Table 3.
An overview of the data collection methods and outcome measures.
| Domain | Data type | Methods | Passive data | Measures | Components | ||
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|
|
|
|
|
I | II | III |
| Passive sensing data | Quantitative | GPSa (mobile phone) | Movement | Amount of time at the house | —b | xc | x |
| Passive sensing data | Quantitative | GPS (mobile phone) | Movement | Time spent outside the house | — | x | x |
| Passive sensing data | Quantitative | Accelerometer (mobile phone) | Activity | Activity—time spent standing, walking, running. | — | x | x |
| Passive sensing data | Quantitative | Proximity beacon (proximity beacon) | Proximity | Time spent with the child | — | x | x |
| Passive sensing data | Quantitative | Proximity beacon (proximity beacon) | Proximity | Time spent away from child (self-care) | — | x | x |
| Passive sensing data | Quantitative | Proximity beacon (proximity beacon) | Proximity | The consistency of interaction between mother and child | — | x | x |
| Passive sensing data | Quantitative | Episodic audio recorder (mobile phone) | Audio with conversations | Social interaction (conversation) | — | x | x |
| Environment | Quantitative | Home Observation Measurement of the Environment inventory | N/Ad | A 45-item tool to assess the home environment in terms of responsivity, acceptance, organization, learning materials, involvement, and variety | — | x | x |
| Environment | Quantitative | Observation of Mother-Child Interaction | N/A | An 18-item tool to assess the quality of interaction between mother and child. | — | x | x |
| Environment | Qualitative | Day in Life | N/A | An hour-by-hour description of participant’s activities over an average day (4 am to 10 pm) to record scheduled activities. | — | x | x |
| Feasibility, acceptability, and utility | Qualitative | Focus group discussion with community advisory board members | N/A | — | x | x | x |
| Feasibility, acceptability, and utility | Qualitative | Key informant interview with adolescent mothers on motherhood | N/A | — | — | x | x |
| Feasibility, acceptability, and utility | Qualitative | Key informant interview with providers | N/A | — | — | — | x |
| Feasibility, acceptability, and utility | Qualitative | Key informant interview with adolescent mothers on technology | N/A | — | — | x | x |
aGPS: Global Positioning System.
bPassive data will not be collected.
cPassive data will be collected.
dN/A: not applicable.