Occurrence and transmission potential of asymptomatic and presymptomatic SARS-CoV-2 infections: A living systematic review and meta-analysis. by Diana Buitrago-Garcia, Dianne Egli-Gany, Michel J Counotte, Stefanie Hossmann, Hira Imeri, Aziz Mert Ipekci, Georgia Salanti, Nicola Low

“…Limitations of the review include that most included studies were not designed to estimate the proportion of asymptomatic SARS-CoV-2 infections and were at risk of selection biases; we did not consider the possible impact of false negative RT-PCR results, which would underestimate the proportion of asymptomatic infections; and the database does not include all sources.…”
Get full text

High-Risk Hepatocellular Carcinoma: Hepatic Arterial Infusion Chemotherapy versus Transarterial Chemoembolization by Zhang B, Huang B, Yang F, Yang J, Kong M, Wang J, Xiang Y, Wang K, Peng R, Yang K, An C, Yan D

“…The study used propensity score matching (PSM) to reduce selectivity bias. Overall survival (OS) and progression-free survival (PFS) were compared using Kaplan‒Meier curves with the Log rank test. …”
Get full text

Epidemiologia do transtorno obsessivo-compulsivo: uma revisão Epidemiology of obsessive-compulsive disorder: a review by Albina Rodrigues Torres, Maria Cristina Pereira Lima

“…<br>Epidemiological surveys are important because clinical samples are subject of several selection biases. Sociodemographic factors and clinical aspects of the morbid condition itself influence help seeking behaviors. …”
Get full text

Self-Reported Data and Physician-Reported Data in Patients With Eosinophilic Granulomatosis With Polyangiitis: Comparative Analysis by Irena Doubelt, Jason M Springer, Tanaz A Kermani, Antoine G Sreih, Cristina Burroughs, David Cuthbertson, Simon Carette, Nader A Khalidi, Curry L Koening, Carol Langford, Carol A McAlear, Larry W Moreland, Paul A Monach, Dianne G Shaw, Philip Seo, Ulrich Specks, Kenneth J Warrington, Kalen Young, Peter A Merkel, Christian Pagnoux

“…However, observed differences between patient and physician reports imply the potential occurrence of selection biases. These results support the use of patient-reported data in EGPA but also the need for careful consideration of disease-specific definitions for the study of EGPA and how patient- and physician-reported data are collected. …”
Get full text

Parent control and IJV performance in China : an examination from local partner’s managerial perspective = 합작 모기업의 경영통제가 조인트벤처 경영 성과에 미치는 영향 : 중국 현지 모기업의 경영자 관점에서... by Hwang, Yong-Sik, Chen, Dong, Park, Seung Ho

“…Second, the study sample was composed of relatively big IJVs with an average age of 10, which might be subject to selection biases. It is likely that the findings are more applicable to long-standing partnerships instead of relatively new ones. …”
Get full text