Table 2. Comparison of Pre- and Post-GPS Feasibility and Acceptability Survey Items.
| Pre-GPS survey (n = 75) | Post-GPS survey (n = 74) | |||
|---|---|---|---|---|
| Question* | % Strongly Agree/Agree* | Question* | % Strongly Agree/Agree* | p-value** |
| 1. I am comfortable with the research study tracking where I go using GPS. | 93.3 | 1. I felt comfortable with the research study tracking where I go using GPS. | 89.2 | 0.375 |
| 2. GPS makes it more interesting to participate in the study. | 81.3 | 2. GPS made it more interesting to participate in the study. | 82.4 | 0.999 |
| 3. I am worried about someone trying to steal the GPS. | 6.7 | 3. I was worried about someone trying to steal the GPS. | 4.1 | 0.625 |
| 4. The GPS seems uncomfortable to wear. | 6.7 | 4. The GPS irritated my skin or was uncomfortable to wear. | 0 | 0.063 |
| 5. I am concerned that I will lose the GPS. | 8.0 | 5. I was concerned that I would lose the GPS | 17.6 | 0.039 |
| 6. I am worried about my safety wearing the GPS. | 2.7 | 6. I worried about my safety wearing the GPS. | 0 | 0.500 |
| 7. I am concerned about how I will look wearing the GPS. | 10.7 | 7. I was concerned about how I looked wearing the GPS. | 2.7 | 0.267 |
* Other response options for questions were “neutral” and “strongly disagree/disagree” (data not shown).
** p-values are based on chi-square statistics, comparing pre-GPS and post-GPS survey questions. McNemar’s test (McNemar, 1947) was used to account for the repeated measures design.