Table 2.

Visual outcomes at baseline and 1 year for the two cognitive groups

	Baseline mean (SD)	1 year mean (SD)	95% CI for difference between baseline and 1 year*	p Value*
Outcome: visual quality of life
Normal cognition (n=46)	79.3 (12.4)	93.7 (5.5)	11.2 to 17.7	<0.001
Impaired cognition (n=45)	77.6 (13.9)	90.0 (9.6)	8.6 to 16.3	<0.001
95% CI for difference between cognitive groups†	−3.8 to 7.8	0.4 to 7.0
p Value†	0.5	0.03
Outcome: best corrected visual acuity
Normal cognition (n=46)	0.13 (0.09)	0.00 (0.09)	0.09 to 0.16	<0.001
Impaired cognition (n=45)	0.18 (0.14)	0.06 (0.11)	0.08 to 0.16	<0.001
95% CI for difference between cognitive groups†	0.00 to 0.10	0.02 to 0.10
p Value†	0.05	0.007

*From paired t tests.

†From independent t tests.