Table 1.
Characteristics of drivers with normal visual fields, hemianopia, and quadrantanopia.
| Normal Visual Fields N =30 | Hemianopia N = 22 | p-value normal visual field vs. hemianopia | Quadrantanopia N = 8 | p-value normal visual field vs. quadrantanopia | |
|---|---|---|---|---|---|
| Age, years, mean (SD) | 52 (19) | 52 (20) | .8922 | 55 (22) | .7121 |
| Gender, n (%) | |||||
| Female | 20 (67) | 9 (41) | .0647 | 2 (25) | .0339 |
| Male | 10 (33) | 13 (59) | 6 (75) | ||
| Race, n (%) | |||||
| African American | 5 (17) | 2 (9) | .3832 | 0 (0) | .2153 |
| White, non-Hispanic | 25 (83) | 19 (86) | 8 (100) | ||
| Other1 | 0 (0) | 1 (5) | 0 (0) | ||
| # Chronic Medical Conditions, mean (SD) | 2.2 (1.5) | 5.5 (3.2) | < .0001 | 4.8 (1.8) | .0003 |
| MMSE score, M (SD) | 29.0 (1.4) | 28.4 (1.6) | .1871 | 28.6 (.7) | .5131 |
| Visual acuity, logMAR, M (SD) | −0.13 (.27) | 0.08 (.32) | .0121 | −0.02 (.32) | .3445 |
| Contrast sensitivity, log sensitivity, M(SD) | 1.83 (.12) | 1.73 (.19) | .0273 | 1.79 (.13) | .3669 |
| Trails A, time to complete, seconds, M (SD) | 33 (11) | 51 (30) | .0027 | 45 (19) | .0215 |
| Trails B, time to complete, seconds, M (SD) | 81 (37) | 127 (93) | .0185 | 106 (48) | .1231 |
| Digit Symbol Substitution, # correct, M (SD) | 54.2 (12.8) | 40.7 (14.2) | .0008 | 42.4 (11.6) | .0242 |
1
One participant chose not to respond to this item.