Table 2.
Participant activity metrics by severity of visual field damage (N=229)
| Normal/Mild VF damage (IVF>28 dB) N = 115 | Moderate VF damage (IVF:23–28 dB) N = 91 | Severe VF damage (IVF<23 dB) N = 23 | P-value | |
|---|---|---|---|---|
| Away home activity outcomes (per day) | ||||
| MVPA minutes, mean (SD) | 9.31 (12.76) | 6.77 (11.45) | 3.61 (6.08) | 0.07 |
| Active minutes, mean (SD) | 48.01 (32.43) | 39.53 (33.41) | 25.76 (23.42) | 0.01 |
| Time spent away-from-home (minutes), mean(SD) | 257.30 (158.22) | 252.52 (154.20) | 198.79 (178.64) | 0.27 |
| Steps, mean (SD) | 2196.44 (1228.01) | 1819.05 (1754.92) | 1077.44 (1004.18) | 0.01 |
| Excursions per week, mean (SD) | 7.15 (4.97) | 8.36 (7.17) | 6.25 (4.35) | 0.19 |
| At home activity outcomes (per day) | ||||
| MVPA minutes, mean (SD) | 1.96 (6.70) | 1 (3.45) | 0.77 (2.13) | 0.35 |
| Active minutes, mean (SD) | 67.45 (44.86) | 56.95 (40.61) | 43.60 (28.52) | 0.02 |
| Time spent at home (minutes), mean (SD) | 948.25 (310.43) | 896.28 (313.15) | 1082.77 (247.52) | 0.04 |
| Steps, mean (SD) | 1518.84 (1228.01) | 1295.73 (1102.14) | 985.46 (755.40) | 0.09 |
| Time period (minutes) for missing GPS data | 234.46 (299.95) | 291.21 (297.41) | 158.43 (147.76) | 0.11 |
VF: vision field; SD: standard deviation; MVPA: moderate & vigorous physical activity.
Note: the sum of time spent (minutes) at and away from home did not equal 1440 (24 hours) because we restricted each study minute to when both accelerometer and GPS data were available.