Dimensional Structure and Preliminary Results of the External Constructs of the Schizophrenia Coping Oral Health Profile and Index (SCOOHPI).

The Schizophrenia Coping Oral Health Profile and Index (SCOOHPI) was developed to assess oral health coping strategies in people with schizophrenia. We show that the difficulty and discrimination indices of 18 items, selected for the final version, are acceptable according to the Rasch model, as are the inter-item (0.25) and inter-score (α = 0.85) correlations. This scale can be considered as an index, giving a global score between 0 and 72, with a Likert scale with five response modalities. This is also a profile with the following three dimensions of coping-related oral health, emerging independently of each other: (1) physical well-being strategies (α = 0.72); (2) moral well-being strategies (α = 0.60); (3) access strategies for oral well-being (α = 0.79). The sub-scores, ranging from 0 to 24, specify populations focused on the themes of coping strategies that may be most affected, depending on the subject's characteristics and their clinical oral health status. The validation study of this scale is still in progress, to evaluate the reproducibility of the results, sensitivity to change, and reliability for other populations of people with schizophrenia.

Psychometric Properties of the Schizophrenia Oral Health Profile: Preliminary Results.

The Schizophrenia Oral Health Profile questionnaire was developed to assess the oral health-related quality of life among individuals with schizophrenia based on their perceptions rather than from caregivers. A 5-point Likert scale was used to self-report on 42 items. In the present study, different analyses were conducted to determine the dimensional structure of the final scale: (1) inter-item correlation analysis and Cronbach's α coefficient, (2) Rasch model analysis, (3) exploratory factor analysis and (4) confirmatory factor analysis. The final version of the Schizophrenia Oral Health Profile questionnaire consisted of 20 items and an internal structure composed of three dimensions: (1) emotions related to oral health, (2) oral pain and discomfort and (3) self-image, others' views and the need for care. We showed that the difficulty and discrimination indices of each of the 20 selected items were acceptable according to the Rasch model, as well as their inter-item and inter-score correlations (α = 0.875). The psychometric study of the Schizophrenia Oral Health Profile questionnaire is still in progress to investigate reproducibility, sensitivity to change and external structure.