Name Steward Organization Suggested Domain Suggested Domain Description Cde Group Classification
Bell fatigue scale NINDS Health assessment
e.g., Activities of Daily Living (ADL), Instrumental ADL, cognitive function, etc.
NIH CDEs
  • NINDS
    • Disease
      • Myalgic Encephalomyelitis/Chronic Fatigue Syndrome
        • Classification
          • Exploratory
        • Domain
          • Outcomes and End Points
            • Quality of Life/Patient Reported Outcomes
      • Neuromuscular Diseases
        • Classification
          • Exploratory
        • Domain
          • Outcomes and End Points
            • Quality of Life/Patient Reported Outcomes
    • Domain
      • Outcomes and End Points
        • Quality of Life/Patient Reported Outcomes
    • Population
      • Adult

# Datatype
Value List

# Permissible value Value meaning name Value meaning definition
0 Severe symptoms on a continuous basis, bedridden constantly, unable to care for self Severe symptoms on a continuous basis, bedridden constantly, unable to care for self
10 Severe symptoms at rest, bedridden the majority of the time. No travel outside of the house. Marked cognitive symptoms preventing concentration Severe symptoms at rest, bedridden the majority of the time. No travel outside of the house. Marked cognitive symptoms preventing concentration
20 Moderate to severe symptoms at rest. Unable to perform strenuous activity, overall activity 30-50% of expected. Unable to leave house except rarely, confined to bed most of day, unable to concentrate for more than 1 hour a day Moderate to severe symptoms at rest. Unable to perform strenuous activity, overall activity 30-50% of expected. Unable to leave house except rarely, confined to bed most of day, unable to concentrate for more than 1 hour a day
30 Moderate to severe symptoms at rest. Severe symptoms with any exercise. Overeall activity level reduced to 50% of expected. Usually confined to house. Unable to perform any strenuous tasks. Able to perform desk work 2-3 hours a day, but requires rest periods Moderate to severe symptoms at rest. Severe symptoms with any exercise. Overeall activity level reduced to 50% of expected. Usually confined to house. Unable to perform any strenuous tasks. Able to perform desk work 2-3 hours a day, but requires rest periods
40 Moderate symptoms at rest. Moderate to severe symptoms with exercise or activity, overall activity level reduced to 50%-70% of expected. Not confined to house. Unable to perform strenuous duties, able to perform light duty or desk work 3-4 hours a day, but requires rest periods Moderate symptoms at rest. Moderate to severe symptoms with exercise or activity, overall activity level reduced to 50%-70% of expected. Not confined to house. Unable to perform strenuous duties, able to perform light duty or desk work 3-4 hours a day, but requires rest periods
50 Moderate symptoms at rest. Moderate to severe symptoms with exercise or activity, overall activity level reduced to 70% of expected. Unable to perform strenuous duties, but able to perform light duty or desk work 4-5 hours a day, but requires rest periods Moderate symptoms at rest. Moderate to severe symptoms with exercise or activity, overall activity level reduced to 70% of expected. Unable to perform strenuous duties, but able to perform light duty or desk work 4-5 hours a day, but requires rest periods
60 Mild to moderate symptoms at rest, daily activity limitation clearly noted. Overall functioning 70%-90%. Unable to work full-time in jobs requiring physical labor, but able to work full-time in light activity if hours flexible Mild to moderate symptoms at rest, daily activity limitation clearly noted. Overall functioning 70%-90%. Unable to work full-time in jobs requiring physical labor, but able to work full-time in light activity if hours flexible
70 Mild symptoms at rest, some daily activity limitation clearly noted. Overall functioning close to 90% of expected except for activities requiring exertion. Able to work full-time with difficulty Mild symptoms at rest, some daily activity limitation clearly noted. Overall functioning close to 90% of expected except for activities requiring exertion. Able to work full-time with difficulty
80 Mild symptoms at rest, symptoms worsened by exertion, minimal activity restriction noted for activities requiring exertion only, able to work full-time with difficulty in jobs requiring exertion Mild symptoms at rest, symptoms worsened by exertion, minimal activity restriction noted for activities requiring exertion only, able to work full-time with difficulty in jobs requiring exertion
90 No symptoms at rest, mild symptoms with activity, normal overall activity level, able to work full-time without difficulty No symptoms at rest, mild symptoms with activity, normal overall activity level, able to work full-time without difficulty
100 No fatigue symptoms at rest, no symptoms with exercise, normal overall activity level, able to work full-time without difficulty No fatigue symptoms at rest, no symptoms with exercise, normal overall activity level, able to work full-time without difficulty

# Definition
Scale used within the Bell Fatigue Scale

# Designation
Bell fatigue scale

# Identifier Origin Version
QJbSliKT6I NLM CDEs 12-02-2025-download
BllFtgScl BRICS Variable Name N/A
C57260 NINDS 1