@article {chipman2017simpson,
	title = {Simpson{\textquoteright}s paradox in the integrated discrimination improvement},
	journal = {Statistics in medicine},
	volume = {36},
	number = {28},
	year = {2017},
	pages = {4468{\textendash}4481},
	publisher = {Wiley Online Library},
	author = {Chipman, J and Braun, D}
}
