Table 2.
Outline of measures and data collection points for the Stay Strong trial.
| Measure | Source | Timepoints assessed | Method of measurement |
| Demographic measures | Online survey | Baseline | Self-report |
| Active minutes [48] | Fitbit | Continuous | Wearable sensor |
| Body weight | Bluetooth scale | Daily or as assessed by user | Synced data from scale or manually entered |
| Patient activation measure | Online survey | Baseline, 6 and 12 months | Self-report |
| Motivation to change health behaviors [53] | Online survey | Baseline, 6 and 12 months | Self-report |
| Social support general (ISEL-12a) [54] | Online survey | Baseline, 6 and 12 months | Self-report |
| Physical activity questions including exercise vital signs [55] | Online survey | Baseline, 6 and 12 months | Self-report |
| Self-regulation exercise and diet [56] | Online survey | Baseline, 6 and 12 months | Self-report |
| Self-efficacy and controllability [57] | Online survey | Baseline, 6 and 12 months | Self-report |
| Social support for diet and exercise [58] | Online survey | Baseline, 6 and 12 months | Self-report |
| Diet—starting the conversation [59] | Online survey | Baseline, 6 and 12 months | Self-report |
| Physical activity [60] | Online survey | Baseline, 6 and 12 months | Self-report |
| Self-perception of weight [61] | Online survey | Baseline, 6 and 12 months | Self-report |
| General health via SF-12b [62] | Online survey | Baseline, 6 and 12 months | Self-report |
| Depressive symptoms (PHQ-8c) [63] | Online survey | Baseline, 6 and 12 months | Self-report |
| Pain, pain intensity, and pain interference with daily activities [64-67] | Online survey | Baseline, 6 and 12 months | Self-report |
| Sleep (MOS-6d) [68] | Online survey | Baseline, 6 and 12 months | Self-report |
| Smoking and alcohol use [69,70] | Online survey | Baseline, 6 and 12 months | Self-report |
| Technology use, comfort, and acceptance [71,72] | Online survey | Baseline, 6 and 12 months | Self-report |
| Physical Activity devices | Online survey | Baseline, 6 and 12 months | Self-report |
| Barriers to physical activity [73,74] | App-based survey for Intervention only | Baseline, 6 and 12 months | Self-report |
aISEL-12: 12-item Interpersonal Support Evaluation List.
bSF-12: 12-Item Short-Form Health Survey.
cPHQ-8: 8-item Patient Health Questionnaire.
dMOS-6: 6-item Sleep Scale from the Medical Outcomes Study.