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Some psychometric properties of the Chinese version of the Modified Dental Anxiety Scale with cross validation.

Yuan S, Freeman R, Lahti S, Lloyd-Williams F, Humphris G - Health Qual Life Outcomes (2008)

Bottom Line: Cross validation was tested with a North West of England comparison sample. 783 questionnaires were successfully completed from Beijing, 468 from England.Significant structural parameters between the two sub-scales (negative affectivity and autonomic anxiety) of the HADS anxiety items and the two newly identified factors of the MDAS were confirmed and duplicated in the comparison sample.The Chinese version of the MDAS has good psychometric properties and has the ability to assess, briefly, overall dental anxiety and two correlated but distinct aspects.

View Article: PubMed Central - HTML - PubMed

Affiliation: Dental Health Research Unit, Mackenzie Building, Ninewells Hospital, University of Dundee, UK. s.yuan@chs.dundee.ac.uk

ABSTRACT

Objective: To assess the factorial structure and construct validity for the Chinese version of the Modified Dental Anxiety Scale (MDAS).

Materials and methods: A cross-sectional survey was conducted in March 2006 from adults in the Beijing area. The questionnaire consisted of sections to assess for participants' demographic profile and dental attendance patterns, the Chinese MDAS and the anxiety items from the Hospital Anxiety and Depression Scale (HADS). The analysis was conducted in two stages using confirmatory factor analysis and structural equation modelling. Cross validation was tested with a North West of England comparison sample.

Results: 783 questionnaires were successfully completed from Beijing, 468 from England. The Chinese MDAS consisted of two factors: anticipatory dental anxiety (ADA) and treatment dental anxiety (TDA). Internal consistency coefficients (tau non-equivalent) were 0.74 and 0.86 respectively. Measurement properties were virtually identical for male and female respondents. Relationships of the Chinese MDAS with gender, age and dental attendance supported predictions. Significant structural parameters between the two sub-scales (negative affectivity and autonomic anxiety) of the HADS anxiety items and the two newly identified factors of the MDAS were confirmed and duplicated in the comparison sample.

Conclusion: The Chinese version of the MDAS has good psychometric properties and has the ability to assess, briefly, overall dental anxiety and two correlated but distinct aspects.

Show MeSH
Structural model of the relation between negative affectivity, autonomic anxiety and the two factor version of the MDAS including standardised coefficients: Beijing and North-west England (italics). Wider arrows denote greater strength of relationship. Error terms omitted to simplify diagram.
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Figure 2: Structural model of the relation between negative affectivity, autonomic anxiety and the two factor version of the MDAS including standardised coefficients: Beijing and North-west England (italics). Wider arrows denote greater strength of relationship. Error terms omitted to simplify diagram.

Mentions: The hypothesised structural model was evaluated with the Chinese data as specified in Figure 2. Standardised parameter estimates are shown. The correlation matrix is presented in Table 2. Of particular interest was the strength of the relationships between the anxiety latent factors (Negative Affectivity NA and Autonomic Anxiety AA) with the 2 dental anxiety latent factors (ADA and TDA). The results of the model fitting are summarised in Table 4.


Some psychometric properties of the Chinese version of the Modified Dental Anxiety Scale with cross validation.

Yuan S, Freeman R, Lahti S, Lloyd-Williams F, Humphris G - Health Qual Life Outcomes (2008)

Structural model of the relation between negative affectivity, autonomic anxiety and the two factor version of the MDAS including standardised coefficients: Beijing and North-west England (italics). Wider arrows denote greater strength of relationship. Error terms omitted to simplify diagram.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC2289811&req=5

Figure 2: Structural model of the relation between negative affectivity, autonomic anxiety and the two factor version of the MDAS including standardised coefficients: Beijing and North-west England (italics). Wider arrows denote greater strength of relationship. Error terms omitted to simplify diagram.
Mentions: The hypothesised structural model was evaluated with the Chinese data as specified in Figure 2. Standardised parameter estimates are shown. The correlation matrix is presented in Table 2. Of particular interest was the strength of the relationships between the anxiety latent factors (Negative Affectivity NA and Autonomic Anxiety AA) with the 2 dental anxiety latent factors (ADA and TDA). The results of the model fitting are summarised in Table 4.

Bottom Line: Cross validation was tested with a North West of England comparison sample. 783 questionnaires were successfully completed from Beijing, 468 from England.Significant structural parameters between the two sub-scales (negative affectivity and autonomic anxiety) of the HADS anxiety items and the two newly identified factors of the MDAS were confirmed and duplicated in the comparison sample.The Chinese version of the MDAS has good psychometric properties and has the ability to assess, briefly, overall dental anxiety and two correlated but distinct aspects.

View Article: PubMed Central - HTML - PubMed

Affiliation: Dental Health Research Unit, Mackenzie Building, Ninewells Hospital, University of Dundee, UK. s.yuan@chs.dundee.ac.uk

ABSTRACT

Objective: To assess the factorial structure and construct validity for the Chinese version of the Modified Dental Anxiety Scale (MDAS).

Materials and methods: A cross-sectional survey was conducted in March 2006 from adults in the Beijing area. The questionnaire consisted of sections to assess for participants' demographic profile and dental attendance patterns, the Chinese MDAS and the anxiety items from the Hospital Anxiety and Depression Scale (HADS). The analysis was conducted in two stages using confirmatory factor analysis and structural equation modelling. Cross validation was tested with a North West of England comparison sample.

Results: 783 questionnaires were successfully completed from Beijing, 468 from England. The Chinese MDAS consisted of two factors: anticipatory dental anxiety (ADA) and treatment dental anxiety (TDA). Internal consistency coefficients (tau non-equivalent) were 0.74 and 0.86 respectively. Measurement properties were virtually identical for male and female respondents. Relationships of the Chinese MDAS with gender, age and dental attendance supported predictions. Significant structural parameters between the two sub-scales (negative affectivity and autonomic anxiety) of the HADS anxiety items and the two newly identified factors of the MDAS were confirmed and duplicated in the comparison sample.

Conclusion: The Chinese version of the MDAS has good psychometric properties and has the ability to assess, briefly, overall dental anxiety and two correlated but distinct aspects.

Show MeSH