Outcome
Type |
Measure |
Description |
Time frame |
Safety issue |
Other |
Mean Within-Subject Difference in Self-Reported Sleep Disturbance. |
Participants will rate their sleep disturbance using the Insomnia Severity Index (ISI) administered daily during baseline and intervention periods (14 weeks). Items are rated from 0 to 4, with higher scores indicating greater levels of sleep disturbance. Levels of daily sleep disturbance will be aggregated within the baseline assessment period and in each of the intervention periods (3 mg melatonin, 0.5 mg melatonin, placebo) to generate an overall mean and standard deviation for each period. Changes in sleep disturbance over the course of the study will be evaluated using Generalized Linear Mixed Model analyses. |
Difference in self-reported sleep disturbance will be assessed every two weeks between baseline and intervention periods (14 weeks total). |
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Other |
Within-Subject Difference in Self-Reported Side Effects. |
Participant self-reported side effects will be assessed utilizing a weekly survey measure. Number of side effects will be aggregated within the baseline assessment period and in each of the intervention periods (3 mg melatonin, 0.5 mg melatonin, placebo) to generate a count of self-reported side effects in each study period. Side effects over the course of the study will be evaluated using Generalized Linear Mixed Model analyses. |
Self-reported side effects will be assessed via weekly survey during the baseline assessment period (2 weeks) and during each of the 6 intervention periods (2 weeks each, 12 weeks total). |
|
Other |
Within-Subject Difference in Ecological Momentary Assessment (EMA) of Pain. |
. Pain will be assessed via 3 daily text message prompts sent at random times throughout the day asking individuals to rate their pain on a scale of 0(low) to 10(high). Levels of EMA pain will be aggregated within the baseline assessment period and in each of the intervention periods (3 mg melatonin, 0.5 mg melatonin, placebo) to generate an overall mean and standard deviation for each period. Changes in EMA pain over the course of the study will be evaluated using Generalized Linear Mixed Model analyses. |
EMA pain will be assessed 3 times daily via text message during the baseline assessment period (2 weeks) and during each of the 6 intervention periods (2 weeks each, 12 weeks total). |
|
Other |
Within-Subject Difference in Ecological Momentary Assessment (EMA) of Mood. |
Mood will be assessed via 3 daily text message prompts sent at random times throughout the day asking individuals to rate their fatigue on a scale of 0(poor) to 10(excellent). Levels of EMA mood will be aggregated within the baseline assessment period and in each of the intervention periods (3 mg melatonin, 0.5 mg melatonin, placebo) to generate an overall mean and standard deviation for each period. Changes in EMA mood over the course of the study will be evaluated using Generalized Linear Mixed Model analyses. |
EMA mood will be assessed 3 times daily via text message during the baseline assessment period (2 weeks) and during each of the 6 intervention periods (2 weeks each, 12 weeks total). |
|
Other |
Within-Subject Difference in Ecological Momentary Assessment (EMA) of Concentration. |
Concentration will be assessed via 3 daily text message prompts sent at random times throughout the day asking individuals to rate their fatigue on a scale of 0(low) to 10(high). Levels of EMA concentration will be aggregated within the baseline assessment period and in each of the intervention periods (3 mg melatonin, 0.5 mg melatonin, placebo) to generate an overall mean and standard deviation for each period. Changes in EMA concentration over the course of the study will be evaluated using Generalized Linear Mixed Model analyses. |
EMA concentration will be assessed 3 times daily via text message during the baseline assessment period (2 weeks) and during each of the 6 intervention periods (2 weeks each, 12 weeks total). |
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Other |
Within-Subject Difference in Ecological Momentary Assessment (EMA) of Confidence. |
Confidence will be assessed via 3 daily text message prompts sent at random times throughout the day asking individuals to rate their fatigue on a scale of 0(low) to 10(high). Levels of EMA confidence will be aggregated within the baseline assessment period and in each of the intervention periods (3 mg melatonin, 0.5 mg melatonin, placebo) to generate an overall mean and standard deviation for each period. Changes in EMA confidence over the course of the study will be evaluated using Generalized Linear Mixed Model analyses. |
EMA confidence will be assessed 3 times daily via text message during the baseline assessment period (2 weeks) and during each of the 6 intervention periods (2 weeks each, 12 weeks total). |
|
Other |
Within-Subject Difference in Fitbit Device-Recorded Daily Steps. |
. Daily step counts will be assessed by a Fitbit device. Daily step counts will be aggregated within the baseline assessment period and in each of the intervention periods (3 mg melatonin, 0.5 mg melatonin, placebo) to generate an overall mean and standard deviation for each period. Daily steps values over the course of the study will be evaluated using Generalized Linear Mixed Model analyses. |
Daily steps will be assessed consistently via Fitbit device during the baseline assessment period (2 weeks) and during each of the 6 intervention periods (2 weeks each, 12 weeks total). |
|
Other |
Mean participant survey adherence rate. |
For each participant of the proportion of surveys measures completed (both daily and weekly surveys) will be calculated. Proportion of days adherent across all participants will be reported with means and standard deviations. |
Assessed once after the results report has been sent to the participant after completion of the trial (14 weeks from baseline). |
|
Other |
Mean participant ecological momentary assessment (EMA) adherence rate. |
For each participant of the proportion of EMA measures completed will be calculated. Proportion of days adherent across all participants will be reported with means and standard deviations. |
Assessed once after the results report has been sent to the participant after completion of the trial (14 weeks from baseline). |
|
Primary |
Mean System Usability Score (SUS) |
The SUS is a validated 10-item questionnaire that asks users to score each item on a Likert scale from Strongly Disagree (rating of 1) to Strongly Agree (rating of 5). The SUS will be presented to the participant as addressing the ease of use, complexity, consistency of the Personalized Trials system as a whole, from recruitment to receipt of the report. Individual results are calculated to arrive at a composite measure out of 100. Participant SUS scores will be averaged together and an overall mean will be reported with standard deviation. Higher scored values correlate to a more usable system, and therefore a better outcome. |
Assessed once after the results report has been sent to the participant after completion of the trial (14 weeks from baseline). |
|
Primary |
Participant Satisfaction with Personalized Trial Components |
Participants will rate their satisfaction with the Personalized N-of-1 Trial overall and with individual elements of the trial in a satisfaction survey administered following the baseline and intervention periods (14 weeks). Means and standard deviations will be reported for each element of satisfaction. Participants will rate their satisfaction on a scale of 1 to 5, with higher scores indicating greater levels of satisfaction. |
Assessed once after the results report has been sent to the participant after completion of the trial (14 weeks from baseline). |
|
Secondary |
Within-Participant Difference in Fitbit Device-Recorded Sleep Duration. |
Nightly sleep duration will be assessed by a Fitbit wearable device. Sleep duration will be aggregated within the baseline assessment period and in each of the intervention periods (3 mg melatonin, 0.5 mg melatonin, placebo) to generate an overall mean and standard deviation for each period. Sleep duration values over the course of the study will be evaluated using Generalized Linear Mixed Model analyses. |
Nightly sleep duration will be assessed consistently via Fitbit device during the baseline assessment period (2 weeks) and during each of the 6 intervention periods (2 weeks each, 12 weeks total). |
|
Secondary |
Mean Within-Subject Difference in Self-Reported Sleep Quality. |
Participants will rate their sleep disturbance using a modified version of the Consensus Sleep Diary administered daily during baseline and intervention periods (14 weeks). Participants will be asked to rate their sleep on a 5-point scale rated from "very poor" to "very good". Levels of daily sleep quality will be aggregated within the baseline assessment period and in each of the intervention periods (3 mg melatonin, 0.5 mg melatonin, placebo) to generate an overall mean and standard deviation for each period, with higher scores indicating better sleep quality. Changes in sleep quality over the course of the study will be evaluated using Generalized Linear Mixed Model analyses. |
Daily sleep quality will be assessed daily via survey during the baseline assessment period (2 weeks) and during each of the 6 intervention periods (2 weeks each). |
|
Secondary |
Within-Subject Difference in Ecological Momentary Assessment (EMA) of Fatigue. |
Fatigue will be assessed via 3 daily text message prompts sent at random times throughout the day asking individuals to rate their fatigue on a scale of 0(low) to 10(high). Levels of EMA fatigue will be aggregated within the baseline assessment period and in each of the intervention periods (3 mg melatonin, 0.5 mg melatonin, placebo) to generate an overall mean and standard deviation for each period. Changes in EMA fatigue over the course of the study will be evaluated using Generalized Linear Mixed Model analyses. |
EMA fatigue will be assessed 3 times daily via text message during the baseline assessment period (2 weeks) and during each of the 6 intervention periods (2 weeks each, 12 weeks total). |
|
Secondary |
Within-Subject Difference in Ecological Momentary Assessment (EMA) of Stress. |
Stress will be assessed via 3 daily text message prompts sent at random times throughout the day asking individuals to rate their fatigue on a scale of 0(low) to 10(high). Levels of EMA stress will be aggregated within the baseline assessment period and in each of the intervention periods (3 mg melatonin, 0.5 mg melatonin, placebo) to generate an overall mean and standard deviation for each period. Changes in EMA stress over the course of the study will be evaluated using Generalized Linear Mixed Model analyses. |
EMA stress will be assessed 3 times daily via text message during the baseline assessment period (2 weeks) and during each of the 6 intervention periods (2 weeks each, 12 weeks total). |
|
Secondary |
Mean Fitbit device adherence rate. |
For each participant, the proportion of days where the Fitbit device was worn will be calculated. Proportion of days where the Fitbit device was worn across all participants will be reported with means and standard deviations. |
Assessed once after the results report has been sent to the participant after completion of the trial (14 weeks from baseline). |
|
Secondary |
Mean participant adherence to nightly Melatonin 0.5 mg supplement. |
For each participant, the proportion of days where the melatonin 0.5 mg supplement was administered will be calculated. Proportion of days adherent across all participants will be reported with means and standard deviations. |
: Assessed once after the results report has been sent to the participant after completion of the trial (14 weeks from baseline). |
|
Secondary |
Mean participant adherence to nightly Melatonin 3 mg supplement. |
For each participant, the proportion of days where the melatonin 3 mg supplement was administered will be calculated. Proportion of days adherent across all participants will be reported with means and standard deviations. |
Assessed once after the results report has been sent to the participant after completion of the trial (14 weeks from baseline). |
|
Secondary |
Mean participant adherence to nightly placebo supplement. |
For each participant, the proportion of days where the placebo supplement was administered will be calculated. Proportion of days adherent across all participants will be reported with means and standard deviations. |
Assessed once after the results report has been sent to the participant after completion of the trial (14 weeks from baseline). |
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