Browsing by Author "Schmidt, Silke"
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- Evidence of validity of internal structure of the Functional Assessment of Chronic Illness Therapy-Spiritual Well-Being Scale (FACIT-Sp-12) in Brazilian adolescents with chronic health conditionsPublication . Alvarenga, Willyane de Andrade; Nascimento, Lucila Castanheira; Rebustini, Flávio; Santos, Claudia Benedita dos; Muehlan, Holger; Schmidt, Silke; Bullinger, Monika; Liberato, Fernanda Mayrink Gonçalves; Vieira, MargaridaThis study explored the evidence of validity of internal structure of the 12-item Functional Assessment of Chronic Illness Therapy—Spiritual Wellbeing Scale (FACIT-Sp-12) in Brazilian adolescents with chronic health conditions. The study involved 301 Brazilian adolescents with cancer, type 1 diabetes mellitus, or cystic fibrosis. Exploratory Factor Analysis (EFA), Confirmatory Factor Analysis (CFA), and Item Response Theory (IRT) were used to test the internal structure. Reliability was determined with Cronbach’s Alpha and McDonald’s Omega. The EFA suggested a one-dimensional scale structure in contrast to the original 2-factor model or the 3-factor model which were not reproduced in the current CFA. All quality indicators for the EFA one-factor exceeded the required criteria (FDI = 0.97, EAP = 0.97, SR = 3.96 and EPTD = 0.96, latent GH = 0.90. and the observed GH = 0.85). The FACIT-Sp-12 for adolescents yielded strong evidence for a 1-factor model and with good reliability.
- Measuring spiritual well‑being in Brazilian adolescents with chronic illness using the FACIT‑Sp‑12: age adaptation of the self‑report version, development of the parental‑report version, and validationPublication . Alvarenga, Willyane Andrade de; Nascimento, Lucila Castanheira; Santos, Claudia Benedita dos; Leite, Ana Carolina Andrade Biaggi; Mühlan, Holger; Schmidt, Silke; Bullinger, Monika; Carvalho, Emília Campos de; Bredle, Jason; Arnold, Benjamin; Coelho, Robson de Castro; Vieira, MargaridaSpiritual well-being is a major issue in health care, but instruments for measuring this construct in adolescents are lacking. This study adapted the 12-item Functional Assessment of Chronic Illness Therapy-Spiritual Well-being Scale (FACIT-Sp-12) for use with Brazilian adolescents with chronic diseases and developed a parental observer-rated version, using an expert panel, back-translation, and cognitive interviews with 72 participants. The psychometric properties of both versions were verified with two- and three-factor models by testing with 212 participants. The self- and parental-reported versions showed face validity, content validity, and acceptable levels of internal consistency for the overall scale and the two-factor model. The convergent validity was satisfactory for most items in both two- and three-factor models, but there was a lack of discrimination in the three-factor model using multitrait–multimethod analysis. This study presents the first instrument to assess the spiritual well-being of adolescents from their point of view and to allow their parents to serve as evaluators. However, we recommend further psychometric testing of the self- and parental-report scales to assess spiritual well-being in adolescents with chronic diseases in Brazil.