An introduction to inverse probability of treatment weighting in observational researchNicholas C Chesnaye, Kitty J. Jager, Vianda S Stel et al.|Clinical Kidney Journal|2021Cited by 877
External validation of prognostic models: what, why, how, when and where?Chava L. Ramspek, Merel van Diepen, Kitty J. Jager et al.|Clinical Kidney Journal|2020Cited by 808
When do we need competing risks methods for survival analysis in nephrology?Marlies Noordzij, Kitty J. Jager, Karen Leffondré et al.|Nephrology Dialysis Transplantation|2013Cited by 674
Confounding: What it is and how to deal with itKitty J. Jager, Friedo W. Dekker, Carmine Zoccali et al.|Kidney International|2007Cited by 480
Sample size calculations: basic principles and common pitfallsM. Noordzij, Kitty J. Jager, Giovanni Tripepi et al.|Nephrology Dialysis Transplantation|2010Cited by 447