Outcome
Type |
Measure |
Description |
Time frame |
Safety issue |
Other |
New self-reported diagnoses over 12 months after COVID-19 infection |
New medical diagnoses after COVID-19 infection. |
1, 2, 4, 6 and 12 months |
|
Primary |
Change in symptom severity after COVID-19 infection over 12 months after infection |
Time to return to usual health and activities, as measured using the Influenza Patient-reported Outcome (Flu-PRO) instrument. The overall score is calculated as the mean across 32 items, and ranges from 0 (symptom free) to 4 (very severe symptoms). |
1, 2, 4, 6 and 12 months |
|
Primary |
Change in fatigue severity |
Presence/absence of fatigue post-symptom onset, severity of fatigue and its effect on activity level as measured using the Fatigue Severity Scale. The Fatigue Severity Scale is a 9-item tool and each item is ranked from 1 (strongly disagree) to 7 (strongly agree). The item scores are added to generate the overall score, ranging from 9 (least severe) to 63 (most severe). |
1 and 4 months |
|
Primary |
Change in number of COVID-19 symptoms experienced over 12 months after infection |
Number of symptoms experienced using Flu-PRO and additional COVID-19 specific symptoms in domains of neuropsychiatry, cardiovascular, and skin. Flu-PRO scores range from 0 (symptom free) to 4 (very severe symptoms). |
1, 2, 4, 6 and 12 months |
|
Secondary |
Change in mMRC rates of dyspnea |
The Modified Medical Research Council (mMRC) instrument will be used to measure dyspnea. The mMRC rates severity of dyspnea on a scale of 0 to 4, 4 indicating the highest level of dyspnea severity. |
1 and 4 months |
|
Secondary |
Change in cognitive function (learning and memory) as measured by the RAVLT from month 1 to month 4 |
Learning and memory assessed through the Rey Auditory Verbal Learning Test (RAVLT), in which participants receive a total learning score (range 0-36), a delayed recall score (range 0-12) and a recognition score (range -12 - +12). In all cases, a higher score indicates better recall. |
1 and 4 months |
|
Secondary |
Change in cognitive function (attention and executive function) as assessed through oral trail tests from month 1 to month 4 |
Attention and executive function assessed through an oral trail test, in which participants are timed between 0 and 300 seconds. A higher time indicates lower attention and executive function. |
1 and 4 months |
|
Secondary |
Change in cognitive function (attention and working memory) as assessed through digit span tests from month 1 to month 4 |
Attention and working memory assessed through a digit span task-forward and backward test. The forward test is scored from 0-16 and the backward test from 0-18, higher scores indicating better attention and memory. |
1 and 4 months |
|
Secondary |
Change in cognitive function (phonemic and semantic fluency) as assessed through letter and category-guided fluency tests from month 1 to month 4 |
Phonemic and semantic fluency assessed through a letter-guided and category-guided fluency test. Scores range from 0-100, with a higher score indicating increased fluency. |
1 and 4 months |
|
Secondary |
Dysautonomia measured through orthostatic hypotension and orthostatic tachycardia |
Orthostatic hypotension and orthostatic tachycardia (decrease in systolic blood pressure of 20 mmHg or decrease in diastolic blood pressure of 10 mmHg after 3 minutes of standing compared to sitting). |
1 month |
|
Secondary |
Dysautonomia measured through orthostatic hypotension and orthostatic tachycardia |
Orthostatic hypotension and orthostatic tachycardia (decrease in systolic blood pressure of 20 mmHg or decrease in diastolic blood pressure of 10 mmHg after 3 minutes of standing compared to sitting). |
4 months |
|
Secondary |
Change in PHQ-9 depression symptoms |
Self-reported measure of depressive symptoms using The Patient Health Questionnaire (PHQ-9). The PHQ-9 is a 9 item scale with a score range of 1-27 with higher scores indicating severe depression. |
1 and 4 months |
|
Secondary |
Change in quality of life as assessed using the Short Form-36 |
Quality of life in the domains of vitality, physical functioning, bodily pain, general health perceptions, physical and emotional and social role functioning, as assessed using the Short Form-36. The Short Form-36 measures physical and mental health using 8 scales. The final score ranges from 0 (worse health status) to 100 (better health status). |
1 and 4 months |
|
Secondary |
Change in insomnia as assessed using the Insomnia Severity Index from month 1 to month 4 |
Presence, severity, and patterns of insomnia, and its interference with daily functioning as assessed by the Insomnia Severity Index. The Insomnia Severity Index is a 7 item scale with a score range of 0-28. A higher score indicates severe insomnia. |
1 and 4 months |
|
Secondary |
Change in anxiety as assessed using the GAD-7 from month 1 to month 4 |
Self-reported measure of anxiety using The Generalized Anxiety Disorder (GAD-7). The GAD-7 is a 7 item instrument used to measure or assess anxiety disorders. The score range is from 0-21. A higher score indicates severe anxiety. |
1 and 4 months |
|
Secondary |
Change in overall mental health as assessed using the CAT-MH from month 1 to month 4 |
Self-reported measures of mental health symptoms (anxiety and depression) using the Computer Adaptive Test-Mental Health (CAT-MH). Scores range from 0-100, with a higher score indicating more severe symptoms. |
1 and 4 months |
|