Browsing by Author "Presoto, Cristina Dupim"
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- Dental anxiety: Prevalence and evaluation of psychometric properties of a scalePublication . Campos, Juliana Alvares Duarte Bonini; Presoto, Cristina Dupim; Martins, Carolina Scanavez; Domingos, Patrícia Aleixo dos Santos; Maroco, JoãoAim: 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 (IC95% = 40.9 - 54.4) presented low levels of anxiety, 32.5% (IC95% = 26.2 - 38.9) moderate levels, and 12.3% (IC95% = 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.
- Work-related activities that may contribute to musculoskeletal symptoms among dental students: Validation studyPublication . Garcia, Patrícia Petromilli Nordi Sasso; Presoto, Cristina Dupim; Maroco, João; Campos, Juliana Alvares Duarte BoniniBackground: Dentists are exposed to occupational hazards, such as musculoskeletal disorders, in which symptoms can manifest early in clinical practice. Objectives: To estimate the reliability and validity of the Portuguese version of the “Questionnaire on work-related activities that may contribute to musculoskeletal symptoms” when applied to dental students. Methods: 553 Brazilian students participated in the study. The one-factor structure originally proposed was tested through confirmatory factor analysis (CFA) using the indexes c2/df, CFI, GFI, and RMSEA. After observing an inadequate good fit (c2/df=7.140, CFI=0.791, GFI=0.778, RMSEA=0.129), the sample was subdivided into 3 groups and an exploratory factor analysis was conducted (EFA) (n=255). A CFA was then conducted using a subsample (n=113). To test the invariance of the obtained factorial solution, a multi-group analysis was performed using a third sample, independent from the others (n=185). The convergent (AVE) and discriminant (r2) validity were assessed. The composite reliability (CR), Cronbach’s alpha coefficient (a), and intra-class correlation coefficient (r) were calculated. Results: In the EFA, 3 factors were extracted: “Repetitiveness,” “Working posture,” and “External factors” (c2=21895.154; p<0.001; KMO=0.905; l1=6.683; l2=1.464; l3=1.277) that explained 62.82% of the total variance. The three-factor model presented an adequate good fit (n=113 and n=185) (c2/df=2.259; CFI=0.885; GFI=0.833; RMSEA=0.066). The convergent validity was compromised only for “Repetitiveness” (AVE=0.412- 0.653). The discriminant validity (r2=0.333-0.428), composite reliability, internal consistency, and reproducibility were adequate for all factors (CR=0.736–0.883; a=0.747–0.876; r=0.729-0.940). Conclusion: The questionnaire proved to be reliable and valid for the sample of dentistry students if the three-factor model is used.