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Checklist for Individual Strength - Fatigue (CIS)
Availability
Please visit this website for more information about the instrument: Checklist for Individual Strength - Fatigue (CIS)
Classification
Supplemental: Myalgic encephalomyelitis/Chronic fatigue syndrome (ME/CFS)
 
Exploratory: Amyotrophic Lateral Sclerosis (ALS)
Short Description of Instrument
Construct measured: Multidimensional aspects of fatigue
Generic vs. disease specific: Generic
Means of administration: Paper and pencil
Intended respondent: Patient
# of items: CIS20-R (20 items) and CIS- Subjective fatigue (8 items)
# of subscales and names of sub-scales: N/A
# of items per sub-scale: N/A
 
The Checklist for Individual Strength-Fatigue (CIS) is a 20-item self report questionnaire that captures 4 domains of fatigue including subjective experience of fatigue, reduction in motivation, reduction in activity and reduction in concentration. The CIS has demonstrated satisfactory psychometric properties, including high internal consistency and the ability to discriminate healthy individuals.
Comments
This measure assesses fatigue severity (subjective experience of fatigue); concentration problems (mental fatigue); reduced motivation and reduced activity level.
It was developed for use in CFS in Holland. It is available in English, Dutch, Swedish and Korean.
Scoring
Respondents rate the extent to which each statement is true for them in the past two weeks on a seven-point Likert scale ranging from 1 = “Yes, that is true” to 7 = “No, that is not true.”
Consists of 8 items on subjective fatigue, 5 on concentration, 4 on motivation and 3 on activity. Scores are added for each sub-scale.
Rationale/Justification
Strengths/Weaknesses:
ME/CFS-Specific:
 
Advantages: The CIS has been well validated amongst CFS patients and has been widely used in this population, and discriminates between different diseases.
 
Limitations: 17% false positive rates.
 
Psychometric Properties:
The original four-factor structure of the CIS was replicated. Internal consistency (α = 0.84 – 0.95) and test-retest reliability (r = 0.74 – 0.86) of the subscales were high. Correlations with other fatigue scales were moderate to high.
References
Beurskens AJ, Bültmann U, Kant I, Vercoulen JH, Bleijenberg G, Swaen GM. Fatigue among working people: validity of a questionnaire measure. Occup Environ  Med. 2000;57(5):353–357.
 
van Groenestijn AC, van de Port IG, Schröder CD, Post MW, Grupstra HF, Kruitwagen ET, van der Linde H, van Vliet RO, van de Weerd MG, van den Berg LH, Lindeman E. Effects of aerobic exercise therapy and cognitive behavioural therapy on functioning and quality of life in amyotrophic lateral sclerosis: protocol of the FACTS-2-ALS trial. BMC Neurol. 2011;11:70.
 
Vercoulen JH, Hommes OR, Swanink CM, Jongen PJ, Fennis JF, Galama JM, van der Meer JW, Bleijenberg G. The measurement of fatigue in patients with multiple sclerosis. A multidimensional comparison with patients with chronic fatigue syndrome and healthy subjects. Arch Neurol. 1996;53(7):642–649.
 
Vercoulen JH, Swanink CM, Fennis JF, Galama JM, van der Meer JW, Bleijenberg G. Dimensional assessment of chronic fatigue syndrome. J Psychosom Res. 1994;38(5):383–392.
 
Worm-Smeitink M, Gielissen M, Bloot L, van Laarhoven HWM, van Engelen BGM, van Riel P, Bleijenberg G, Nikolaus S, Knoop H. The assessment of fatigue: Psychometric qualities and norms for the Checklist individual strength. J Psychosom Res. 2017;98:40–46.
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