Designing and validating a questionnaire on oral health care knowledge, attitude, and practice of dental staff
Keywords:Oral health, knowledge, Attitude, Practice, Questionnaire
Objective: 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 Careâ€ (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 Lawsheâ€™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 â‰¤ 0.05 and its upper band confidence interval (CI 90%) was â‰¤ 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 staffsâ€™ knowledge, attitude, and practice toward oral health.
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