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| Author(s): |
Marwin Machay Indio do Brasil do Carmo
Total Authors: 1
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| Document type: | Master's Dissertation |
| Press: | São Paulo. |
| Institution: | Universidade de São Paulo (USP). Faculdade de Medicina (FM/SBD) |
| Defense date: | 2023-08-30 |
| Examining board members: |
Renatha El Rafihi Ferreira;
Ila Marques Porto Linares;
Daniel Graca Fatori de Sa;
Altay Alves Lino de Souza
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| Advisor: | Renatha El Rafihi Ferreira |
| Abstract | |
Insomnia is a common problem that affects a significant portion of the population. Dysfunctional beliefs and attitudes about sleep contribute to developing and maintaining insomnia. This study developed a Brazilian-Portuguese version of the dysfunctional beliefs and attitudes about sleep scale (DBAS-16) and conducted a comprehensive psychometric evaluation using latent variable and psychometric network frameworks. Participants (N=1,386) were between 18 and 59 years old, with and without insomnia complaints. Using Confirmatory Factor Analysis (CFA) with dynamic fit indices, the original DBAS-16 structure was replicated in this sample with moderate fit quality. There was also support for configural, metric, and scalar longitudinal invariance (14 days) but not for metric invariance across groups of good and bad sleepers. Unique Variable Analysis applied to half of the sample data (n = 693) identified three redundant items suitable for exclusion (1. Need 8 hours of sleep, 3. Consequences of insomnia on health, and 15. Medication as a solution). Additionally, Exploratory Graph Analysis (EGA) identified two dimensions with excellent structural stability, replicated when EGA was applied to the other half of the sample. Using CFA, it was found that the EGA model fit significantly better than the proposed theoretical model, endorsing an alternative DBAS dimensionality. These findings support the use of the DBAS-16 with a Brazilian-Portuguese-speaking population. Further, after excluding locally dependent variables, two dimensions better represent dysfunctional beliefs and attitudes about sleep (AU) | |
| FAPESP's process: | 21/05573-5 - Cross cultural adaptation and validation of the scales dysfunctional beliefs and attitudes about sleep and sleep problem acceptance questionnaire |
| Grantee: | Marwin Machay Indio do Brasil do Carmo |
| Support Opportunities: | Scholarships in Brazil - Master |