J Korean Med Sci.  2016 Feb;31(2):159-163. 10.3346/jkms.2016.31.2.159.

Validation of the Korean Version of Schedule of Fatigue and Anergia: General Physician Questionnaire

• Kim S
• Bae WK
• Kim JY
• Jang M
• Kim JH
• Noh HH

• KMID: 2360036
• DOI: http://doi.org/10.3346/jkms.2016.31.2.159

Abstract

The Schedule of Fatigue and Anergy/General Physician (SOFA/GP) was developed to screen for prolonged fatigue in the primary care setting. We aimed to evaluate the reliability and validity of the Korean version of the SOFA/GP (SOFA/GP-K), which is adapted from the original English version. We performed translation and back translation, and after conducting a pilot study, we tested the final version of the questionnaire for its reliability and validity in a Korean primary care setting. Two hundred participants that visited a health examination center in a university hospital completed the survey between September and November 2012. A second survey was performed within 2 weeks of the primary survey to test for reliability. We evaluated concurrent validity between the SOFA/GP-K score, the Fatigue Severity Scale (FSS), and Brief Fatigue Index (BFI) scores. The Spearman correlation coefficient between SOFA/GP-K and FSS was 0.71 and 0.61 between SOFA/GP-K and BFI. Internal consistency of SOFA/GP-K was observed (Cronbach's alpha = 0.82) and construct validity was confirmed by factor analysis. The Kappa scores for test-retest reliability for each survey item were between 0.28 and 0.64. The SOFA/GP-K is a valid and reliable questionnaire for screening fatigue in a primary care setting.

Keyword

Fatigue; Anergia; Korean; Primary Health Care; Validation; Scale

MeSH Terms

Adult
Aged
Fatigue/metabolism/*pathology
Female
Humans
Male
Middle Aged
Pilot Projects
Practice Guidelines as Topic/*standards
Republic of Korea
Severity of Illness Index
Surveys and Questionnaires
Translating
Young Adult

Reference

1. Dittner AJ, Wessely SC, Brown RG. The assessment of fatigue: a practical guide for clinicians and researchers. J Psychosom Res. 2004; 56:157–170.

2. Kim CH, Shin HC, Won CW. Prevalence of chronic fatigue and chronic fatigue syndrome in Korea: community-based primary care study. J Korean Med Sci. 2005; 20:529–534.

3. Hotopf M, Wessely S. Chronic fatigue syndrome--mapping the interior. Psychol Med. 1999; 29:255–258.

4. Hadzi-Pavlovic D, Hickie IB, Wilson AJ, Davenport TA, Lloyd AR, Wakefield D. Screening for prolonged fatigue syndromes: validation of the SOFA scale. Soc Psychiatry Psychiatr Epidemiol. 2000; 35:471–479.

5. Elnicki DM, Shockcor WT, Brick JE, Beynon D. Evaluating the complaint of fatigue in primary care: diagnoses and outcomes. Am J Med. 1992; 93:303–306.

6. Yun YH, Wang XS, Lee JS, Roh JW, Lee CG, Lee WS, Lee KS, Bang SM, Mendoza TR, Cleeland CS. Validation study of the korean version of the brief fatigue inventory. J Pain Symptom Manage. 2005; 29:165–172.

7. Lee JH, Jeong HS, Lim SM, Cho HB, Ma JY, Ko E, Im JJ, Lee SH, Bae S, Lee YJ, et al. Reliability and validity of the fatigue severity scale among university student in South Korea. Korean J Biol Psychiatry. 2013; 20:6–11.

8. Krupp LB, LaRocca NG, Muir-Nash J, Steinberg AD. The fatigue severity scale. Application to patients with multiple sclerosis and systemic lupus erythematosus. Arch Neurol. 1989; 46:1121–1123.

9. Yun YH, Lee MK, Chun HN, Lee YM, Park SM, Mendoza TR, Wang XS, Cleeland CS. Fatigue in the general Korean population: application and normative data of the Brief Fatigue Inventory. J Pain Symptom Manage. 2008; 36:259–267.

10. Cho HJ, Costa E, Menezes PR, Chalder T, Bhugra D, Wessely S. Cross-cultural validation of the Chalder Fatigue Questionnaire in Brazilian primary care. J Psychosom Res. 2007; 62:301–304.

11. Kim KN, Park JY, Shin TS, Jun KJ, Choi EY, Kim HJ, Lee SH, Yoo TW, Huh BY. Degree of stress and stress-related factors by the Korean version of the BEPSI. J Korean Acad Fam Med. 1998; 19:559–570.

12. Guillemin F, Bombardier C, Beaton D. Cross-cultural adaptation of health-related quality of life measures: literature review and proposed guidelines. J Clin Epidemiol. 1993; 46:1417–1432.

13. Mendoza TR, Wang XS, Cleeland CS, Morrissey M, Johnson BA, Wendt JK, Huber SL. The rapid assessment of fatigue severity in cancer patients: use of the Brief Fatigue Inventory. Cancer. 1999; 85:1186–1196.

14. Anton HA, Miller WC, Townson AF. Measuring fatigue in persons with spinal cord injury. Arch Phys Med Rehabil. 2008; 89:538–542.

15. Herlofson K, Larsen JP. Measuring fatigue in patients with Parkinson's disease - the Fatigue Severity Scale. Eur J Neurol. 2002; 9:595–600.

16. Viera AJ, Garrett JM. Understanding interobserver agreement: the kappa statistic. Fam Med. 2005; 37:360–363.

17. Hasson D, Arnetz BB. Validation and findings comparing VAS vs. Likert scales for psychosocial measurements. Int Electron J Health Educ. 2005; 8:178–192.

18. Chung KI, Song CH. Clinical usefulness of Fatigue Severity Scale for patients with fatigue, and anxiety or depression. Korean J Psychosom Med. 2001; 9:164–173.