Table 1.
Comparison of baseline characteristics between Fitbit participants included in this analysis and participants excluded based on compliance.
| Variable | Included (n=123) | Excluded (n=510) | |
| Age (years), mean (SD) | 17.8 (0.4) | 17.7 (0.5) | |
| Gender, n (%)a | |||
|
|
Male | 65 (52.8) | 265 (51.9) |
|
|
Female | 58 (47.1) | 245 (48.0) |
| Race, n (%)b | |||
|
|
White | 81 (65.8) | 335 (65.6) |
|
|
Latino | 21 (17.0) | 57 (11.1) |
|
|
Asian | 12 (9.7) | 46 (9.0) |
|
|
Black | 4 (3.2) | 34 (6.6) |
|
|
Foreign | 4 (3.2) | 38 (7.4) |
|
|
Unknown | 1 (0.8) | 0 (0.0) |
| High school, n (%)a | |||
|
|
Public school | 64 (52.0) | 253 (49.6) |
|
|
Private school | 59 (47.9) | 245 (48.0) |
|
|
Home school | 0 (0.0) | 2 (0.3) |
|
|
Other | 0 (0.0) | 10 (1.9) |
| Parents’ income, n (%)a | |||
|
|
Less than $25,000 | 3 (2.4) | 27 (5.2) |
|
|
US $25,000-$49,999 | 10 (8.1) | 29 (5.6) |
|
|
US $50,000-$74, 999 | 14 (11.3) | 38 (7.4) |
|
|
US $75,000-$99,999 | 10 (8.1) | 47 (9.2) |
|
|
US $100,000-$149,999 | 25 (20.3) | 97 (19.0) |
|
|
US $150,000-$199,999 | 12 (9.7) | 55 (10.7) |
|
|
US $200,000-$249,999 | 10 (8.1) | 50 (9.8) |
|
|
US $250,000 or more | 34 (27.6) | 143 (28.0) |
|
|
Unknown | 5 (4.0) | 24 (4.7) |
aN=633, 100%
bN=632, 99.8%