Cronbach alfa coeficient use for validation of questionnaires in dental research

Authors

  • Rafael Gustavo Dal Moro
  • Melissa Rosa Braga
  • Dalva Maria Pereira Padilha

DOI:

https://doi.org/10.22456/2177-0018.103386

Keywords:

Data Collection, Reproducibility of Results

Abstract

Questionnaires are instruments very used frequently in dental research. The validity of data collection instruments is necessary for results analysis. Internal consistency evaluation is a step for validation. Cronbach alfa coeficient was developed for that calculation. The aim of this study is to demonstrate the calculation of the coeficient of internal consistency proposed by Cronbach. A questionnaire answered by 51 elderly people about oral hygiene knowledge was used. Once the alfa coeficient found was 0,72, the instrument had good internal consistency. Data confiability is a result of the quality of data collection instruments, so it is important to validate this instrument also by internal consistency evaluation.

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Published

2003-06-01

How to Cite

Dal Moro, R. G., Rosa Braga, M., & Pereira Padilha, D. M. (2003). Cronbach alfa coeficient use for validation of questionnaires in dental research. Revista Da Faculdade De Odontologia De Porto Alegre, 44(2), 34–36. https://doi.org/10.22456/2177-0018.103386

Issue

Vol. 44 No. 2 (2003)

Section

Original articles

License

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