New open-access article published on the effect of number of clusters and cluster size on statistical power and Type I error rates when testing random effects variance components in multilevel or hierarchical linear and logistic regression models: tandfonline.com/doi/full/10.10…

New published article on using the bootstrap with multilevel (hierarchical) logistic regression models. Includes a novel parametric bootstrap procedure to estimate the standard errors of the predicted cluster-specific random effects.: tandfonline.com/doi/full/10.10….

New article on graphical calibration curves for models for time-to-event (survival) outcomes: onlinelibrary.wiley.com/doi/full/10.10…. Also describe the integrated calibration index (ICI) for assessing calibration of survival models.

New paper using simulations based on empirical analyses to compare the performance of statistical models with machine learning methods under six different data-generating processes (based on a different stat or ML model): journals.sagepub.com/doi/full/10.11… with Frank Harrell and Ewout Steyerberg

New paper on using the Fine-Gray subdistribution hazard competing risk regression model to estimate all the cause-specific event probabilities: total failure probability can exceed 1 for some subjects at some times: doi.org/10.1002/sim.90… . With Ewout Steyerberg and Hein Putter

New paper published in Statistics in Medicine with Donald Rubin and Neal Thomas on multiply-imputing missing control binary potential outcomes following propensity score-matching when estimating risk differences: onlinelibrary.wiley.com/doi/full/10.10…

New paper published in Neurology. An introduction to propensity score methods in clinical research in neurology. With Amy Yu, MD, Moira Kapral , and Manav Vyas. n.neurology.org/content/97/18/….

New open access tutorial article published in Statistics in Medicine: Using fractional polynomials and restricted cubic splines to model non-proportional hazards or time-varying covariate effects in the Cox regression model. onlinelibrary.wiley.com/doi/10.1002/si…

New paper on assessing the calibration of competing risk regression models: rdcu.be/cFbpf with Hein Putter , Daniele Giardiello, and David van Klaveren.

The iterative bisection procedure: newly-published open access paper describing a useful tool to determine parameter values for Monte Carlo simulations: link.springer.com/epdf/10.1186/s… #Statstwitter

New paper in Statistics in Medicine: how to impute variables that are used in inclusion/exclusion criteria and that are independent variables in the analysis model of scientific interest: onlinelibrary.wiley.com/doi/epdf/10.10… with Daniele Giardiello and Stef van Buuren. #statstwitter

New open access paper comparing target estimands for five sets of propensity score-based weights: ATE weights, ATT weights, overlap weights, matching weights, and entropy weights: onlinelibrary.wiley.com/doi/10.1002/pd… #statstwitter

New open access paper in SMMR comparing predictive mean matching (PMM) with logistic regression for imputing missing binary variables when using multiple imputation: journals.sagepub.com/doi/10.1177/09…. PMM had comparable performance, but required less processing time.

New open access paper in Statistical Methods in Medical Research on the performance of marginal structural models (MSMs) for estimating risk differences and relative risks using weighted GLMs: journals.sagepub.com/doi/epub/10.11…. #propensityscore #statstwitter

Just published in JAMA: an introductory tutorial: Accounting for Competing Risks in Clinical Research with ⁦Hein Putter⁩ and Maria Ibrahim. jamanetwork.com/journals/jama/…

New paper on the effect of number of clusters and magnitude of within‐cluster homogeneity in outcomes on the performance of four variance estimators for a marginal multivariable Cox regression model fit to clustered data in observational research onlinelibrary.wiley.com/doi/10.1002/si…

New open access paper on multiple imputation with competing risk outcomes using complex clinically realistic simulations: link.springer.com/epdf/10.1007/s…

New paper on statistical power to detect violation of the proportional hazards assumption when using the Cox regression model. Power may often be low to detect violation of the proportional hazards assumption: tandfonline.com/doi/full/10.10…

New paper on covariate balance diagnostics for use with the Generalized Propensity Score (GPS) for use with quantitative or continuous exposures: journals.sagepub.com/doi/full/10.11…. Open Access in Statistical Methods in Medical Research.