Table 3.
Descriptive statistics of change in monthly step count averages by feedback sign.
| Mean difference in step counts (SD) | |||
| Positive feedbacka | Negative feedbacka | Totala | |
| Mail 1 | −482.71 (2035.95) | 363.30 (2114.51) | −349.37 (2070.88) |
| Mail 2 | −328.77 (1858.73) | 717.76 (2153.88) | −148.82 (1952.29) |
| Mail 3 | −399.11 (1869.87) | 587.71 (2012.82) | −234.52 (1929.12) |
| Mail 4 | −497.77 (1854.33) | 215.26 (1654.28) | −382.55 (1842.09) |
| Mail 5 | −422.96 (1607.90) | 329.19 (2112.57) | −285.12 (1735.20) |
| Total | −425.34 (1858.38) | 450.29 (2032.06) | −279.51 (1916.24) |
aValues represent the mean change in monthly average step counts after dispatch of the feedback mail.