include lateral cervical cysts. When a benign neck cyst is initially …

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The baseline examinations of the German National Cohort (NAKO): recruitment protocol, response, and weighting

Stefan Rach, Matthias Sand, Achim Reineke, Heiko Becher et autres

The German National Cohort (NAKO) is the largest population-based epidemiologic cohort study in Germany and investigates the causes of the most common chronic diseases. Between 2014 and 2019, a total of 1.3 million residents aged 20-69 years from 16 German regions were …

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Differenzierung von benignen und malignen Halszysten – eine diagnostische Herausforderung

Christina Sauter, Matthias Sand, Karim Plath, Michaela Plath

A cystic lateral neck mass in adults represents a major challenge, as it can be difficult to distinguish between benign and malignant lesions. The incidence of carcinoma in initially benign treated neck cysts is estimated to be as high as 24%. The …

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Survey Data: Survey Weighting [Slide deck]

Matthias Sand

This presentation gives an introduction to survey weights, sample design, design-based inference, nonresponse and calibration, as well as altering weights (rescaling and truncation). This presentation is the third part of a set of presentations on the topic of "Survey Data: Remedies & …

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Survey Data: Survey Weighting [Slide deck]

Matthias Sand

This presentation gives an introduction to survey weights, sample design, design-based inference, nonresponse and calibration, as well as altering weights (rescaling and truncation). This presentation is the third part of a set of presentations on the topic of "Survey Data: Remedies & …

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Kurzfristige Lebensqualitätsbewertung nach Nasennebenhöhlenoperation bei chronischer Rhinosinusitis

Michaela Plath, Matthias Sand, Mark-Philip Gruchlik, Carlo Cavaliere et autres

BACKGROUND: Chronic rhinosinusitis (CRS) has a negative impact on health-related quality of life (HRQoL). Functional endoscopic sinus surgery (FESS) is the treatment of choice for those not responding to medical treatments. To date, the short-term effects of FESS on HRQoL are still …

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Correction: Comparison of Four Active SARS-CoV-2 Surveillance Strategies in Representative Population Sample Points: Two-Factor Factorial Randomized Controlled Trial

Andreas Deckert, Simon Anders, Ivonne Morales, Manuela De Allegri et autres

[This corrects the article DOI: 10.2196/44204.].

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Correction: Comparison of Four Active SARS-CoV-2 Surveillance Strategies in Representative Population Sample Points: Two-Factor Factorial Randomized Controlled Trial (Preprint)

Andreas Deckert, Simon Anders, Ivonne Morales, Manuela De Allegri et autres

UNSTRUCTURED REMOVE

Normative data for interpreting the SNOT-22

Michaela Plath, Matthias Sand, Carlo Cavaliere, Peter K. Plinkert et autres

Objectives: The Sino-Nasal Outcome Test 22 (SNOT-22) is a validated patient-reported outcome instrument to evaluate the health-related quality of life (HRQoL) in patients with chronic rhinosinusitis (CRS). There are no published normative SNOT-22 scores, limiting its interpretation. Methods: Symptom scores from 1,000 …

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