Adaptação cultural e validação para a língua portuguesa do Family Questionnaire (FQ) para avaliação do ambiente familiar de pacientes com esquizofrenia / Cultural Adaptation and validation for Portuguese of Family Questionnaire to evaluate the family environment of schizophrenic patients

AUTOR(ES)
DATA DE PUBLICAÇÃO

2010

RESUMO

The main studies about family environment of schizophrenic patients are those related to the concept of Expressed Emotion (EE), based on the quality of social interaction among family members. Few studies have investigated the family environment of schizophrenic patients in Brazil. There isnt an easy instrument to apply to evaluate this concept. This methodological study aimed to adapt and validate the Family Questionnaire (FQ) for the Portuguese language. The FQ contains 20 items distributed in two domains; 10 items for critical comments (CC) and 10 items for emotional overinvolvement (EOI). The items responses are obtained from a 4 point scale with extreme values varying from one (1) - very rarely - to four (4) - always. The possible interval for the total measure varies from 10 to 40, in which the higher values for both areas reflect higher EE. The process of cultural adaptation followed the steps recommended in the literature: translation of the FQ for Portuguese; obtaining consensus of the Portuguese versions; evaluation by expert committee, back-translation; obtaining consensus of versions in German and compared with the original version in German; semantic evaluation of the items and pre-test. Study participants were 100 relatives of schizophrenic patients. Data were collected through interviews in four secondary mental health services at São Paulo state during the period from January to March 2010. The validation of the FQ construct was evaluated through Pearson correlation tests between the measures of the instrument domain and a correlate construct (sense of coherence), principal component analysis and testing to compare different groups. Reliability was evaluated by internal consistency of its items (Cronbachs alpha) and reproducibility by test-retest. The level of significance adopted was of 0.05. The results showed that the majority of the participants were female (78%), average age of 52.6 years old, basic level of school (52%), married (57%), mothers (41%) and average time living with the patient of 26.7 years. Among the patients, 66% were male, average age of 40.5 years old, incomplete basic education (60%) and average time of illness of 15.8 years. Hypothesis tests confirmed the convergent construct validity between the measures of sense of coherence and the domainsof FQ, and, in part, the difference in measurements of FQ domainsand the characteristics of the families. The analysis of main components confirmed the same dimensionality from the original version in the version adapted for Portuguese. Regarding the reliability, we obtained an adequate Cronbachs alpha value for the fields CC (0.861) and EOI (0.655) of the FQ adapted version. Reproducibility evaluated by test-retest with 30 participants indicated strong correlations between items of the CC domains (r = 0.689, p <0.001) and EOI (r = 0.769, p <0.001) of the FQ. Therefore, we conclude the FQ Portuguese adapted version is valid and reliable for the sample studied.

ASSUNTO(S)

validity studies family estudos de validação schizophrenia família esquizofrenia

ACESSO AO ARTIGO

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