F2714-C09641
C09641
Fatigue Severity Scale (FSS) - easy fatigue scale
Scale used to describe the extent to which the patient was easily fatigued in the past week, as part of the Fatigue Severity Scale (FSS)
Supplemental-Highly Recommended
Fatigue Severity Scale (FSS)
True
Myalgic Encephalomyelitis/Chronic Fatigue Syndrome
Myalgic Encephalomyelitis/Chronic Fatigue Syndrome
F1026-C11920
C11920
Modified Fatigue Impact Scale (MFIS) - less motivate activity require think score
Scale for having been less motivated to do anything that requires thinking as part of Modified Fatigue Impact Scale form
Exploratory
Modified Fatigue Impact Scale (MFIS)
False
Myalgic Encephalomyelitis/Chronic Fatigue Syndrome
Myalgic Encephalomyelitis/Chronic Fatigue Syndrome
F2715-C11631
C11631
Checklist Individual Strength (CIS20R) - tired feeling scale
Scale assessing the extent to which the following statement has been true for the participant during the last two weeks: I feel tired. Part of the Checklist Individual Strength (CIS20R) questionnaire
Supplemental
Checklist for Individual Strength - Fatigue (CIS)
True
Myalgic Encephalomyelitis/Chronic Fatigue Syndrome
Myalgic Encephalomyelitis/Chronic Fatigue Syndrome
F1026-C11928
C11928
Modified Fatigue Impact Scale (MFIS) - limit physical activity score
Scale for having limited physical activities as part of Modified Fatigue Impact Scale form
Exploratory
Modified Fatigue Impact Scale (MFIS)
False
Myalgic Encephalomyelitis/Chronic Fatigue Syndrome
Myalgic Encephalomyelitis/Chronic Fatigue Syndrome
F2754-C17859
C17859
Imaging voxel size axis 3 measurement
Measurement, in millimeters, of the axis 3 dimension of the voxel within the anatomy of interest
Supplemental-Highly Recommended
Positron Emission Tomography (PET)
False
Myalgic Encephalomyelitis/Chronic Fatigue Syndrome
Myalgic Encephalomyelitis/Chronic Fatigue Syndrome
F2715-C11639
C11639
Checklist Individual Strength (CIS20R) - powerless feeling scale
Scale assessing the extent to which the following statement has been true for the participant during the last two weeks: I feel powerless. Part of the Checklist Individual Strength (CIS20R) questionnaire
Supplemental
Checklist for Individual Strength - Fatigue (CIS)
True
Myalgic Encephalomyelitis/Chronic Fatigue Syndrome
Myalgic Encephalomyelitis/Chronic Fatigue Syndrome
F1026-C17826
C17826
Modified Fatigue Impact Scale-5-Item Version (MFIS-5) - limited ability away home scale
Scale for having been limited in the ability to do things away from home as part of Modified Fatigue Impact Scale 5-Item Version (MFIS-5) form
Exploratory
Modified Fatigue Impact Scale (MFIS)
False
Myalgic Encephalomyelitis/Chronic Fatigue Syndrome
Myalgic Encephalomyelitis/Chronic Fatigue Syndrome
F2715-C11647
C11647
Checklist Individual Strength (CIS20R) - done little activity scale
Scale assessing the extent to which the following statement has been true for the participant during the last two weeks: I get little done. Part of the Checklist Individual Strength (CIS20R) questionnaire
Supplemental
Checklist for Individual Strength - Fatigue (CIS)
True
Myalgic Encephalomyelitis/Chronic Fatigue Syndrome
Myalgic Encephalomyelitis/Chronic Fatigue Syndrome
F2799-C10859
C10859
Grip strength fatigue percent target value
Value of (the percentage of) target grip strength for which grip hold duration is being measured in the grip strength fatigue trial being recorded
Exploratory
Grip Strength Fatigue
False
Myalgic Encephalomyelitis/Chronic Fatigue Syndrome
Myalgic Encephalomyelitis/Chronic Fatigue Syndrome
F2170-C08526
C08526
36-item Short Form Health Survey (SF-36) - Times calm peaceful score
Score of times feeling calm and peaceful during the past 4 weeks as part of version 1.0 of 36-item Short Form Health Survey (SF-36)
Supplemental-Highly Recommended
Short Form 36-Item Health Survey (SF-36)
True
Myalgic Encephalomyelitis/Chronic Fatigue Syndrome
Myalgic Encephalomyelitis/Chronic Fatigue Syndrome
F2170-C08534
C08534
36-item Short Form Health Survey (SF-36) - Healthy as anybody score
Score of how true or false surveyee perceived the statement: I am as healthy as anybody I know, as part of version 1.0 of 36-item Short Form Health Survey (SF-36)
Supplemental-Highly Recommended
Short Form 36-Item Health Survey (SF-36)
True
Myalgic Encephalomyelitis/Chronic Fatigue Syndrome
Myalgic Encephalomyelitis/Chronic Fatigue Syndrome
F2170-C08510
C08510
36-item Short Form Health Survey (SF-36) - Health limited walking several blocks score
Score of surveyee-reported limited walking several blocks due to physical health as part of version 1.0 of 36-item Short Form Health Survey (SF-36)
Supplemental-Highly Recommended
Short Form 36-Item Health Survey (SF-36)
True
Myalgic Encephalomyelitis/Chronic Fatigue Syndrome
Myalgic Encephalomyelitis/Chronic Fatigue Syndrome
F2753-C17798
C17798
Imaging contrast agent name
Name of imaging contrast agent used
Supplemental-Highly Recommended
Magnetic Resonance Imaging (MRI)
False
Myalgic Encephalomyelitis/Chronic Fatigue Syndrome
Myalgic Encephalomyelitis/Chronic Fatigue Syndrome
F1026-C11913
C11913
Modified Fatigue Impact Scale (MFIS) - forgetful score
Scale for having been forgetful as part of Modified Fatigue Impact Scale form
Exploratory
Modified Fatigue Impact Scale (MFIS)
False
Myalgic Encephalomyelitis/Chronic Fatigue Syndrome
Myalgic Encephalomyelitis/Chronic Fatigue Syndrome
F2754-C58547
C58547
Imaging matrix size axis 3 measurement
Measurement, in voxels, of the axis 3 dimension of the matrix within the anatomy of interest
Supplemental-Highly Recommended
Positron Emission Tomography (PET)
False
Myalgic Encephalomyelitis/Chronic Fatigue Syndrome
Myalgic Encephalomyelitis/Chronic Fatigue Syndrome
F2714-C09642
C09642
Fatigue Severity Scale (FSS) - interfere physical function scale
Scale used to describe the extent to which fatigue interfered with the patient's physical functioning in the past week, as part of the Fatigue Severity Scale (FSS)
Supplemental-Highly Recommended
Fatigue Severity Scale (FSS)
True
Myalgic Encephalomyelitis/Chronic Fatigue Syndrome
Myalgic Encephalomyelitis/Chronic Fatigue Syndrome
F1026-C11921
C11921
Modified Fatigue Impact Scale (MFIS) - muscle weak score
Scale for feeling weak in muscles as part of Modified Fatigue Impact Scale form
Exploratory
Modified Fatigue Impact Scale (MFIS)
False
Myalgic Encephalomyelitis/Chronic Fatigue Syndrome
Myalgic Encephalomyelitis/Chronic Fatigue Syndrome
F2715-C11632
C11632
Checklist Individual Strength (CIS20R) - active feeling scale
Scale assessing the extent to which the following statement has been true for the participant during the last two weeks: I feel very active. Part of the Checklist Individual Strength (CIS20R) questionnaire
Supplemental
Checklist for Individual Strength - Fatigue (CIS)
True
Myalgic Encephalomyelitis/Chronic Fatigue Syndrome
Myalgic Encephalomyelitis/Chronic Fatigue Syndrome
F1026-C11929
C11929
Modified Fatigue Impact Scale (MFIS) - rest more often longer score
Scale for having needed to rest more often or for longer periods as part of Modified Fatigue Impact Scale form
Exploratory
Modified Fatigue Impact Scale (MFIS)
False
Myalgic Encephalomyelitis/Chronic Fatigue Syndrome
Myalgic Encephalomyelitis/Chronic Fatigue Syndrome
F2715-C11640
C11640
Checklist Individual Strength (CIS20R) - low activity daily scale
Scale assessing the extent to which the following statement has been true for the participant during the last two weeks: I think I do very little in a day. Part of the Checklist Individual Strength (CIS20R) questionnaire
Supplemental
Checklist for Individual Strength - Fatigue (CIS)
True
Myalgic Encephalomyelitis/Chronic Fatigue Syndrome
Myalgic Encephalomyelitis/Chronic Fatigue Syndrome
F1026-C17827
C17827
Modified Fatigue Impact Scale-5-Item Version (MFIS-5) - trouble concentrating scale
Scale for having had trouble concentrating as part of Modified Fatigue Impact Scale 5-Item Version (MFIS-5) form
Exploratory
Modified Fatigue Impact Scale (MFIS)
False
Myalgic Encephalomyelitis/Chronic Fatigue Syndrome
Myalgic Encephalomyelitis/Chronic Fatigue Syndrome
F2715-C11648
C11648
Checklist Individual Strength (CIS20R) - activity interest low scale
Scale assessing the extent to which the following statement has been true for the participant during the last two weeks: I don't feel like doing anything. Part of the Checklist Individual Strength (CIS20R) questionnaire
Supplemental
Checklist for Individual Strength - Fatigue (CIS)
True
Myalgic Encephalomyelitis/Chronic Fatigue Syndrome
Myalgic Encephalomyelitis/Chronic Fatigue Syndrome
F2799-C10860
C10860
Grip strength fatigue percent target hold duration
Duration in seconds that the participant was able to hold the grip device at the indicated percentage of the target value in the grip strength fatigue trial being recorded
Exploratory
Grip Strength Fatigue
False
Myalgic Encephalomyelitis/Chronic Fatigue Syndrome
Myalgic Encephalomyelitis/Chronic Fatigue Syndrome
F2756-C10838
C10838
Imaging voxel size axis 1 measurement
Measurement, in millimeters, of the axis 1 dimension of the voxel within the anatomy of interest
Supplemental-Highly Recommended
Functional Magnetic Resonance Imaging (fMRI)
False
Myalgic Encephalomyelitis/Chronic Fatigue Syndrome
Myalgic Encephalomyelitis/Chronic Fatigue Syndrome
F2170-C08519
C08519
36-item Short Form Health Survey (SF-36) - Work not carefully emotional problems indicator
Indicator for surveyee-reported doing work or other activities not as carefully as usual as a result of emotional problems during the past 4 weeks as part of version 1.0 of 36-item Short Form Health Survey (SF-36)
Supplemental-Highly Recommended
Short Form 36-Item Health Survey (SF-36)
True
Myalgic Encephalomyelitis/Chronic Fatigue Syndrome
Myalgic Encephalomyelitis/Chronic Fatigue Syndrome