The Mann-Kendall-Sneyers test to identify the change points of COVID-19 time series in the United States by Xiang Chen, Hui Wang, Weixuan Lyu, Ran Xu

“…Abstract Background One critical variable in the time series analysis is the change point, which is the point where an abrupt change occurs in chronologically ordered observations. Existing parametric models for change point detection, such as the linear regression model and the Bayesian model, require that observations are normally distributed and that the trend line cannot have extreme variability. …”
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Multimodality 3D image fusion with live fluoroscopy reduces radiation dose during catheterization of congenital heart defects by Dimitri Buytaert, Kristof Vandekerckhove, Joseph Panzer, Laurence Campens, Klaus Bacher, Daniël De Wolf, Daniël De Wolf

“…Then, we matched the number of tests and controls per subgroup using chronological ordering or propensity score matching. Subsequently, we combined the matched subgroups into larger subgroups of similar procedure type, keeping subgroups with at least 10 test and 10 control cases. …”
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