F1026-C11932
C11932
Modified Fatigue Impact Scale (MFIS) - psychosocial score
Sum of MFIS Psychosocial items (range: 0-8)
Exploratory
Modified Fatigue Impact Scale (MFIS)
False
Myalgic Encephalomyelitis/Chronic Fatigue Syndrome
Myalgic Encephalomyelitis/Chronic Fatigue Syndrome
F2170-C08505
C08505
36-item Short Form Health Survey (SF-36) - Health limited carrying groceries score
Score of surveyee-reported limited lifting or carrying groceries 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
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
F1807-C00015
C00015
Education year count
Number of years of education completed (age 5 and beyond)
Supplemental-Highly Recommended
General Core
False
Myalgic Encephalomyelitis/Chronic Fatigue Syndrome
Myalgic Encephalomyelitis/Chronic Fatigue Syndrome
F2170-C08513
C08513
36-item Short Form Health Survey (SF-36) - Cut time on work activities physical health indicator
Indicator for surveyee-reported cut down time on work or other activities as a result of physical health during 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
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
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
F1026-C11916
C11916
Modified Fatigue Impact Scale (MFIS) - less motivate social activity score
Scale for having been less motivated to participate in social 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
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
F2170-C08506
C08506
36-item Short Form Health Survey (SF-36) - Health limited climbing several stairs score
Score of surveyee-reported limited climbing several flights of stairs 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
F2170-C08514
C08514
36-item Short Form Health Survey (SF-36) - Less accomplished physical health indicator
Indicator for surveyee-reported less accomplishment as a result of physical health during 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-C08522
C08522
36-item Short Form Health Survey (SF-36) - Pain interfere work score
Score of bodily pain interfering with work (in home and outside) 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-C08530
C08530
36-item Short Form Health Survey (SF-36) - Times happy score
Score of times being a happy person 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-C08507
C08507
36-item Short Form Health Survey (SF-36) - Health limited climbing one stair score
Score of surveyee-reported limited climbing one flight of stairs 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
F2170-C08515
C08515
36-item Short Form Health Survey (SF-36) - Limited work activities physical health indicator
Indicator for surveyee-reported limited work or activities as a result of physical health during 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-C08523
C08523
36-item Short Form Health Survey (SF-36) - Times pep score
Score of times feeling full of pep 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-C08531
C08531
36-item Short Form Health Survey (SF-36) - Times tired score
Score of times feeling tired 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-C08508
C08508
36-item Short Form Health Survey (SF-36) - Health limited bending kneeling stooping score
Score of surveyee-reported limited bending, kneeling, or stooping 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
F2170-C08524
C08524
36-item Short Form Health Survey (SF-36) - Times nervous score
Score of times being a very nervous person 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-C08532
C08532
36-item Short Form Health Survey (SF-36) - Times interfered social physical or emotional score
Score of times physical health or emotional problems interfered with social activities (like visiting with friends, relatives, etc) 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-C08500
C08500
36-item Short Form Health Survey (SF-36) - General health score
Score of surveyee-reported general 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
F2170-C08509
C08509
36-item Short Form Health Survey (SF-36) - Health limited walking miles score
Score of surveyee-reported limited walking more than one mile 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
F2170-C08525
C08525
36-item Short Form Health Survey (SF-36) - Times down score
Score of times feeling so down in the dumps that nothing could cheer up 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