Outcome
Type |
Measure |
Description |
Time frame |
Safety issue |
Other |
Daily self-reported sleep disturbance, as measured by time to fall asleep, on the in-app sleep survey. |
Daily reports of time to fall asleep reported on the in-app daily sleep survey with options: Fell asleep within 15 minutes, Fell asleep within 16-30 minutes, Fell asleep within 31-60 minutes, Fell asleep after 60 minutes. |
Recorded daily throughout the 6 week intervention (intervention group only) |
|
Other |
Daily self-reported sleep disturbance, as measured by number of awakenings on the in-app sleep survey |
Daily reports of number of awakenings on the in-app sleep survey with options from 0-more than 4 times in increments of 1. |
Recorded daily throughout the 6 week intervention (intervention group only) |
|
Other |
Daily self-reported sleep disturbance, as measured by total time awake on the in-app sleep survey. |
Daily reports of number of awakenings on the in-app sleep survey with the following options: 0-30 minutes, 31-60 minutes, 1-2 hours, 2 or more hours |
Recorded daily throughout the 6 week intervention (intervention group only) |
|
Other |
Habit formation |
Habit formation for using the Chorus Sleep App will be measured using an adaptation of the Self-Report Behavioral Automaticity Index. Mean scores will be used across 4 items. Possible scores range from 1-5, where higher scores indicate greater automaticity. |
within 1 week post- 6 week intervention |
|
Primary |
Preliminary effects of the Chorus Sleep app on sleep related impairment, as assessed by changes in participants' self-reported sleep related impairment from pre- to post- 6-week intervention period |
Change in total score on the PROMIS Sleep Related Impairment Scale from baseline to 6-week follow-up. Mean scores across the 8 items will be used. Items are a 5-point scale from 1-5. Therefore, the range of possible change scores is from -4 to 4, where a lower negative score corresponds with greater decreases in sleep disturbance, a higher score corresponds with greater increases in sleep disturbance, and 0 indicates no change. |
Within 24 hours pre-and within 1 week post- 6 week intervention |
|
Secondary |
Change in perceived stress |
Change in perceived stress on the Perceived Stress Scale-10 from baseline to 6-week follow-up. Mean scores across the 10 items will be used. Items are on a 5-point scale from 1-5. Therefore, the range of possible change scores is from -4 to 4, where lower negative scores correspond with greater decreases in perceived stress, higher positive scores correspond with greater increases in perceived stress, and 0 indicates no change. |
Within 24 hours pre-and within 1 week post- 6 week intervention |
|
Secondary |
Change in depression symptoms |
Change in depression symptoms on the PROMIS® Item Bank v1.0 - Emotional Distress - Depression-Short Form 8a from baseline to 6-week follow-up. Mean scores across the 8 items will be used. Items are on a 5-point scale from 1-5. Therefore, the range of possible change scores is from -4 to 4, where lower negative scores correspond with greater decreases in depression, higher positive scores correspond with greater increases in depression, and 0 indicates no change. |
Within 24 hours pre-and within 1 week post- 6 week intervention |
|
Secondary |
Change in anxiety symptoms from baseline to 6-week follow-up. |
Change in anxiety symptoms on the PROMIS® Item Bank v1.0 - Emotional Distress - Anxiety - Short Form 8a from baseline to 6-week follow-up. Mean scores across the 8 items will be used. Items are on a 5-point scale from 1-5. Therefore, the range of possible change scores is from -4 to 4, where lower negative scores correspond with greater decreases in anxiety, higher positive scores correspond with greater increases in anxiety, and 0 indicates no change. |
Within 24 hours pre-and within 1 week post- 6 week intervention |
|
Secondary |
Demand, based on frequency of use of the Chorus Sleep app |
The percentage of days in which participants use the chorus sleep app over the course of the 6 week study period. |
Recorded continuously throughout 6-week intervention |
|