The Oral Health Impact Profile-14: A unidimensional scale?

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The aim of this study was to investigate the dimensional structure of the Oral Health Impact Profile-14 (OHIP-14). Data was obtained from studies carried out in Rio de Janeiro (N = 504) and Carlos Barbosa (N = 872), in the State of Rio Grande do Sul, Brazil. Exploratory factor analysis (EFA) was performed to identify the latent dimensions of the OHIP-14. Confirmatory factor analysis (CFA) was carried out of both samples to compare the one-dimensional structure found by the EFA and the proposed three-dimensional structure. This factorial structure was assessed using goodness-of-fit indices. In the Rio de Janeiro study, the eigenvalue was 9.2 and this one factor explained 65.6% of total variance, while in the Carlos Barbosa study the eigenvalue was 7.9 and this one factor explained 56.6% of variance. CFA indicated an adequate fit of the one-factor model for the Rio de Janeiro study (RMSEA = 0.04; CFI = 0.98; TLI = 0.98) and for the Carlos Barbosa study (RMSEA = 0.05; CFI = 0.97; TLI = 0.97). Our findings suggest that the OHIP-14 measures one single construct.




dos Santos, C. M., de Oliveira, B. H., Nadanovsky, P., Hilgert, J. B., Celeste, R. K., & Hugo, F. N. (2013). The Oral Health Impact Profile-14: A unidimensional scale? Cadernos de Saude Publica, 29(4), 749–757.

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