Adaptação e evidências psicométricas da versão brasileira da Cambridge Worry Scale

The Cambridge Worry Scale is a multidimensional scale created to evaluate the type and intensity of pregnant worry with good rates of validation and trustworthiness. This research’s main objective was to adapt and analyze the psychometric evidences of the Cambridge Worry Scale, which evaluates ma...

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Bibliographic Details
Main Author: Oliveira, Maria Aurelina Machado de
Other Authors: Maia, Eulalia Maria Chaves
Format: doctoralThesis
Language:por
Published: Brasil
Subjects:
Online Access:https://repositorio.ufrn.br/jspui/handle/123456789/21777
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Summary:The Cambridge Worry Scale is a multidimensional scale created to evaluate the type and intensity of pregnant worry with good rates of validation and trustworthiness. This research’s main objective was to adapt and analyze the psychometric evidences of the Cambridge Worry Scale, which evaluates maternal worries on pregnant women. The specific goals were: a) adapt the semantic items in the Cambridge Worry Scale from English to Brazilian Portuguese b) evaluate content validation evidences through the content validation coefficient (stage 1); c) verify validation and trustworthiness elements of the Cambridge Worry Scale through psychometric evaluation procedures (stage 2). Transcultural adaptation of transversal cut done with 420 pregnant women from the age of 13 assisted in Basic Health Units in Natal (RN). It was used as instruments: 1) Structured quiz (socio-demographic and pregnancy data); 2) Cambridge Worry Scale (CWS); 3) Psychosocial profile in pre-birth (PPP); and the social support scale. The project fulfilled the ethnic aspects having a favorable juridical decision (572.558/ 2014) from the UFRN’s Ethics and Research Committee. The data analysis were done with the help from the SPSS (21.0) Software. On stage 1 descriptive statistics were done (frequency and validation coefficient of the content - CVC) and Kappa’s Fleiss calculus. On stage 2 we used the exploratory and confirmatory factorial analysis, t test, ANOVA, Pearson Correlation; and Cronbach’s alpha calculus. On stage 1 we had the formal authorization from the authors; preparation and consolidation of the preliminary version; and content validation about the Clarity criteria, Practical Pertinence and Theoretical Relevance, which CVCs were higher than 0.8 in most of the items. The Theoretical Dimension presented a substantial conformity (k=0.7164). Stage 2 refers to the collection of data from 420 pregnant women. The average age was 26.85 (±8,93) years old, most of them presented low education and income level, they were house wives, catholic, and married. Women with multiple kids predominated, low abortion rate history and there weren’t a pregnancy planning. The exploratory factorial analysis with Oblimin rotation, followed by the confirmatory factorial analysis for the 16 items and 13 items (reduced), pointed good validity indicators and trustworthiness for both models. There were differences in the factorial structure of both models. The 16 items presented 5 factors, most of them organized according to the original. The reduced version showed itself similar to the original model, and that’s why its usage is indicated. The scale presented convergent validation, divergent and confirmed construct by the correlation between CWS factors and stress scores (convergent), self-esteem and social support (divergent). The criteria validation was observed through the difference of the total score and factors of the CWS amongst pregnant groups (first pregnancy/multi pregnancy; teenagers and adults young/late). The evaluated trustworthiness through the internal consistency of the scale was good (valor α=0.825) as so did the factors (α=0.64-0.74). The psychometric results regarding the validity and trustworthiness of the Brazilian version of the CWS points out that the scale is appropriate to use. It’s a useful and easy to apply instrument that can be used by researchers and clinics to evaluate pregnant worries.