Table 4.

P values from the Wilcoxon signed-rank test for mean imputation.

Missing rate	MLPa	RFb	MICEc	EMd	KNNe	SQMI-R
5%	.86	<.001	.005	<.001	.463	<.001
10%	.12	<.001	<.001	<.001	.668	<.001
20%	.07	<.001	.375	<.001	.013	<.001
30%	.001	<.001	<.001	<.001	<.001	<.001
40%	.06	<.001	.252	<.001	<.001	<.001
50%	.06	<.001	<.001	<.001	<.001	<.001

^aMLP: multilayer perceptron.

^bRF: random forest.

^cMICE: multiple imputations by chained equations.

^dEM: expectation-maximization.

^eKNN: k-nearest neighbor.