Table 1.
Participant Characteristics
| Characteristic | Fail (n = 101) | Pass (n = 101) | P Value |
|---|---|---|---|
| Age, mean ± SD, y | 76.8 ± 12.7 | 77.9 ± 12.6 | 0.522 |
| Number of female participants | 21 | 21 | 1 |
| Corrected visual acuity (logMAR), mean ± SD | 0.120 ± 0.114 | 0.109 ± 0.110 | 0.503 |
| Visual field defect, n | 101 | 101 | 1 |
| Progressive eye disease, n | 100 | 99 | 0.561 |
| Central nervous system disorder, n | 16 | 16 | 1 |
| Presence of diseases,a n | |||
| Glaucoma | 60 | 54 | 0.395 |
| Macular disease | 9 | 12 | 0.489 |
| Cataract | 26 | 23 | 0.622 |
| Stroke/brain tumor | 18 | 13 | 0.329 |
| Diabetes mellitus | 19 | 18 | 0.856 |
| Ocular vascular occlusion | 5 | 5 | 1 |
| Progressive disease, n | 49 | 46 | 0.672 |
| Prescription eyeglasses, n | 78 | 76 | 0.837 |
| Contact lenses, n | 2 | 2 | 1 |
| Affected dark adaptation, n | 0 | 0 | — |
| Diplopia, n | 0 | 1 | 0.314 |
| Time between field test and on-road driving test, mean ± SD, mo | 3.97 ± 2.45 | 2.42 ± 1.59 | <0.001 |
“Fail” and “pass” reflect the outcome of the on-road driving test. P values are outcomes of independent-samples t-tests for continuous variables and χ2 tests for categorical variables. Bold value highlights a significant value (P < 0.05).
a
Multiple comorbidities could be present in one participant.