Table 3.

Comparison of cognitive function according to digital device exposure.

Cognitive function and variable			Group Aa, n=162, median (IQR)		Group Bb, n=70, median (IQR)		Total, N=232, median (IQR)		P value		Effect size (r)
Attention and psychomotor speed
	MOTMLc (ms)d	781.1 (690.8-928.9)		765.6 (680.5-968.1)		776.1 (685.6-953.7)		.93		–0.004
	RTIFMDRTe (ms)d	517.0 (462.0-578.0)		495.8 (460.0-551.0)		512.0 (461.0-566.0)		.29		0.001
	RTIFMDMTf (ms)d	271.5 (232.0-325.5)		285.0 (238.5-342.5)		275.0 (235.0-330.5)		.11		0.007
Memory
	PRMPCIg (%)	75.0 (58.3-91.7)		70.8 (50.0-83.3)		75.0 (50.0-91.7)		.52		–0.003
	PRMPCDh (%)	66.7 (50.0-75.0)		58.3 (50.0-75.0)		66.7 (50.0-75.0)		.08		0.009
	SSPFSLi (n)	4.0 (3.0-5.0)		4.0 (3.0-5.0)		4.0 (3.0-5.0)		.99		–0.004
Executive function
	SWMBE468j (n)d	24.0 (20.0-28.0)		25.0 (22.0-28.0)		24.0 (20.0-28.0)		.18		0.003
	SWMBE4k (n)d	2.0 (1.0-3.0)		2.0 (2.0-3.0)		2.0 (1.0-3.0)		.01		0.023
	SWMBE6l (n)d	7.0 (5.0-9.0)		7.0 (6.0-9.0)		7.0 (5.0-9.0)		.60		–0.003
	SWMBE8m (n)d	14.5 (12.0-17.0)		15.0 (13.0-17.0)		15.0 (13.0-17.0)		.61		–0.003
	SWMSn (n)d	12.0 (10.0-58.3)		10.0 (9.0-12.0)		11.0 (10.0-50.0)		.002		0.036

^aDigital device exposure group.

^bDigital device nonexposure group.

^cMOTML: motor screening task mean latency.

^dSmaller values indicate more positive changes.

^eRTIFMDRT: reaction time median 5-choice reaction time.

^fRTIFMDMT: reaction time median 5-choice movement time.

^gPRMPCI: pattern recognition memory percent correct immediate.

^hPRMPCD: pattern recognition memory percent correct delayed.

ⁱSSPFSL: spatial span forward span length.

^jSWMBE468: spatial working memory between errors (4, 6, and 8 boxes).

^kSWMBE4: spatial working memory between errors (4 boxes).

^lSWMBE6: spatial working memory between errors (6 boxes).

^mSWMBE8: spatial working memory between errors (8 boxes).

ⁿSWMS: spatial working memory strategy.