Table 4. Results of regression analyses and comparisons of the univariate regression analyses with the multiple regression analyses for each UFOV subtest.

	Model	Fit statistics	p-value	R2 or ΔR2	β’age	β’pred
UFOV1	Linear	F(1, 39) = 1.34	0.25	0.03	0.18
	Quadratic	Fchange (1,38) < 0.001	0.98	ΔR2 < 0.001	0.18	-0.005
	VAfar best eye	Fchange (1,38) = 0.08	0.77	ΔR2 = 0.002	0.18	0.05
	VAnear best eye	Fchange (1,38) = 0.88	0.36	ΔR2 = 0.02	0.17	0.15
	Crowding intensity	Fchange (1,38) = 0.08	0.77	ΔR2 = 0.002	0.19	-0.05
	Contrast sensitivity	Fchange (1,38) = 0.20	0.66	ΔR2 = 0.005	0.20	-0.07
UFOV2	Linear	F(1, 39) = 2.77	0.10	0.07	0.26
	Quadratic	Fchange (1,38) = 2.45	0.13	ΔR2 = 0.06	0.32	0.25
	VAfar best eye	Fchange (1,38) = 0.38	0.54	ΔR2 = 0.009	0.24	0.1
	VAnear best eye	Fchange (1,38) <0.001	0.98	ΔR2 < 0.001	0.26	-0.003
	Crowding intensity	Fchange (1,38) = 0.72	0.40	ΔR2 = 0.02	0.23	0.13
	Contrast sensitivity	Fchange (1,38) = 0.28	0.60	ΔR2 = 0.007	0.24	0.08
UFOV3	Linear	F(1, 39) = 21.91	< 0.001	0.36	0.60
	Quadratic	Fchange (1,38) = 1.17	0.29	ΔR2 = 0.019	0.64	0.14
	VAfar best eye	Fchange (1,38) = 0.01	0.92	ΔR2 < 0.001	0.60	0.01
	VAnear best eye	Fchange (1,38) = 0.06	0.80	ΔR2 = 0.001	0.60	-0.03
	Crowding intensity	Fchange (1,38) = 0.09	0.74	ΔR2 = 0.002	0.61	-0.04
	Contrast sensitivity	Fchange (1,38) = 0.082	0.78	ΔR2 = 0.001	0.59	0.04