1 de outubro de 2020

Validity and reliability of the Severity of Dependence Scale (SDS) in a Brazilian sample of drug users

17 de dezembro de 20093min
2000, Vol. 19, No. 4, Pages 451-455

Cleusa P. Ferri, John Marsden, Marcelo de Araujo, Ronaldo R. Laranjeira, Michael Gossop

1National Addiction Centre, Institute of Psychiatry/Maudsley Hospital, London, UK and Psychiatry Department – UNIFESP, São Paulo, Brazil
2National Addiction Centre, Institute of Psychiatry/Maudsley Hospital, London, UK
3Psychiatry Department – UNIFESP, São Paulo, Brazil

The Severity of Dependence Scale (SDS) is a short, five-item scale which provides a measure of degree of dependence upon different drugs. The present study explores the validity and reliability of a Portuguese version of the instrument with a sample of 374 Brazilian drug users. Concurrent validity of the SDS was assessed in relation to reported quantity of drugs used and to DSM-IV dependence items, and test-retest reliability was assessed with a subsample of 42 subjects. The SDS total scores for powder cocaine, crack cocaine, cannabis and alcohol were significantly and highly positively correlated with severity of dependence as measured by DSM-IV,and with the estimated quantity of drugs used in the last month. Test-retest coefficients were high for all drugs studied. Principal components analysis showed that the SDS scores lie on a single dimension with the exception of crack cocaine where scores lie on a single dimension for treatment attenders and on two dimensions for community samples. The results indicate that the Portuguese version of the SDS is a valid research tool for measuring severity of dependence upon powder cocaine (snorted), crack cocaine (smoked), cannabis and alcohol. [Ferri CP,Marsden J, de Araujo M, Laranjeira RR, Gossop M. Validity and reliability of the Severity of Dependence Scale (SDS) in a Brazilian sample of drug users. Drug Alcohol Rev 2000;19:451-455]



Sobre a UNIAD

A Unidade de Pesquisa em álcool e Drogas (UNIAD) foi fundada em 1994 pelo Prof. Dr. Ronaldo Laranjeira e John Dunn, recém-chegados da Inglaterra. A criação contou, na época, com o apoio do Departamento de Psiquiatria da UNIFESP. Inicialmente (1994-1996) funcionou dentro do Complexo Hospital São Paulo, com o objetivo de atender funcionários dependentes.



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