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Featured researches published by Apo Demirkol.


International Journal of Geriatric Psychiatry | 2016

Time to diagnosis in young-onset dementia and its determinants: the INSPIRED study

Brian Draper; Monica Cations; Fiona White; Julian N. Trollor; Clement Loy; Henry Brodaty; Perminder S. Sachdev; Peter Gonski; Apo Demirkol; Robert G. Cumming; Adrienne Withall

The objective of this study is to identify factors determining the time to diagnosis for young‐onset dementia (YOD), defined as dementia with symptom onset before age 65 years, by mapping the diagnostic pathways.


Drug and Alcohol Review | 2015

Comparing treatment-seeking codeine users and strong opioid users: Findings from a novel case series

Suzanne Nielsen; Bridin Murnion; Adrian Dunlop; Louisa Degenhardt; Apo Demirkol; Peter Muhleisen; Nicholas Lintzeris

INTRODUCTION AND AIMS Few studies have described those seeking treatment for codeine dependence. This study aimed to compare patients presenting for treatment where either codeine or a strong pharmaceutical opioid (oxycodone or morphine) was the principal drug of concern to understand if codeine users may have unique treatment needs. DESIGN AND METHODS Retrospective case review of 135 patients from three geographical areas in New South Wales, Australia. Cases where the principal drug of concern was codeine (n = 53) or a strong pharmaceutical opioid (oxycodone or morphine, n = 82) were compared. Differences in demographic characteristics, pain history, mental health, substance use history and, subsequently, the treatment that was received were examined. RESULTS People whose principal drug of concern was codeine were more likely to be female (66% vs. 37%, P < 0.001), employed (43% vs. 22%, P < 0.01) and use only one pharmaceutical opioid (91% vs. 49%, P < 0.001). There was no difference in age between the codeine group (mean 38.6 years) and the strong opioid group (39.3 years). Opioid substitution therapy was the most common treatment received by both groups although codeine patients were more likely to be treated with buprenorphine than methadone (odds ratio = 7.7, 95% confidence interval 2.2-27.2, P < 0.001) and more likely to attempt withdrawal (odds ratio = 2.6, 95% confidence interval 1.2-5.3, P = 0.010). DISCUSSION AND CONCLUSIONS There are important differences between codeine-dependent patients and strong prescription opioid-dependent patients. Further work should explore the outcomes of withdrawal versus maintenance treatment for codeine users.


Drug and Alcohol Review | 2016

Treating codeine dependence with buprenorphine: Dose requirements and induction outcomes from a retrospective case series in New South Wales, Australia

Suzanne Nielsen; Raimondo Bruno; Bridin Murnion; Adrian Dunlop; Louisa Degenhardt; Apo Demirkol; Peter Muhleisen; Nicholas Lintzeris

INTRODUCTION AND AIMS Codeine dependence is an emerging public health concern, yet no studies have specifically examined the treatment of codeine dependence. Given the lower potency of codeine it cannot be assumed that buprenorphine dose requirements for heroin dependence will generalise to codeine. This is the first study to examine buprenorphine treatment for codeine dependence. DESIGN AND METHODS Retrospective case series of 19 codeine-dependent treatment entrants who received sublingual buprenorphine maintenance treatment through six specialist inpatient and outpatient treatment centres. Baseline codeine doses and buprenorphine dose at days 7 and 28 were collected, in addition to details on general demographics, pain and mental health, substance use and outcomes after 28 days of buprenorphine treatment. RESULTS A significant linear relationship was found between initial codeine dose and dose of buprenorphine given at days 7 and 28 for the codeine dose range of 50-960 mg day-1 (mean: 564 mg; 95% confidence interval 431-696 mg). Median buprenorphine dose was 12.0 mg (interquartile range 9.5 mg, range 4-32 mg) at day 7 and 16.0 mg (interquartile range 13.5 mg, range 4-32 mg) at day 28. Buprenorphine doses received were markedly higher than estimated codeine doses based on standard dose conversion tables. DISCUSSION AND CONCLUSIONS With increasing presentations relating to codeine dependence, these findings provide important guidance to clinicians. Buprenorphine doses were consistently higher than doses estimated based on the dose of codeine consumed, and were comparable with doses used in the treatment of dependence with heroin and more potent prescription opioids. [Nielsen S, Bruno R, Murnion B, Dunlop A, Degenhardt L, Demirkol A, Muhleisen P, Lintzeris N. Treating codeine dependence with buprenorphine: Dose requirements and induction outcomes from a retrospective case series in New South Wales, Australia. Drug Alcohol Rev 2015].


Drug and Alcohol Review | 2012

Individual versus team-based case-management for clients of opioid treatment services: An initial evaluation of what clients prefer

Carolyn Day; Apo Demirkol; Maggie Tynan; Kenneth Curry; Susan Hines; Nicholas Lintzeris; Paul S. Haber

INTRODUCTION AND AIMS Case-management is a client-centred intervention to improve the coordination and continuity of delivery of services for people with complex needs. This service has been incorporated into opioid treatment programs in various ways. This study was undertaken to compare two case-management models, termed individual case-management (ICM) and team-based case-management (TBCM). This study aims to describe the new TBCM and client attitudes to, and acceptance of, this model compared with ICM. DESIGN AND METHODS Clients from two opioid treatment programs, one implementing ICM and one implementing the TBCM, were recruited to undertake a self-complete survey examining satisfaction with case-management during dosing hours over 7 months. Surveys took approximately 10 min to complete. RESULTS One hundred and sixty-three clients were surveyed (62 ICM, 101 TBCM). Clients were demographically similar, but differed in terms of treatment and drug use characteristics. Significantly higher ratings of case-management were reported from TBCM compared with ICM clients for help with opiate use (P < 0.001), other drug use (P < 0.001), mental health (P < 0.001), accommodation (P = 0.023), relationships/parenting (P = 0.003) and physical health (P = 0.002) and clinic services in terms of fairness and consistency, safety, respect, staff quality and confidentiality (P < 0.001). Compared with ICM clients, TBCM clients were more likely to report ease of access to case-management (P < 0.001), wait significantly less time to see a case-manager (38% vs. 7% seen same day) and 93% and 47% of clients, respectively, reported satisfaction with treatment (P < 0.001). DISCUSSION AND CONCLUSIONS These initial data indicate client acceptance and satisfaction with the TBCM model. Further evaluation of the model, including cost-effectiveness, is warranted.


PLOS ONE | 2017

Why aren't people with young onset dementia and their supporters using formal services? Results from the INSPIRED study

Monica Cations; Adrienne Withall; Ruth Horsfall; Nicole Denham; Fiona White; Julian N. Trollor; Clement Loy; Henry Brodaty; Perminder S. Sachdev; Peter Gonski; Apo Demirkol; Robert G. Cumming; Brian Draper

Background/Aims Despite reporting high levels of burden, supporters of people with young onset dementia (YOD) underuse formal community services. Previous quantitative studies in YOD are of limited utility in guiding service design because they did not consider important contextual barriers to service use. The aim of this study was to identify all relevant barriers and describe the service features considered most important to improving uptake by people with YOD and their supporters. Methods Eighty-six people with consensus-confirmed YOD (mean onset age 55.3 years) and/or their primary supporter participated in quantitative interviews, and 50 also participated in one of seven qualitative focus groups. Interview participants reported levels of community service use and reasons for non-use, functional impairment, behavioural and psychological symptoms, supporter burden, social network, and informal care provision. Focus group participants expanded on reasons for non-use and aspects of an ideal service. Results Although at least one community service was recommended to most participants (96.8%), 66.7% chose not to use one or more of these. Few of the clinical or demographic factors included here were related to service use. Qualitative analyses identified that lack of perceived need, availability, and YOD-specific barriers (including ineligibility, unaffordability, lack of security, lack of childcare) were commonly reported. Five aspects of an ideal service were noted: unique, flexibile, affordable, tailored, and promoting meaningful engagement. Conclusion People with YOD and their families report that formal community services do not meet their personal and psychological needs. Researchers can provide ongoing assessment of program feasibility, suitability, and generalisability.


Journal of Clinical and Experimental Neuropsychology | 2018

Cognitive screening in substance users: Diagnostic accuracies of the Mini-Mental State Examination, Addenbrooke’s Cognitive Examination–Revised, and Montreal Cognitive Assessment

Nicole Ridley; Jennifer Batchelor; Brian Draper; Apo Demirkol; Nicholas Lintzeris; Adrienne Withall

ABSTRACT Introduction: Despite the considerable prevalence of cognitive impairment in substance-using populations, there has been little investigation of the utility of cognitive screening measures within this context. In the present study the accuracy of three cognitive screening measures in this population was examined—the Mini-Mental State Examination (MMSE), the Addenbrooke’s Cognitive Examination–Revised (ACE–R), and the Montreal Cognitive Assessment (MoCA). Method: A sample of 30 treatment-seeking substance users and 20 healthy individuals living in the community were administered the screening measures and a neuropsychological battery (NPB). Agreement of classification of cognitive impairment by the screening measures and NPB was examined. Results: Results indicated that the ACE–R and MoCA had good discriminative ability in detection of cognitive impairment, with areas under the receiver-operating characteristic (ROC) curve of .85 (95% confidence interval, CI [.75. .94] and .84 (95% CI [.71, .93]) respectively. The MMSE had fair discriminative ability (.78, 95% CI [.65, .93]). The optimal cut-score for the ACE–R was 93 (impairment = score of 92 or less), at which it correctly classified 89% of individuals as cognitively impaired or intact, while the optimal cut-score for the MoCA was <26 or <27 depending on preference for either specificity or sensitivity. The optimal cut-score for the MMSE was <29; however, this had low sensitivity despite good specificity. Conclusions: These findings suggest that the MoCA and ACE–R are both valid and time-efficient screening tools to detect cognitive impairment in the context of substance use.


Drug and Alcohol Review | 2017

Opioid agonist doses for oxycodone and morphine dependence: Findings from a retrospective case series.

Suzanne Nielsen; Raimondo Bruno; Louisa Degenhardt; Apo Demirkol; Nicholas Lintzeris

INTRODUCTION Use of opioid agonist treatments for prescription opioid (PO) dependence is rapidly increasing. Current guidelines are based on research with heroin users. This study aimed to examine methadone and buprenorphine dose requirements for PO-dependent people. DESIGN AND METHODS A retrospective case series of PO-dependent patients entering methadone and buprenorphine treatment. Daily oral morphine equivalent (OME) doses at baseline were calculated using standard dose conversion calculations. Dose conversion tables were used to estimate opioid agonist doses, based on starting dose of PO. Baseline methadone and buprenorphine dose at days 7 and 28 were examined. Linear models were fit to the data. RESULTS Participants (n = 44) were 67% male, mean age 41 years (SD 10 years); 69% reported a pain condition. The methadone group (n = 21) had a mean PO dose of 704.5 mg OME (SD 783.5 mg) prior to treatment, and mean methadone dose of 45.3 mg (SD 13.1 mg) at day 7 and 61.6 mg (SD 20.8 mg) at day 28. The buprenorphine group (n = 23) had a mean PO dose of 771.7 mg OME (SD 867.7 mg) prior to treatment, with a mean dose of 14.6 mg (SD 8.3 mg) at day 7 and 18.1 (SD 8.9 mg) at day 28. Linear relationships were not found between OME and opioid agonist dose. CONCLUSIONS Opioid agonist dosages varied substantially between individuals, and from predicted dosages based on dose conversion tables. Use of conversion tables to guide selection of opioid agonist dosage may compromise patient safety. [Nielsen S, Bruno R, Degenhardt L, Demirkol A, Lintzeris N. Opioid agonist doses for oxycodone and morphine dependence: Findings from a retrospective case series Drug Alcohol Rev 2017;36:311-316].


Journal of Addictions Nursing | 2013

Society and its influences on drug use among young individuals in Tehran, Iran.

Jila Mirlashari; Apo Demirkol; Mahvash Salsali; Hassan Rafiey; Jahanfar Jahanbani

AbstractIllicit Drug use poses a substantial public health problem around the world, mainly affecting young people. Current estimates suggest that Iran has the highest rate of opium addiction per capita in the world. It has been suggested that multiple elements contribute to the process of drug use. The aim of this study is to explore the probable components in the society that might play a role in the initiation of drug use among young adults. The study is qualitative in nature. Twenty four in-depth interviews were conducted with drug-using young men (n = 10) and women (n = 10) and their family members (n = 4). Based on our data analysis, developing a pro-drug attitude, conformist attitude of society toward treating youth and young individuals, and having weak approach toward prevention were identified as important determinants of substance use. We recommend the need for early intervention, especially for at-risk communities. The results of this research suggest that dealing with a major problem such as drug use needs a comprehensive assessment of the context in which young people live and use substances. According to our findings, exploring young drug users experiences is not only important but also useful for policy makers to develop more effective prevention and intervention programs.


Drug and Alcohol Review | 2018

Understanding an emerging treatment population: Protocol for and baseline characteristics of a prospective cohort of people receiving treatment for pharmaceutical opioid dependence: Pharmaceutical opioid dependence treatment cohort study

Suzanne Nielsen; Nicholas Lintzeris; Bridin Murnion; Louisa Degenhardt; Raimondo Bruno; Paul S. Haber; Jennifer Johnson; Mark Hardy; Stephen Ling; Craig Saddler; Adrian Dunlop; Apo Demirkol; Catherine Silsbury; Nghi Phung; Jennie Houseman; Briony Larance

INTRODUCTION AND AIMS Despite large increases in pharmaceutical opioid dependence and related mortality, few studies have focused on the characteristics and treatment experiences of those with pharmaceutical opioid dependence. We describe the formation of a prospective cohort of people receiving treatment for pharmaceutical opioid dependence and describe their baseline characteristics. DESIGN AND METHODS People who had entered treatment for pharmaceutical opioid dependence (n = 108) were recruited through drug treatment services in New South Wales, Australia. We describe baseline characteristics of those that commenced pharmaceutical opioids for pain or other reasons and conducted a thematic analysis of responses regarding their treatment experience. RESULTS Mean age was 41 years (SD 11), half were male (48%). Just over half reported lifetime heroin use (57%). Oxycodone (49%) and codeine (29%) were the most common opioids reported. Most (85%) reported past-year problematic pain, 38% reported chronic pain. Half (52%) reported moderate to severe depression symptoms. Most (66%) commenced opioids for pain, and this group were older, less likely to report a previous overdose and less likely to report use of illicit drugs compared to those commencing for other reasons. Five themes related to treatment expectations: (i) stigma; (ii) the restrictive nature of treatment; (iii) knowledge; (iv) pain; and (v) positive experience with buprenorphine. DISCUSSION AND CONCLUSIONS This study describes the complexities in an important emerging treatment population of pharmaceutical opioid-dependent people. Findings highlights that addressing knowledge and perceptions around treatment may be critical to address the rising mortality associated with pharmaceutical opioid dependence.


Drugs and Alcohol Today | 2017

Homelessness among clients of Sydney’s supervised injecting facility

Allison M. Salmon; Vendula Belackova; Ricardo Starling Schwanz; Marianne Jauncey; Sarah Hiley; Apo Demirkol

Purpose The Uniting Medically Supervised Injecting Centre (MSIC) opened in Sydney, Australia, in May 2001. Homelessness among people who inject drugs (PWID) in Australia has been increasing, and establishing how supervised injecting facilities (SIFs) might best support clients into housing is an important goal. The purpose of this paper is to update knowledge regarding the accommodation status of MSIC clients, thereby supporting a better understanding of the complex needs of these clients. Design/methodology/approach Client accommodation status at MSIC registration (first visit) and in a brief survey (conducted in May 2016) were compared; unstable accommodation was defined as rough sleeping, couch surfing, hostel, boarding house or crisis accommodation. The bivariate logistic regression analysis was used to explore the association between socio-demographics and accommodation status at both time points; a paired t-test was used to compare the visit records for those who reported stable and unstable accommodation in May 2016. Findings Of 232 clients who were present at MSIC during the week the Brief Survey was conducted, 107 participated. Most were male (79 per cent) with a mean age of 41.4 years. A total of 64 (60 per cent) identified as living in unstable accommodation; having increased from 40 per cent at the time of registration (first visit). There were significant positive associations between unstable accommodation status and unemployment, imprisonment and history of overdose, all measured at registration. In May 2016, unstable accommodation status was significantly associated with age of first injection and with unemployment status (as measured at registration); those living in unstable accommodation in May 2016 had a lower number of visits, a lower number of referrals to health and social services and a lower number of overdoses at MSIC than those living in a stable accommodation. Originality/value The rates of unstable accommodation among MSIC clients have been increasing. These findings highlight the importance of SIFs and drug consumption rooms as venue to address the essential needs of PWID, such as housing. The window of opportunity to support PWID who experience housing instability seems to be narrower than for those who live in stable accommodation.

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Suzanne Nielsen

National Drug and Alcohol Research Centre

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Adrienne Withall

University of New South Wales

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Brian Draper

University of New South Wales

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Louisa Degenhardt

National Drug and Alcohol Research Centre

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Fiona White

University of New South Wales

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