Development of Japanese Version of the Checklist Individual Strength Questionnaire in a Working Population

Abstract

Development of Japanese Version of the Checklist Individual Strength Questionnaire in a Working Population: Yutaka Aratake, et al. Department of Occupational Mental Healthl, Graduate School of Medical Sciences, Kitasato University—The aims of the present study were to develop and validate the Japanese version of the checklist individual strength questionnaire (CIS) which is used to measure prolonged fatigue not only in the general population but also in the working population. We obtained permission to use CIS from its author and translated the questionnaire into Japanese. Then, the Japanese version of the questionnaire was translated back into English by a bilingual person. The author of the original version agreed that the back‐translated version was conceptually and linguistically equivalent to the original CIS. To validate CIS, 399 workers (66.7% were men) from different companies answered the Japanese version of the CIS (CIS‐J), Maslach burnout inventory‐general survey (MBI‐GS), Beck Depression Inventory‐II (BDI‐II), visual analogue scale (VAS) questionnaires for subjective fatigue, number of overtime hours and number of hours of sleep. Cronbach's α for the total CIS‐J score was 0.91. The test‐retest reliability assessed with an intra‐class correlation coefficient was 0.82. Although confirmatory factor analysis did not show an ideal model fit, the correlation coefficients between the total CIS score and the MBI‐GS exhaustion score, the BDI‐II score and the VAS score were 0.58 (p<0.01), 0.66 (p<0.01) and 0.63 (p<0.01), respectively. The less workers slept and the longer they worked, the higher their total CIS score became. CIS‐J showed good reliability and acceptable validity in the working population. Thus, it could be useful for studying fatigue among Japanese working populations.

Factors of Working Conditions and Prolonged Fatigue among Teachers at Public Elementary and Junior High Schools

“…A total CIS score of over 76 has been shown to be related to a tendency to take sick leave and for work disability 19,24) . The mean CIS score in this study was 76.7 (SD=18.4) for men and 80.8 (SD=17.4) for women; this may suggest that the sample in the present study, namely teachers replying to our questionnaire, showed a higher prolonged fatigue level compared with the overall population.…”

“…The Japanese version of the checklist individual strength (CIS) questionnaire was used to measure prolonged fatigue 18,19) . The CIS has four subscales (subjective feeling of fatigue, concentration, motivation, and physical activity) and consists of 20 questions.…”

Brief Morning Exposure to Bright Light Improves Subjective Symptoms and Performance in Nurses with Rapidly Rotating Shifts

“…Participants were instructed to note their selfassessment of night sleep for day-shift days on the following morning. Fatigue was assessed using the Checklist Individual Strength (CIS) questionnaire 28,29) .…”

Effect of Brief Sleep Hygiene Education for Workers of an Information Technology Company

“…The Japanese version of the checklist has been shown to be satisfactorily reliable and valid for assessing fatigue among a Japanese population 30,31) . The CIS is a questionnaire about fatigue developed by Vercoulen et al that is widely used all over the world.…”