Objective: The goal of the study is to adapt and examine the psychometric properties of the Brazilian version of the nine-item Problematic Internet Use Questionnaire (PIUQ-SF-9).Methods: A convenience sample of Brazilian internet users aged between 18 and 89 years (72.7% female, mean age 38.7 years ± 13.5) was recruited online from September 2018 to July 2019 (test sample = 1,525; retest sample = 237). Participants responded to the adapted version of the PIUQ-SF-9, as well as the Center for Epidemiologic Studies-Depression Scale (CES-D-10) and sociodemographic questions.Results: A bifactor model with one general factor and three specific dimensions (obsession, neglect and control disorder) yielded the best fit indices [χ2 = 67.66, df = 15, CFI = 0.99, TLI = 0.99, RMSEA = 0.048 (0.037–0.060), RMSEA p close = 0.587 and SRMR = 0.01]. McDonald's hierarchical omega coefficient was 0.76 for the general factor and varied between 0.16 and 0.33 for the specific dimensions. The intraclass correlation coefficient was 0.73 for the general factor and varied between 0.64 and 0.72 for the specific dimensions. The MIMIC model supported the scale's construct validity as the relationship of the predictors (age, time spent online, self-perception of problematic internet use, and depression symptoms) with the PIUQ-SF-9 factors was in line with the assumptions based on the literature.Conclusion: PIUQ-SF-9 seems to be a brief and culturally validated instrument with sound psychometric properties to be used in future studies on problematic internet use in the Brazilian population.

RESUMOObjetivo: O objetivo do estudo foi analisar as características sintomatológicas e sociodemográficas associadas ao histórico de tentativa de suicídio (TS) de usuários de cocaína e crack internados para tratamento. Métodos: Trata-se de um estudo transversal envolvendo 160 participantes que responderam a uma entrevista clínica semiestruturada e ao instrumento Adult Self-Report (ASR). O modelo de Regressão Logística foi utilizado para testar os sintomas psicológicos associados à TS dessa amostra. Resultados: As diferenças entre o grupo com TS e sem TS foram significativas (p < 0,001), e, do total da amostra, 30,6% (n = 49; p = 0,428) possuíam histórico de TS e 30,5% (n = 20) relataram ideação suicida no atual tratamento. A etnia, os sintomas de depressão e os problemas de pensamento estiveram associados à TS, enquanto comportamentos intrusivos, de quebra de regras e problemas internalizantes serviram de proteção à TS. Conclusões: Os achados reforçam a necessidade da avaliação psiquiátrica dos estados emocionais, de comorbidades e do risco de suicídio no ingresso e durante o tratamento para dependência química. ABSTRACTObjective: The objective of this study was to analyze the symptoms and sociodemographic characteristics associated with the history of attempted suicide (TS) of cocaine and crack users hospitalized for treatment. Methods: This is a cross-sectional study involving 160 participants who completed a semi-structured clinical interview and the Adult Self-Report (ASR) instrument. The Logistic Regression model was used to test the psychological symptoms associated with TS of this sample. Results: The differences between the TS and non-TS groups were significant (p < 0.001). Of the total sample, 30.6% (n = 49; p = 0.428) had a history of TS and 30.5% (N = 20) reported suicidal ideation in the current treatment. Ethnicity, symptoms of depression and problems of thinking were associated with TS, whereas intrusive, rule-breaking and internalizing problems served as protection for TS. Conclusions: The findings reinforce the need for psychiatric evaluation of emotional states, comorbidities and risk of suicide at admission and during treatment for chemical dependence.