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Program acceptability and adherence.
| Measures | Values, mean (SD) |
| How helpful were the SMS text messages? (scale of 1 to 7) | 5.8 (1.3) |
| How much did you enjoy wearing the Fitbit? (scale of 1 to 7) | 6.2 (1.3) |
| How did you like the program? (scale of 1 to 7) | 6.6 (0.7) |
| Weeks (maximum of 11) that participants met the weekly goal | 7.2 (3.5) |
| Weeks (maximum of 11) that participants met the weekly bonus | 5.3 (3.8) |
| Total incentives (US $) earned during the program (maximum of US $500) | 302.04 (163.85) |
