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

Yuan, Siyang; Freeman, Ruth; Lahti, Satu; Lloyd-Williams, Ffion; Humphris, Gerry

doi:10.1186/1477-7525-6-22

Cited by 87 publications

(131 citation statements)

References 43 publications

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“…The originally proposed theoretical model of the DAS 14 ( Figure 1) and the two-factor model proposed by Yuan et al 18 ( Figure 2) were found to fit adequately to this Brazilian sample, indicating that this scale can be used to investigate dental anxiety. The decision on which model to use should be based on the objective of the investigation: if the focus is anxiety over dental treatment in general, the Model B is recommended.…”

Section: Discussionmentioning

confidence: 89%

“…27,30 Next, the above analyses were performed on specific participant subgroups, based on gender, age, socioeconomic level, and previous unpleasant dental experiences, which are supported by the literature as having a significant impact on dental anxiety. The literature reports that women, 16,17,19 younger patients, 17 patients at lower socioeconomic levels, 5,19 and with previous unpleasant dental experiences 18 present greater anxiety over dental treatment. These findings may reflect a pattern of response that is distinct to the items of the DAS.…”

Section: Statistical Analysesmentioning

confidence: 99%

“…In the original scale 14 the four scores are added, with higher scores indicating higher levels of anxiety. Although the original DAS is based on a one-factor model, a two-factor model (F1: anticipatory dental anxiety and F2: treatment dental anxiety) was presented by Yuan et al 18 in a sample of Chinese adults and, in the current study, the two models were evaluated.…”

Section: Dental Anxiety Scalementioning

confidence: 99%

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Validation and Invariance of the Dental Anxiety Scale in a Brazilian sample

Bonafé

Campos

2016

Braz. oral res.

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The aim of this study was to evaluate the properties of the Dental Anxiety Scale (DAS) when applied to Brazilian adults and to test its invariance across independent samples and different sociodemographic groups. Sociodemographic data, reports on previous unpleasant dental experiences and DAS responses were collected through telephone interviews. Metric properties of the one and two-factor models were evaluated using confirmatory factor analysis. The analysis included the chi-square ratio divided by degrees of freedom (χ 2 /df), the comparative fit index (CFI), the goodness of fit index (GFI) and the root mean square error of approximation (RMSEA). Convergent validity was evaluated using the average variance extracted (AVE). Cronbach's alpha (α) and composite reliability (CR) were calculated. In the two-factor model, discriminant validity was evaluated. The invariance of the models was evaluated using a multigroup analysis of the independent samples (pΔχ 2 λ, pΔχ 2 i and pΔχ 2 Res ≥ 0.05). Telephone interviews were held with 350 individuals (74.3% women). Of the participants, 135 (38.6%) had previous unpleasant dental experiences, and 117 (33.4%) knew someone who had had this type of experience. The oneand two-factor model (χ 2 /df < 2.0; CFI,GFI > 0.90; RMSEA < 0.10; AVE > 0.50; α,CR > 0.70) were adjusted to the data. Discriminant validity was limited (ρ 2 = 0.66). Both models presented strong invariance across independent samples, but the invariance was weak (pΔχ 2 i < 0.05) when samples were defined by socioeconomic variables. In conclusion, both DAS models were valid and reliable when applied to a sample of Brazilian adults. However, the weak invariance of the models suggests that sample characteristics interfered with the measurement of dental anxiety.

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Section: Discussionmentioning

confidence: 89%

Section: Statistical Analysesmentioning

confidence: 99%

Section: Dental Anxiety Scalementioning

confidence: 99%

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Validation and Invariance of the Dental Anxiety Scale in a Brazilian sample

Bonafé

Campos

2016

Braz. oral res.

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“…Regarding the 5-item modified DAS, the construct validity and reliability were asserted in detail (Yuan, Freeman, Lahti, Lloyd-Williams, & Humphris, 2008), however, this process was only carried out for the Chinese version of the instrument. Moreover, the internal consistency, reproducibility and the concurrent validity of the scale were also evaluated (Moore, Berggren, & Carlsson, 1991) in a Danish sample with 155 subjects, who presented an exaggerated fear of dentists.…”

Section: Introductionmentioning

confidence: 99%

Dental Anxiety: Prevalence and Evaluation of Psychometric Properties of a Scale

Campos¹,

Presoto²,

Martins³

et al. 2013

PCH

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Aim: To estimate the reliability and validity of the Dental Anxiety Scale (DAS) and identify the prevalence and the effect of the socio-demographic characteristics of dental anxiety, in a sample of 212 adults. Methods: The psychometric sensitivity of the scale was assessed. A confirmatory factor analysis was performed, and the convergent validity and internal consistency were determined. The prevalence of anxiety was estimated, and the effect of socio-demographic variables on anxiety was assessed using structural equation modelling. Results: The participants' mean age was 33.5 (SD = 15.6) years, and 62.3% were female. There was an adequate factorial adjustment of the scale in this sample. The convergent validity and internal consistency were adequate in the one-factor model. Regarding two-factor model, there was a high correlation (r) among the factors, which jeopardized the discriminant validity. A total of 47.6% of the participants (IC 95% = 40.9 -54.4) presented low levels of anxiety, 32.5% (IC 95% = 26.2 -38.9) moderate levels, and 12.3% (IC 95% = 7.8 -16.7) exacerbated levels. There was a non-significant effect of gender, age and education on the anxiety levels of this sample. Conclusion: We concluded that the one-factor model presented better psychometric qualities, that anxiety was highly prevalent and there was no significant effect of the demographic variables on anxiety, in this sample.

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“…There are several patient report anxiety scales available 2 and we selected the Modified Dental Anxiety Scale (MDAS) because of its relevance, validity and brevity. 3 The MDAS has been translated into a number of world languages, many of which have published psychometrics (Chinese, 4 Greek, 5 Spanish, 6…”

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confidence: 99%