Beverly Powis

The Severity of Dependence Scale (SDS): psychometric properties of the SDS in English and Australian samples of heroin, cocaine and amphetamine users

Michael Gossop, Shane Darke, Paul Griffiths et al. · Addiction · 1995 · 1.3K citations

The Severity of Dependence Scale (SDS): psychometric properties of the SDS in English and Australian samples of heroin, cocaine and amphetamine users

Michael Gossop, Shane Darke, Paul Griffiths et al. · Addiction · 1995 · 500 citations

Substance Use, Total Sds Score, Mental Health +17

Severity of dependence and route of administration of heroin, cocaine and amphetamines

Michael Gossop, Paul Griffiths, Beverly Powis et al. · British Journal of Addiction · 1992 · 325 citations

Preventing opiate overdose fatalities with take‐home naloxone: pre‐launch study of possible impact and acceptability

John Strang, Beverly Powis, David Best et al. · Addiction · 1999 · 182 citations

Cocaine: Patterns of Use, Route of Administration, and Severity of Dependence

Michael Gossop, Paul Griffiths, Beverly Powis et al. · The British Journal of Psychiatry · 1994 · 157 citations

Substance Use, Behavioral Addiction, Drug Policy +19