Table 3 Demographic and clinical characteristics of the cross-sectional analysis population at baseline (N = 227)
Sample characteristics | Statistic or N (%) |
|---|---|
Age (years) | |
N | 227 |
Mean (SD) | 50.9 (2.76) |
Median | 51.0 |
Min, Max | 45, 55 |
Sex | |
Female | 132 (58.1%) |
Male | 95 (41.9%) |
Country | |
US | 131 (57.7%) |
Japan | 45 (19.8%) |
Australia | 35 (15.4%) |
Canada | 16 (7.0%) |
Ethnicity | |
Not Hispanic or Latino | 207 (91.2%) |
Hispanic or Latino | 18 (7.9%) |
Not reported | 2 (0.8%) |
Race* | |
White | 160 (70.5%) |
Asian | 51 (22.5%) |
Black or African American | 14 (6.2%) |
Multiple | 2 (0.9%) |
Does the participant need vision correction aid? | |
Yes | 155 (68.3%) |
No | 72 (31.7%) |
DCNVA | |
DCNVA better than 0.6 logMAR (i.e., better than 20/80 Snellen equivalent) | 191 (84.1%) |
DCNVA of 0.6 logMAR or worse (i.e., 20/80 or worse Snellen equivalent) | 34 (15.0%) |
Missing | 2 (0.9%) |
Is participant myopic? | |
Yes | 32 (14.1%) |
No | 195 (85.9%) |