Table 5.
Univariate analysis of the factors predicting failure rate at stop for participants living in urban areas (bivariate associations)
| Factors | Incident rate ratio | 95% Confidence Limits | p-value |
|---|---|---|---|
| Demographics | |||
| Age (per year increase) | 1.00 | 0.96-1.04 | 0.99 |
| Male Gender | 1.06 | 0.67-1.66 | 0.81 |
| African American | 0.45 | 0.20 - 0.98 | 0.046 |
| Physical and Vision Variables | |||
| Best Eye Contrast Sensitivity (per letter increase) | 0.91 | 0.82-1.01 | 0.08 |
| Points Missing in Visual field (per point missed) | 0.89 | 0.79 - 0.97 | 0.018 |
| AVF Average (per degree increase) | 1.00 | 0.95-1.04 | 0.89 |
| Visual Acuity (LogMAR) (per line lost) | 1.11 | 0.92-1.35 | 0.28 |
| Total Brake Reaction Time (BRT) (per unit increase) | 1.00 | 0.94-1.07 | 0.97 |
| Cognitive and Executive function | |||
| Mini-Mental State Exam (per unit increase) | 0.92 | 0.80-1.04 | 0.17 |
| Visual Motor Integration | 1.00 | 0.94-1.06 | 0.96 |
| Brief Test of Attention (per unit increase) | 0.97 | 0.88-1.06 | 0.48 |
| Time to complete Tower of Hanoi (per minute increase) | 0.96 | 0.85-1.09 | 0.55 |
| Trials A (per 10 sec inc) | 0.91 | 0.80-1.02 | 0.13 |
| Trials B (per 10 sec inc) | 0.97 | 0.94-1.01 | 0.11 |
Note: In multivariate analyses, African American race was no longer significant once adjusting for visual field results.