A Vietnamese version of the 14-item oral health impact profile (OHIP-14VN)

Anneloes E. Gerritsen, Thoa C. Nguyen, Dick J. Witter, Ewald M. Bronkhorst, Nico H. J. Creugers

Department of Community and Restorative Dentistry, College of Dental Science, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands.
Department of Oral Function and Prosthetic Dentistry, College of Dental Science, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands.
Department of Prosthodontics, Faculty of Dentistry, Cantho University of Medicine and Pharmacy, Cantho, Vietnam.

DOI: 10.4236/ojepi.2012.21005                

Abstract

Aim: To validate a Vietnamese short version (OHIP- 14VN) for use in epidemiological studies. Methods: The original English-language version was translated into Vietnamese, back translated and after some revisions tested for psychometric properties. Subjects (n = 724) were asked to self-administer a questionnaire but could ask for assistance. Convergent validity was tested by investigating associations between OHIP domain and total scores, and dichotomized self-reported satisfaction with 1) the dentition in general, 2) chewing function, and 3) esthetics. Groups validity was evaluated by comparing OHIP scores of subjects having ≤6 molars vs. >6 molars and tooth decay vs. no decay. Test-retest reliability was investigated in a convenience sample (n = 54) and expressed in Intraclass Correlation Coefficients (ICCs). Internal consistency was assessed by Cronbach’s alpha and average interitem correlation coefficients. Results: Validity: all associations were in the hypothesized directions. Differences in mean OHIP total were statistically sig-nificant for all discriminative variables. OHIP scores completed with assistance were significantly lower than those from self-administered questionnaires and therefore analyzed separately. For both administration formats differences in mean scores were still significant for “satisfaction” but for having ≤6 molars or decay the differences lost significance for most domain and total scores. Reliability: ICCs ranged from 0.54 - 0.74. Internal consistency: Cronbach’s alphas for OHIP total scores were 0.93 (self-administered) and 0.91 (with assistance). Average interitem correlation coefficients ranged from 0.26 - 0.67 (self-administered) and 0.28 - 0.69 (with assistance). Conclusions: This Vietnamese version of the OHIP-14 demonstrated good construct validity and acceptable reliability for OHIP total scores however OHIP-14VN domain scores should be interpreted with caution.

Keywords

Oral Health Impact Profile; OHIP-14;Vietnamese Version; Validation; Administration Format

Conflicts of Interest

The authors declare no conflicts of interest.

References

[1]	Allen, P.F. (2003) Assessment of oral health related quality of life. Health and Quality of Life Outcomes, 1, 40. http://www.hqlo.com/content/1/1/40
[2]	Locker, D. and Allen, P.F. (2007) What do measures of “oral health-related quality of life” measure? Community Dentistry Oral Epidemiology, 35, 401-411. doi:10.1111/j.1600-0528.2007.00418.x
[3]	Brondani, M.A. and MacEntee, M.I. (2007) The concept of validity in soci-odental indicators and oral health-re- lated quality-of-life measures. Community Dentistry Oral Epidemiology, 35, 472-478. doi:10.1111/j.1600-0528.2006.00361.x
[4]	Locker, D. (1988) Measuring oral health: A conceptual framework. Community Dentistry Oral Epidemiology, 5, 3-18.
[5]	Slade, G.D. and Spencer, A.J. (1994) Development and evaluation of the oral health impact profile. Community Dental Health, 11, 3-11.
[6]	John, M.T., Patrick, D.L. and Slade, G.D. (2002) The German version of the oral health impact profile— Trans-lation and psychometric properties. European Journal of Oral Sciences, 110, 425-433. doi:10.1034/j.1600-0722.2002.21363.x
[7]	Larsson, P., List, T., Lundstrom, I., Marcusson, A. and Ohrbach, R. (2004) Re-liability and validity of a Swedish version of the oral health impact profile (OHIP-S). Acta Odontologica Scandinavia, 62, 147-152. doi:10.1080/00016350410001496
[8]	Pires, C.P., Ferraz, M.B. and de Abreu, M.H. (2006) Translation into Brazilian Portuguese, cultural adaptation and validation of the oral health impact profile (OHIP-49). Brazilian Oral Research, 20, 263-268. doi:10.1590/S1806-83242006000300015
[9]	van der Meulen, M.J., John, M.T., Naeije, M. and Lobbezoo, F. (2008) The Dutch version of the oral health impact profile (OHIP-NL): Translation, reliability and construct validity. BMC Oral Health, 8, 11. doi:10.1186/1472-6831-8-11
[10]	Wong, M.C., Lo, E.C. and McMillan, A.S. (2002) Validation of a Chinese version of the oral health impact profile (OHIP). Community Dentistry Oral Epidemiology, 30, 423-430. doi:10.1034/j.1600-0528.2002.00013.x
[11]	Slade, G.D. (1997) Derivation and validation of a short- form oral health impact profile. Community Dentistry Oral Epidemiology, 25, 284-290. doi:10.1111/j.1600-0528.1997.tb00941.x
[12]	Ravaghi, V., Farrahi-Avval, N., Locker, D. and Underwood, M. (2010) Va-lidation of the Persian short version of the oral health impact profile (OHIP-14). Oral Health & Preventive Dentistry, 8, 229-235.
[13]	Fernandes, M.J., Ruta, D.A., Ogden, G.R., Pitts, N.B. and Ogston, S.A. (2006) Assessing oral health-related quality of life in general dental practice in Scotland: Validation of the OHIP-14. Community Dentistry Oral Epidemiology, 34, 53-62. doi:10.1111/j.1600-0528.2006.00254.x
[14]	John, M.T., Mig-lioretti, D.L., LeResche, L., Koepsell, T.D., Hujoel, P. and Micheelis, W. (2006) German short forms of the oral health impact profile. Community Dentistry Oral Epidemiology, 34, 277-288. doi:10.1111/j.1600-0528.2006.00279.x
[15]	Kushnir, D., Zusman, S.P. and Robinson, P.G. (2004) Validation of a He-brew version of the oral health impact profile 14. Journal of Public Health Dentistry, 64, 71-75. doi:10.1111/j.1752-7325.2004.tb02730.x
[16]	Rener-Sitar, K., Petricevic, N., Celebic, A. and Marion, L. (2008) Psychometric properties of Croatian and Slovenian short form of oral health impact profile questionnaires. Croatian Medical Journal, 49, 536-544. doi:10.3325/cmj.2008.4.536
[17]	Saub, R., Locker, D. and Allison, P. (2005) Derivation and validation of the short version of the Malaysian oral health impact profile. Community Dentistry Oral Epidemiology, 33, 378-383. doi:10.1111/j.1600-0528.2005.00242.x
[18]	Guillemin, F., Bombardier, C. and Beaton, D. (1993) Cross-cultural adaptation of health-related quality of life measures: Literature review and proposed guidelines. Journal of Clinical Epidemiology, 46, 1417-1432. doi:10.1016/0895-4356(93)90142-N
[19]	Nguyen T.C., Witter D.J., Bronkhorst E.M., Truong N.B. and Creugers N.H.J. (2010) Oral health status of adults in Southern Vietnam—A cross-sectional epidemiological study. BMC Oral Health, 10, 2. doi:10.1186/1472-6831-10-2
[20]	World Health Organization. (1997) Indices and methods for measurement of dental diseases, WHO oral health surveys. http://www.whocollab.od.mah.se/expl/methods.html
[21]	Bartko, J.J. (1966) The intraclass correlation coefficient as a measure of reliability. Psychological Reports, 19, 3-11. doi:10.2466/pr0.1966.19.1.3
[22]	Fleiss, J.L. (1986) The de-sign and analysis of clinical experiments. John Wiley & Sons, New York.
[23]	Bland, J.M. and Altman, D.G. (1997) Cron-bach’s alpha. British Medical Journal, 314, 572. doi:10.1136/bmj.314.7080.572
[24]	Clark, L.A. and Watson, D. (1995) Constructing validity: Basic issues in objective scale development. Psychological Assessment, 7, 309-319. doi:10.1037/1040-3590.7.3.309
[25]	General Statistics Office of Vietnam. http://www.gso.gov.vn/default_en.aspx?tabid=483&idmid=4&ItemID=4343
[26]	Puhan, M. A., Ahuja, A., Van Natta, M. L., Ackatz, L. E., and Meinert, C. (2011) Interviewer versus self-admini- stered health-related quality of life question-naires—Does it matter? Health and Quality of Life Outcomes, 9, 30. doi:10.1186/1477-7525-9-30
[27]	Bowling, A. (2005) Mode of questionnaire administration can have serious effects on data quality, Journal of Public Health (Oxf), 27, 281-291. doi:10.1093/pubmed/fdi031
[28]	Robinson, P.G., Gibson, B., Khan, F.A. and Birnbaum, W. (2001) A comparison of OHIP 14 and OIDP as interviews and questionnaires. Community Dental Health, 18, 144- 149.