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Volume 6, Issue 4 ( Iranian Journal of Ergonomics 2019)
Iran J Ergon 2019, 6(4): 20-29 |
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Ahmadi Kivanani E, Pouyakian M, Alipour A. Design and Development of a Persian Office Chair Satisfaction Questionnaire. Iran J Ergon 2019; 6 (4) :20-29
URL: http://journal.iehfs.ir/article-1-518-en.html
URL: http://journal.iehfs.ir/article-1-518-en.html
1- Master of Occupational Health and Safety Engineering, Department of Occupational Health Engineering, Faculty of Health and Safety, Shahid Beheshti University of Medical Sciences, Tehran, Iran , Ahmadi_e@sbmu.ac.ir
2- Assistant Professor, Department of Occupational Health and Safety Engineering, School of Public Health and Safety, Shahid Beheshti University of Medical Sciences, Tehran, Iran
3- Associate Professor, Department of Epidemiology, Faculty of Health and Safety, Shahid Beheshti University of Medical Sciences, Tehran, Iran
2- Assistant Professor, Department of Occupational Health and Safety Engineering, School of Public Health and Safety, Shahid Beheshti University of Medical Sciences, Tehran, Iran
3- Associate Professor, Department of Epidemiology, Faculty of Health and Safety, Shahid Beheshti University of Medical Sciences, Tehran, Iran
Abstract: (10321 Views)
Background and Objectives: Accurate measurement of the employees’ satisfaction with their office chairs can provide valid feedback on the chair design quality for the manufacturers and researchers. This study aims to design a valid and psychometrically evaluated questionnaire for measuring satisfaction with office chairs.
Methods: Through studying the two main documents about chair ergonomics including Iranian office chair standard No. 11388-1 and a valid Persian questionnaire on satisfaction with educational chairs (Mirmohammadi et al.), the initial 39-item office chair satisfaction questionnaire has been developed. Then face and content validity of the questionnaire have been checked out using qualitative and quantitative approach. Quantitative face validity was analyzed using impact score method. Content Validity Index (CVI) and Content Validity Ratio (CVR) have been used for quantitative content validity analysis. In order to analyze the questionnaire’s reliability, two methods including the internal consistency and constancy have been applied. To measure the internal consistency, α-Cronbach (alpha coefficient) and to evaluate constancy (test-retest) have been employed. Also, the receiver operating characteristic (ROC) curve was utilized for specifying its sensitivity, specificity, and cut-off point. The data was analyzed by SPSS 21 and Stata V.14
Results: Mean (CVR) and (CVI) of final questionnaire have been calculated as 0.93 and 0.95, respectively. Questionnaire’s α-Cronbach coefficient has been gained 0.8. Kappa coefficient (for inter-rater agreement) has showed high score (0.91) in the test-retest results, indicating high correlation and good constancy of the questionnaire. In the ROC, the cut-off point was reported as 75.5 with the sensitivity and specificity of 86.2 and 100, respectively, and area under the ROC curve at this cut-off point was 0.96.
Conclusion: The final 34-item questionnaire has exhibited acceptable reliability and validity for measuring satisfaction level of office chairs.
Type of Study: Research |
Subject:
Other Cases
Received: 2018/06/18 | Accepted: 2019/01/27 | ePublished: 2019/06/8
Received: 2018/06/18 | Accepted: 2019/01/27 | ePublished: 2019/06/8
References
1. Kuster RP, Bauer CM, Oetiker S, Kool J. Physiological Motion Axis for the Seat of a Dynamic Office Chair. Human factors. 2016;58(6):886-98. [DOI:10.1177/0018720816646508] [PMID] [PMCID]
2. Collins J, O'Sullivan L. Musculoskeletal disorder prevalence and psychosocial risk exposures by age and gender in a cohort of office based employees in two academic institutions. Int J Indust Ergon. 2015;46:85-97. [DOI:10.1016/j.ergon.2014.12.013]
3. Azizipour Y, Hemati F, Sayemiri K. Study of the prevalence of low back pain during Iran: systematic review and meta analysis. J Kurd Uni Med Sci. 2. [Google Scholar]
4. Lale K, Korhan O. Anthropometric computer workstation design to reduce perceived musculoskeletal discomfort. International Conference on Industrial Engineering and Operations Management istanbul. 2013. [Article] [Google Scholar]
5. Sharafi N, Gharibi F, Khobi J. The prevalence of musculoskeletal disorders and their relation with posture work in handmade carpet weavers sanandaj city. J Kurd Uni Med Sci. 2014(19):9-1. [Google Scholar]
6. Janwantanakul P, Sitthipornvorakul E, Paksaichol A. Risk factors for the onset of nonspecific low back pain in office workers: a systematic review of prospective cohort studies. J mani and physiological therapeutics. 2012;35(7):568-77. [DOI:10.1016/j.jmpt.2012.07.008] [PMID]
7. Motamedzade M, Hassan Beigi M, Choobineh A, Mahjoob H. Design and development of an ergonomic chair for iranian office workers. Sient j zanj uni medi sci. 2009;17(68):45-52. [Google Scholar]
8. Synnott A, Dankaerts W, Seghers J, Purtill H, O'Sullivan K. The effect of a dynamic chair on seated energy expenditure. Ergonomics. 2017:1-9. [DOI:10.1080/00140139.2017.1324114] [PMID]
9. Organization NIS. Office furniture - office work chairs -methods for the determination of dimensions. Requirement Dimensions. Geneva.1371. [Google Scholar]
10. Gadge k, Innes E. An investigation into the immediate effects on comfort, productivity and posture of the Bambach™ saddle seat and a standard office chair. Work. 2007;29(3):189-203. [Article]
11. Helander M. Forget about ergonomics in chair design? Focus on aesthetics and comfort! Ergonomics. 2003;46. [DOI:10.1080/00140130310001610847] [PMID]
12. Sirajudeen M, Pillai P. Test-retest reliability of a questionnaire to assess the ergonomic knowledge of computer professionals. Int J Rehabil Health. 2015;4(4):239-43.
https://doi.org/10.5455/ijhrs.000000094 [DOI:10.5455/ijhrs.000000096]
13. Park J, Han S. A fuzzy rule-based approach to modeling affective user satisfaction towards office chair design. Int J Indl Ergon. 2004;34(1):31-47. [DOI:10.1016/j.ergon.2004.01.006]
14. Oliver L. Satisfaction a behavioral perspective on the consumer. Int J Serv Ind Manag. 2010:5. [DOI] [Google Scholar]
15. Mohanty P, Mahapatra S. An integrated approach for designing office chair with ergonomic consideration. Int J Serv Oper Manag. 2014;17(2):194-220. [DOI:10.1504/IJSOM.2014.058843]
16. Hwang S, Choi Y. Modular design of a product to maximize customer satisfaction with respect to body size: A case study for designing office chair. Int J Precis Eng Manuf. 2011;12(5):791. [DOI:10.1007/s12541-011-0105-9]
17. Hosseini M, Khodadadi M, Hoshiar H, Noorbakhsh A. The effect of different classroom chairs on the prevalence of musculoskeletal problems and the rate of students' satisfaction. J Health dev. 2013;4(3 ). [Article] [Google Scholar]
18. Mirmohammadi S, Mehrparvar A, Janaki Alizadeh A. The evaluation of satisfaction of students in hygiene,nursing and paramedical faculties from ergonomic chairs. Occup med Q j. 2015;7(2):74-84. [Article]
19. Mohammadbeigi A, Mohammadsalehi N, Aligol M. Validity and reliability of the instruments and types of measurments in health applied researches. Journal of rafsanjan university of medical sciences. 2015;13(12). [Article]
20. Munro B. Statistical methods for health care research: Lippincott Williams & Wilkins; 2005. [Google]
21. Reisy L, Ziaee S, Mohamadi E, Haji zade E. Designing a Questionnaire for Diagnosis of Vaginismus and Determining its Validity and Reliability. J Mazandaran Univ Med Sci 2015. 2015:81-94. [Article] [Google Scholar]
22. Burns N, Grove S. Understanding Nursing Research-eBook: Building an Evidence-Based Practice: Elsevier Health Sciences; 2010. [Google]
23. Annett J. A note on the validity and reliability of ergonomics methods. 2002. [DOI:10.1080/14639220210124067]
24. Nasl seraji J, Malakoti J. Documentation of Ergonomic Plans in the Workplace. Tehran: Fanavaran. 2012.
25. Sarsangi V. Development and Psychometrics of "Nurses Safety Climate Assessment Questionnaire". Q J Sabz Uni Med Sci. 2015. [Article]
26. Reisy L, Ziaee S, Mohamad E. Designing a questionnaire for diagnosis of vaginismus and determining its validity and reliability. J Mazan Uni Medi Sci. 2015;25(125):81-94. [Article] [Google Scholar]
27. Saane N, Sluiter J, Verbeek J, Frings-Dresen M. Reliability and validity of instruments measuring job satisfaction-a systematic review. Soc Occup Med. 2003;53:191-200. [DOI:10.1093/occmed/kqg038] [PMID]
28. Ansari S, Ghazi A, Varmazyar S. Evaluation of the Reliability and Validity of a Questionnaire Gauging Students' Satisfaction with Training Chairs. J Occup Hyg Eng. 2017;4(2):1-6 . [DOI:10.21859/johe.4.2.1]
29. Sirajudeen MS, Pillai PS. Test-retest reliability of a questionnaire to assess the ergonomic knowledge of computer professionals. Int J Health Reh Sci. 2015;4(4):239-43.
https://doi.org/10.5455/ijhrs.000000094 [DOI:10.5455/ijhrs.000000096]
30. Shimabukuro VG, Alexandre NM, Coluci MZ, Rosecrance JC, Gallani MJ. Validity and reliability of a job factors questionnaire related to the work tasks of physical therapists. Int J Occup Safe Ergono. 2012;18(1):15-26. [DOI:10.1080/10803548.2012.11076911] [PMID]
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