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L. Topp · SciRah

Researcher profile · Semantic Scholar

L. Topp

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L. Topp — researcher profile on SciRah

h-index: 34
Works: 89
Citations: 3,728

Most-cited papers

Ecstasy use in Australia: patterns of use and associated harm.
L. Topp, Julie Hando, P. Dillon, A. Roche +1 more
1999Drug and Alcohol Dependence376 citations
Semantic Scholar
Choosing a cut-off on the Severity of Dependence Scale (SDS) for amphetamine users.
L. Topp, R. Mattick
1997Addiction249 citations
Semantic Scholar
The external validity of results derived from ecstasy users recruited using purposive sampling strategies.
L. Topp, B. Barker, L. Degenhardt
2004Drug and Alcohol Dependence163 citations
Semantic Scholar
Uptake of hepatitis C treatment among people who inject drugs attending Needle and Syringe Programs in Australia, 1999–2011
J. Iversen, J. Grebely, L. Topp, H. Wand +2 more
2014Journal of Viral Hepatitis138 citations Open access
Semantic Scholar
Changes in patterns of drug injection concurrent with a sustained reduction in the availability of heroin in Australia.
L. Topp, C. Day, L. Degenhardt
2003Drug and Alcohol Dependence135 citations
Semantic Scholar
Is ecstasy a drug of dependence?
L. Degenhardt, R. Bruno, L. Topp
2010Drug and Alcohol Dependence134 citations Open access
Semantic Scholar
A cross-sectional survey of prevalence and correlates of suicidal ideation and suicide attempts among prisoners in New South Wales, Australia
S. Larney, L. Topp, Devon Indig, Colman O'driscoll +1 more
2012BMC Public Health114 citations Open access
Semantic Scholar
The emergence of potent forms of methamphetamine in Sydney, Australia: a case study of the IDRS as a strategic early warning system.
L. Topp, L. Degenhardt, S. Kaye, S. Darke
2002Drug and Alcohol Review114 citations
Semantic Scholar
Patterns of ecstasy use in Australia: findings from a national household survey.
L. Degenhardt, B. Barker, L. Topp
2004Addiction105 citations
Semantic Scholar
The accessibility, acceptability, health impact and cost implications of primary healthcare outlets that target injecting drug users: a narrative synthesis of literature.
M Mofizul Islam, L. Topp, C. Day, A. Dawson +1 more
2012The International journal on drug policy99 citations
Semantic Scholar
‘Crystal meth’ use among polydrug users in Sydney's dance party subculture: characteristics, use patterns and associated harms
L. Degenhardt, L. Topp
200399 citations
Semantic Scholar
Prevalences and correlates of non-viral injecting-related injuries and diseases in a convenience sample of Australian injecting drug users.
Robyn Dwyer, L. Topp, L. Maher, Robert Power +6 more
2009Drug and Alcohol Dependence93 citations
Semantic Scholar
Australian Drug Trends
L. Topp, S. Darke, R. Bruno, C. Fry +6 more
200187 citations
Semantic Scholar
Injecting-related injury and disease among clients of a supervised injecting facility.
A. Salmon, Robyn Dwyer, Marianne E. Jauncey, I. van Beek +2 more
2009Drug and Alcohol Dependence84 citations
Semantic Scholar
The reliability of sensitive information provided by injecting drug users in a clinical setting: Clinician-administered versus audio computer-assisted self-interviewing (ACASI)
M Mofizul Islam, L. Topp, K. Conigrave, I. van Beek +4 more
2012AIDS Care78 citations
Semantic Scholar
Decreased heroin availability in Sydney in early 2001.
C. Day, L. Topp, David Rouen, S. Darke +2 more
2003Addiction77 citations
Semantic Scholar
Housing Instability among People Who Inject Drugs: Results from the Australian Needle and Syringe Program Survey
L. Topp, J. Iversen, E. Baldry, L. Maher +1 more
2013Journal of urban health76 citations Open access
Semantic Scholar
Can the Severity of Dependence Scale Be Usefully Applied to ‘Ecstasy’?
R. Bruno, A. Matthews, L. Topp, L. Degenhardt +2 more
2009Neuropsychobiology75 citations Open access
Semantic Scholar
A randomised controlled trial of financial incentives to increase hepatitis B vaccination completion among people who inject drugs in Australia.
L. Topp, C. Day, H. Wand, R. Deacon +5 more
2013Preventive Medicine73 citations
Semantic Scholar
A prospective study of hepatitis C incidence in Australian prisoners.
F. Luciani, N. Bretaña, S. Teutsch, J. Amin +5 more
2014Addiction69 citations Open access
Semantic Scholar
The epidemiology of hepatitis C in Australia: Notifications, treatment uptake and liver transplantations, 1997–2006
H. Gidding, L. Topp, Melanie G. Middleton, K. Robinson +6 more
2009Journal of Gastroenterology and Hepatology68 citations Open access
Semantic Scholar
The injection of methadone and benzodiazepines among Sydney injecting drug users 1996-2000: 5-year monitoring of trends from the Illicit Drug Reporting System.
S. Darke, L. Topp, J. Ross
2002Drug and Alcohol Review67 citations
Semantic Scholar
Adapting the Illicit Drug Reporting System (IDRS) to examine the feasibility of monitoring trends in the markets for 'party drugs'.
L. Topp, C. Breen, S. Kaye, S. Darke
2004Drug and Alcohol Dependence65 citations
Semantic Scholar
Linkage into specialist hepatitis C treatment services of injecting drug users attending a needle syringe program-based primary healthcare centre.
M Mofizul Islam, L. Topp, K. Conigrave, Andrew White +4 more
2012Journal of Substance Abuse Treatment62 citations
Semantic Scholar
Cocaine use in New South Wales, Australia, 1996-2000: 5 year monitoring of trends in price, purity, availability and use from the illicit drug reporting system.
S. Darke, S. Kaye, L. Topp
2002Drug and Alcohol Dependence62 citations
Semantic Scholar
Prevalence and predictors of injecting‐related injury and disease among clients of Australia's needle and syringe programs
L. Topp, J. Iversen, A. Conroy, A. Salmon +1 more
2008Australian and New Zealand Journal of Public Health61 citations Open access
Semantic Scholar
Reduction in HCV incidence among injection drug users attending needle and syringe programs in Australia: a linkage study.
J. Iversen, H. Wand, L. Topp, J. Kaldor +1 more
2013American Journal of Public Health60 citations Open access
Semantic Scholar
Defining a service for people who use drugs as 'low-threshold': what should be the criteria?
M Mofizul Islam, L. Topp, K. Conigrave, C. Day
2013The International journal on drug policy48 citations
Semantic Scholar
The monitoring of drug trends in Australia.
F. Shand, L. Topp, S. Darke, T. Makkai +1 more
2003Drug and Alcohol Review44 citations
Semantic Scholar
Are people who inject performance and image-enhancing drugs an increasing population of Needle and Syringe Program attendees?
J. Iversen, L. Topp, H. Wand, L. Maher
2013Drug and Alcohol Review43 citations
Semantic Scholar
Individual-level syringe coverage among Needle and Syringe Program attendees in Australia.
J. Iversen, L. Topp, H. Wand, L. Maher
2012Drug and Alcohol Dependence42 citations
Semantic Scholar
Representativeness of Injecting Drug Users Who Participate in HIV Surveillance: Results From Australia's Needle and Syringe Program Survey
L. Topp, J. Iversen, H. Wand, C. Day +2 more
2008Journal of Acquired Immune Deficiency Syndromes42 citations Open access
Semantic Scholar
Healthcare utilisation and disclosure of injecting drug use among clients of Australia's needle and syringe programs
M Mofizul Islam, L. Topp, J. Iversen, C. Day +2 more
2013Australian and New Zealand Journal of Public Health39 citations Open access
Semantic Scholar
Poor criterion validity of self-reported hepatitis B infection and vaccination status among injecting drug users: a review.
L. Topp, C. Day, G. Dore, L. Maher
2009Drug and Alcohol Review34 citations
Semantic Scholar
Blood-borne virus prevalence and risk among steroid injectors: results from the Australian Needle and Syringe Program Survey.
C. Day, L. Topp, J. Iversen, L. Maher
2008Drug and Alcohol Review33 citations
Semantic Scholar
Drug Crime Prevention and Mitigation: A Literature Review and Research Agenda
D. Weatherburn, L. Topp, R. Midford, S. Allsop
200031 citations
Semantic Scholar
IS THERE A DEPENDENCE SYNDROME FOR ECSTASY
L. Topp, W. Hall, Julie Hando
199731 citations
Semantic Scholar
The applicability of the dependence syndrome to amphetamine.
L. Topp, Shane Darke
1997Drug and Alcohol Dependence30 citations
Semantic Scholar
The Epidemiology of Ecstasy Use and Harms in Australia
L. Degenhardt, A. Roxburgh, M. Dunn, G. Campbell +6 more
2009Neuropsychobiology29 citations Open access
Semantic Scholar
Changes in heroin availability in Sydney, Australia in early 2001
David Rouen, K. Dolan, C. Day, L. Topp +2 more
200129 citations
Semantic Scholar
Is point of access to needles and syringes related to needle sharing? Comparing data collected from pharmacies and needle and syringe programs in south-east Sydney.
Joanne Bryant, L. Topp, Max Hopwood, J. Iversen +2 more
2010Drug and Alcohol Review26 citations
Semantic Scholar
Fifteen years of HIV surveillance among people who inject drugs: the Australian Needle and Syringe Program Survey 1995–2009
L. Topp, C. Day, J. Iversen, H. Wand +1 more
2011AIDS (London)24 citations Open access
Semantic Scholar
Higher HCV antibody prevalence among Indigenous clients of needle and syringe programs
J. Ward, L. Topp, J. Iversen, H. Wand +3 more
2011Australian and New Zealand Journal of Public Health22 citations Open access
Semantic Scholar
Global and Australian Heroin Markets
A. Gibson, L. Degenhardt, L. Topp, C. Day +3 more
200322 citations
Semantic Scholar
The Illicit Drug Reporting System (IDRS) 1996-2000
S. Darke, W. Hall, L. Topp
200022 citations
Semantic Scholar
Sexual behaviour of ecstasy users in Sydney, Australia
L. Topp, Julie Hando, P. Dillon
199922 citations
Semantic Scholar
GHB in Sydney, Australia, 2000-2006: a case study of the EDRS as a strategic early warning system.
M. Dunn, L. Topp, L. Degenhardt
2009The International journal on drug policy19 citations
Semantic Scholar
Sexually transmitted infections, sexual risk behaviours and perceived barriers to safe sex among drug users
M Mofizul Islam, L. Topp, K. Conigrave, P. Haber +2 more
2013Australian and New Zealand Journal of Public Health17 citations Open access
Semantic Scholar
Financial sanctions and the justice system: Fine debts among New South Wales prisoners with a history of problematic substance use
K. Martire, Sandra Sunjic, L. Topp, Devon Indig
201116 citations
Semantic Scholar
Development of immunity following financial incentives for hepatitis B vaccination among people who inject drugs: A randomized controlled trial.
C. Day, M. Shanahan, H. Wand, L. Topp +7 more
2016Journal of Clinical Virology15 citations Open access
Semantic Scholar

Frequent co-authors

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L. Maher×18
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L. Maher — researcher profile on SciRah
C. Day×16
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C. Day — researcher profile on SciRah
J. Iversen×12
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J. Iversen — researcher profile on SciRah
L. Degenhardt×9
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L. Degenhardt — researcher profile on SciRah

×9

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H. Wand — researcher profile on SciRah

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S. Darke — researcher profile on SciRah

M Mofizul Islam×6

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M Mofizul Islam — researcher profile on SciRah

K. Conigrave×6

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K. Conigrave — researcher profile on SciRah

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W. Hall — researcher profile on SciRah

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R. Bruno — researcher profile on SciRah

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I. van Beek — researcher profile on SciRah

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P. Haber — researcher profile on SciRah