Table 1.
Descriptive Characteristics for the Study Population Stratified by the Control, Glaucoma, and AMD Classifications
| Variable | Control (n = 59) | Glaucoma (n = 74) | AMD (n = 60) |
|---|---|---|---|
| Acuity, mean (SD), logMAR | 0.07 (0.12) | 0.25 (0.33) | 0.44 (0.32) |
| Acuity, Snellen | 20/23 | 20/36 | 20/55 |
| Better-eye VF MD, mean (SD) | 0.10 (1.34) | −10.63 (7.43) | NA |
| Age, mean (SD), y | 69.6 (5.2) | 70.5 (5.3) | 74.4 (5.0) |
| Male, % | 40.7 | 44.6 | 41.8 |
| African American, % | 20.3 | 33.8 | 1.8 |
| Married, %a | 71.2 | 68.9 | 70.0 |
| Employed (yes vs no), % | 39.0 | 44.6 | 21.8 |
| Driving status (yes vs no), %b | 89.9 | 77.2 | 75.7 |
| Education, mean (SD), y | 15.3 (2.8) | 14.9 (2.7) | 14.9 (2.1) |
| Population/sq mile, mean (SD)c | 4.3 (5.2) | 5.0 (6.4) | 3.4 (5.3) |
| Weekday (yes vs no), %d | 68.1 | 66.3 | 61.8 |
Abbreviations: AMD, age-related macular degeneration; MD, mean deviation; NA, not available; VF, visual field.
a
Married also included those living together vs not married.
b
Any self-reported driving in the prior 3 months.
c
Population per square mile in units of 1000 people.
d
Weekday variable summarized over all 1048 person tracking days.