Table 3.
Multivariable association between baseline characteristics and program usage and physical activity (n=51): separate models using linear mixed models.
| Characteristics of program usage: models | Moderate to vigorous physical activitya | ||||
| Sources of variance, SDb (95% CI) | Β (95% CI) | ||||
| Model: description | Independent variables (additional) |
Categories | Between eHealth teams | Between participants |
|
| Model 1: raw |
|
|
N/Ac | 0.98 (0.80 to 1.19) | N/A |
| Model 2: baseline characteristics |
|
|
N/A | 0.99 (0.81 to 1.22) |
|
|
|
Age |
|
|
|
0.01 (−0.03 to 0.04) |
|
|
Sex | Women |
|
|
Reference |
|
|
|
Men |
|
|
0.43 (−0.33 to 1.19) |
|
|
BMId at baseline |
|
|
|
−0.02 (−0.08 to 0.04) |
| Model 3: model 2 + eHealth team |
|
|
0.88 (0.51 to 1.55) | 0.54 (0.43 to 0.67) |
|
| Model 4: model 3 + compliance |
|
|
0.86 (0.49 to 1.52) | 0.55 (0.44 to 0.69) |
|
|
|
Compliancee | <85% |
|
|
Reference |
|
|
|
85%-95% |
|
|
0.15 (−0.34 to 0.65) |
|
|
|
≥95% |
|
|
0.17 (−0.31 to 0.64) |
| Model 5: model 3 + engagement |
|
|
0.83 (0.46 to 1.50) | 0.54 (0.43 to 0.68) |
|
|
|
Engagementf | ≤3 |
|
|
Reference |
|
|
|
4 or 5 |
|
|
0.19 (−0.25 to 0.64) |
| Model 6: model 3 + compliance + engagement |
|
|
0.82 (0.45 to 1.48) | 0.56 (0.44 to 0.70) |
|
|
|
Compliance | <85% |
|
|
Reference |
|
|
|
85%-95% |
|
|
0.17 (−0.34 to 0.67) |
|
|
|
≥95% |
|
|
0.06 (−0.50 to 0.62) |
|
|
Engagement | ≤3 |
|
|
Reference |
|
|
|
4 or 5 |
|
|
0.17 (−0.32 to 0.66) |
aLog-transformed average moderate to vigorous physical activity (metabolic equivalent task or MET>3), in MET hours.
bSD is the standard deviation of the random effect between teams or between participants.
cN/A: not applicable.
dBMI: body mass index.
eCompliance is expressed as percentage of days with >10 hours of physical activity registration (accelerometer wear).
fEngagement is expressed as the number of times at least 100% of the target was reached (1-5).