TABLE 4.

Main effects of sliding orientation, track color, and button size on number of saccades (times).

	Young group				Middle-aged and elderly group
	Descriptive analysis		ANOVA		Descriptive analysis		ANOVA
	Mean	SD	F-values	P-values	Mean	SD	F-values	P-values
Sliding orientation
Horizontal	11.825	4.396	37.859	< 0.001	12.135	3.642	46.645	< 0.001
Vertical	15.222	8.267			14.187	5.280
Track color
Color gradient	11.685	5.414	4.838	0.001	11.337	3.202	14.049	< 0.001
Blue gradient	13.714	5.954			12.752	4.824
Gray gradient	13.348	5.239			13.130	4.608
Blue solid color	15.500	9.669			13.922	5.657
Gray solid color	13.371	6.486			14.664	3.961
Button size
3 mm	17.004	7.720	45.947	< 0.001	16.922	5.374	157.376	< 0.001
5 mm	12.975	7.017			11.471	3.182
7 mm	10.591	3.242			11.090	2.142