title: Confirmatory factor analysis of the Child Oral Health Impact Profile (Korean version).
abstract: Empirical support for the factor structure of the Child Oral Health Impact Profile (COHIP) has not been fully established. The purposes of this study were to evaluate the factor structure of the Korean version of the COHIP (COHIP-K) empirically using confirmatory factor analysis (CFA) based on the theoretical framework and then to assess whether any of the factors in the structure could be grouped into a simpler single second-order factor. Data were collected through self-reported COHIP-K responses from a representative community sample of 2,236 Korean children, 8-15 yr of age. Because a large inter-factor correlation of 0.92 was estimated in the original five-factor structure, the two strongly correlated factors were combined into one factor, resulting in a four-factor structure. The revised four-factor model showed a reasonable fit with appropriate inter-factor correlations. Additionally, the second-order model with four sub-factors was reasonable with sufficient fit and showed equal fit to the revised four-factor model. A cross-validation procedure confirmed the appropriateness of the findings. Our analysis empirically supported a four-factor structure of COHIP-K, a summarized second-order model, and the use of an integrated summary COHIP score.
authors: Department of Psychology, Sungshin Women's University, Seoul, Korea.
authors: Young Il
authors: YI
authors: Cho
authors: Department of Psychology, Sungkyunkwan University, Seoul, Korea.
authors: Soonmook
authors: S
authors: Lee
authors: Department of Dental Ecology, School of Dentistry, University of North Carolina, Chapel Hill, NC, USA.
authors: Lauren L
authors: LL
authors: Patton
authors: Department of Psychology, Sungshin Women's University, Seoul, Korea.|Department of Health Policy and Management, College of Health Science & Department of Public Health Sciences, Graduate School, Korea University, Seoul, Korea.
authors: Hae-Young
authors: HY
authors: Kim
mesh_terms: D000293:Adolescent; D002648:Child; D005163:Factor Analysis, Statistical; D006801:Humans; D009909:Oral Health; D011788:Quality of Life; D015203:Reproducibility of Results; D011795:Surveys and Questionnaires
keywords: Child Oral Health Impact Profile; confirmatory factor analysis; oral health-related quality of life; structural validity