Table 2.
FLORA Ease of Task Results: Mean Difference (Device On - Off) at Endpoint
| End Point | |||||||
|---|---|---|---|---|---|---|---|
| Task Number | Domain | Task | Subjects | Range Device Off | Range Device On | Mean Difference | P Value* |
| 1 | Visual orientation | Locate lights in the environment | 3 | [2,3] | [3,4] | 0.7 | 0.157 |
| 2 | Visual orientation | Visually find doorways | 3 | [1,2] | [3,4] | 2.0 | 0.083 |
| 3 | Visual orientation | Use light from windows to determine orientation | 3 | [2,4] | [4,4] | 1.0 | 0.166 |
| 4 | Visual orientation | Use artificial light to determine orientation | 1 | [1,1] | [3,3] | 2.0 | 0.317 |
| 5 | Visual orientation | Use the sun to determine orientation | 0 | ||||
| 6 | Visual orientation | Recognize and use shapes for orientation and environmental information | 2 | [1,2] | [3,3] | 1.7 | 0.180 |
| 7 | Visual Mobility | Independently cross residential streets by following the lines of a crosswalk | 0 | ||||
| 8 | Visual Mobility | Avoid obstacles while walking | 3 | [2,4] | [3,3] | 0.0 | 1.000 |
| 9 | Visual Mobility | Estimate the size of an obstacle | 3 | [2,3] | [2,3] | 0.3 | 0.564 |
| 10 | Visual Mobility | Avoid low-hanging branches, plants, head-high shelves, etc. | 2 | [1,2] | [2,2] | 0.5 | 0.317 |
| 11 | Visual Mobility | Detect curbs | 3 | [3,4] | [3,4] | 0.0 | 1.000 |
| 12 | Daily life | Determine whether room lights are on or off | 3 | [2,2] | [2,3] | 0.3 | 0.317 |
| 13 | Daily life | Locate ordinary objects at various distances (familiar environment) | 3 | [2,3] | [3,4] | 0.7 | 0.317 |
| 14 | Daily life | Visually locate a place setting on a dining table | 3 | [1,1] | [3,4] | 2.3 | 0.102 |
| 15 | Daily life | Visually locate/identify things in the bathroom (familiar environment) | 3 | [1,1] | [2,4] | 2.0 | 0.109 |
| 16 | Daily life | Visually locate/identify things in the bathroom (unfamiliar environment) | 3 | [1,1] | [2,4] | 2.0 | 0.109 |
| 17 | Daily life | Visually locate dishes while washing | 3 | [1,1] | [2,3] | 1.7 | 0.102 |
| 18 | Daily life | Visually locate clothes | 3 | [1,1] | [2,3] | 1.7 | 0.102 |
| 19 | Daily life | Visually find pots/pans/utensils in the kitchen | 3 | [1,1] | [2,4] | 2.0 | 0.109 |
| 20 | Daily life | Sort light from dark laundry | 3 | [1,1] | [2,3] | 1.7 | 0.102 |
| 21 | Daily life | Travel within home independently | 3 | [4,4] | [4,4] | 0.0 | 1.000 |
| 22 | Daily life | Identify top step/bottom step | 3 | [4,4] | [4,4] | 0.0 | 1.000 |
| 23 | Daily life | Negotiate stairways independently | 3 | [4,4] | [4,4] | 0.0 | 1.000 |
| 24 | Daily life | Cut/chop food | 0 | ||||
| 25 | Daily life | Identify ordinary objects at various distances | 3 | [2,3] | [3,4] | 1.0 | 0.166 |
| 26 | Daily life | Visually identify food on a plate | 0 | ||||
| 27 | Daily life | Heat/reheat food | 0 | ||||
| 28 | Daily life | Maintain safety: falls/spills/burns | 3 | [3,4] | [3,4] | 0.0 | 1.000 |
| 29 | Interaction with others | Visually locate people in a non-crowded setting | 3 | [1,2] | [3,4] | 2.3 | 0.102 |
| 30 | Interaction with others | Determine when people walk by | 2 | [3,3] | [3,4] | 0.5 | 0.317 |
| 31 | Interaction with others | Detect the approach of another person | 3 | [2,3] | [3,4] | 0.7 | 0.157 |
| 32 | Interaction with others | Determine the direction of movement of people walking by | 3 | [2,3] | [2,4] | 0.3 | 0.317 |
| 33 | Interaction with others | Track another person | 3 | [1,3] | [2,4] | 0.7 | 0.157 |
| 34 | Interaction with others | Visually locate people in a crowded setting | 1 | [1,1] | [1,1] | 0.0 | 1.000 |
| 35 | Interaction with others | Determine direction another person is facing | 0 | ||||
Impossible = 1, Difficult = 2, Moderate = 3, Easy = 4. The difference between Mean ON and OFF score is provided, with a positive score representing an improvement in function.
*
P value from Wilcoxon's matched-pairs signed-rank test.