Designing and validating a questionnaire on oral health care knowledge, attitude, and practice of dental staff

Toutouni, Hediyeh; Banihashem Rad, Seyed Ahmad; Boroumand, Farzaneh; Hosseini Pouya, Fatemeh (2021). Designing and validating a questionnaire on oral health care knowledge, attitude, and practice of dental staff. Journal of contemporary medical sciences, 7(5), pp. 276-281. Nab'a Al-Hayat Foundation for Medical Sciences and Health Care 10.22317/jcms.v7i5.1071

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Objectives: This study aimed to design a valid questionnaire to evaluate knowledge, attitude, and practice (KAP) of Mashhad Dental school staff about oral health care and to assess the validity and reliability of this instrument.
Methods: The “Dental Staff Awareness of Oral Health Care” (DSAOHC) was divided into three concepts; knowledge, attitude and practice. Ten experts of Mashhad Dental School contributed to design the questionnaire and assessed the face and content validity (I-CVI and S-CVI/AV) in two rounds. The necessity of each item was evaluated according to Lawshe’s Content Validity Ratio (CVR). Construct validity, internal consistency, and reliability were assessed using confirmatory factor analysis, homogeneity coefficients, and test-retest by distributing the instrument among 207 dental staff working in other dental schools and private clinics.
Results: Based on the acceptable results of I-CVI, S-CVI/AV (>0.7), and CVR (>0.62), the final version of DSAOHC was approved with 34 questions, including 10 questions about background information, 8 questions for the knowledge, 5 questions for attitude and 11 questions related to practice. Cronbach’s alpha coefficients were acceptable for all domains. The RMSEA criterion was ≤ 0.05 and its upper band confidence interval (CI 90%) was ≤ 0.1. Also, CFI indicated the suitability of the model (the desired value of CFI>0.9). Inter-Class Correlation/ICC revealed the appropriate measure (ICC = 0.998).
Conclusion: The measures showed that this instrument is valid and reliable, also culturally adjusted to and acceptable for this community. It may adequately evaluate staffs’ knowledge, attitude, and practice toward oral health.

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