TILES

Wearable Sensors

You will be asked to wear commercially available sensors during both in-person study sessions and continuously throughout your day for the duration of your participation in the study (10 weeks). These sensors do not stimulate you in any way. The following list describes the categories of devices that will be used.

1) Wrist-worn Sensor

You will be asked to wear a Fitbit Charge 2 on your wrist for 24 hours a day for the duration of your participation in the study (10 weeks). The Fitbit Charge 2 measures heart rate, step counts, and other signals. Information collected from the Fitbit Charge 2 will be used to track sleep quality, fatigue, hours of stress, and morning stress levels. During your in-person enrollment session, you will be given instructions on how to recharge the device and how to sync the Fitbit Charge 2 with a phone application, to be sure that the research team has access to your information.

2) Chest-worn Sensor

You will be asked to wear an OmSignal garment during your work shift for the duration of your participation in the study (10 weeks). For men, the garment is a shirt that can be worn alone or as an undershirt; for women, the garment is a custom fit bra. The garment includes health sensors inside the fabric that measure physical information in real-time and sends this information to your mobile phone. OmSignal garments measure heart rate, heartbeat noise level, breathing rate, acceleration, step counts, and foot movement. Information collected from the OmSignal garment will be used to measure activity, fatigue, and stress. During your in-person enrollment session, you will be given instructions on how to pin the sensor to the garment, download the OmSignal phone application (if you have not already done so), sync the sensor to your phone, recharge the sensor, and wash the garment.

3) Audio/Social Interaction Sensor

You will be asked to wear the Android Jelly during your work shift for the duration of your participation in the study (10 weeks). The Android Jelly is the size of a standard credit card and is clipped onto a collar or hung around the neck. The Android Jelly listens for voices in the surrounding environment from time to time. The audio signal may be saved temporarily on the audio recording device for the purpose of obtaining information related to sound, including, but not limited to, vocal intensity, duration, and pitch. The sound features do not include any content of conversation about what was actually spoken, which means private information will not be collected. The content of the audio information will be deleted after the sound features are obtained. Information collected from the phone will be used to measure emotion, stress, and social interaction. You will be asked to review the privacy and confidentiality section in the consent form to understand how this information may be used and give the research team permission to access audio information. During your in-person enrollment session, you will be given instructions on how to download the TILES Audio application on the Android Jelly.

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After receiving the wearable sensors, being appropriately fit with the sensors, and being trained on sensor use, you will learn about the environmental sensors that will be placed at Keck Medical Center, USC University Park Campus, and Information Sciences Institute for the duration of your participation in the study (10 weeks).

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Environmental Sensors:

A number of different environmental sensors will be placed at Keck Medical Center, USC University Park Campus, and Information Sciences Institute for the duration of your participation in the study (10 weeks). Information about the environmental sensors is given below:

1) ReelyActive Owl-in-one:

ReelyActive Owl-in-one plugs into an outlet and automatically connects to WiFi to send Bluetooth information. The Owl-in-one devices will be plugged into different rooms at Keck Medical Center, USC University Park Campus, and Information Sciences Institute where participants spend most of their time, like offices, nursing units, and break rooms, for the duration of your participation in the study (10 weeks). Owl-in-one will track how close you are to the device, using Bluetooth messages that are sent from the Fitbit Charge 2. Owl-in-one will also measure environmental temperature, humidity, motion, and ambient light. No participant interaction with Owl-in-one is required.

2) Minew Beacons:

The Minew Beacons used in this study will measure information about the environment and report it to listening beacons. Three models will be used: The S1 Beacon will measure temperature and humidity; the i7-Rock beacon will measure motion, and the E6 beacon will measure light level. The Minew Beacons will be placed in different rooms at Keck Medical Center, USC University Park Campus, and Information Sciences Institute within range of the Owl-in-one sensors. The motion sensors will be attached to doors leading into the main work rooms, like the entrance/exit to a nursing unit or break room door, and capture when the door opens or closes. Once the sensors are placed in the environment and turned on, they automatically report information. No participant interaction with Minew Beacons is required.