Table 1.

Hierarchical regression analysis with the number of learning cards and test questions (MCQs; Step 1) and the interaction between the two (Step 2) as independent variables, and the percentage of correct answers as dependent variable.

		B	SE B	β	ΔR 2
Step 1					.067a
	Learning cards	0.747	0.038	.14a	—b
	Test questions	1.094	0.054	.20a	—
Step 2					.001a
	Learning cards × Test questionsc	0.064	0.016	.05a	—

^aThis denotes a value with P<.001.

^bNot applicable.

^cLearning cards and test questions (MCQs) were z-standardized for the analysis.