Validity of self-reported number of teeth and oral health variables

BMC Oral Health

Research Article

Fumitaro Miyatani¹  Narisato Kanamura¹  Toshiro Yamamoto¹  Masaru Nishigaki¹  Isao Watanabe²  Teruhide Koyama²  Yoshiyuki Watanabe²  Etsuko Ozaki²  Daisuke Matsui²  Nagato Kuriyama² 

[1] Department of Dental Medicine, Kyoto Prefectural University of Medicine, Graduate School of Medical Science, 465 Kajii-cho, 602-0841, Kamigyo-ku, Kyoto, Japan;Department of Epidemiology for Community Health and Medicine, Kyoto Prefectural University of Medicine, Graduate School of Medical Science, 465 Kajii-cho, 602-0841, Kamigyo-ku, Kyoto, Japan;

关键词: Self-report;    Questionnaire survey;    Number of teeth;    Validity;   

DOI  :  10.1186/s12903-016-0248-2

 received in 2015-11-13, accepted in 2016-07-12,  发布年份 2016

来源: Springer

【 摘 要 】

BackgroundOral condition and number of teeth were investigated by questionnaire in the Japan Multi-Institutional Collaborative Cohort (J-MICC Study). The aim of the present study was to assess the validity of the tooth number measure by comparing the self-reported number of teeth with the number of teeth determined at clinical dental examination.MethodsA self-administered questionnaire and dental examination were performed by 1275 participants of a company medical examination who requested dental check-up and 377 subjects of the J-MICC study. The validity of the tooth number measure was assessed by comparing the self-reported number of teeth with that determined at clinical examination. Spearman’s rank correlation coefficient was calculated to quantitatively evaluate the validity.ResultsIn males, the mean clinically-examined and self-reported numbers of teeth were 26.5 and 24.8 teeth, respectively. In females, the mean clinically-examined and self-reported numbers of teeth were 26.4 and 25.5 teeth, respectively. There was a tendency toward underestimation of the number of natural teeth by self-reporting. A significant correlation was observed between the clinically-examined and self-reported numbers of teeth in total (ρ = 0.69) and both males (ρ = 0.70) and females (ρ = 0.67).ConclusionsThe self-reported oral health variables were valid and reflected clinical status. Further revision of the question on the remaining tooth in the questionnaire improves the validity of self-reported number of teeth.

【 授权许可】

CC BY   
© The Author(s). 2016