Denton Callander

Denton Callander


Research Focus & Metrics

Academic Career Length

15Years (2012-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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16 April 2015 in Ethnicities
Verified
Journal Article
Closed access
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DCDenton Callander
Denton Callander
MHMartin Holt
Martin Holt
CNChristy E. Newman
Christy E. Newman
Sexual racism can be thought of as a specific form of racial prejudice enacted in the context of sex and dating. It is a contentious issue among gay and bisexual men looking for partners online. This study draws upon 14 in-depth interviews conducted between August and October 2012 with gay and bisexual men of colour in Australia. Data were thematically analysed to identify interpretations and experiences of, and reactions to sexual racism online. Understandings of online sexual racism were diverse, ranging from clear ideas about racist and non-racist practices to more ambiguous and contextual interpretations. Nevertheless, all participants described experiences of sexual racism while seeking partners online, which were, in some cases, largely indistinguishable from generic forms of racism. Most described experiences of subtle racism, but there were also cases of blatant and aggressive racial prejudice. Finally, men reacted in a range of ways when confronted with online sexual racism, with strategies ranging from disconnection to adaptation through to confrontation. Our findings highlight that sexual racism – as an expression of racism generally – is an ongoing issue for men who seek out other men online, and that men engage in a range of strategies for mitigating the negative effects of racial prejudice in this domain.

Dustin DuncanDustin Duncan
Dustin Duncan
DHDeMarc A. Hickson
DeMarc A. Hickson
WGWilliam Goedel
William Goedel
DCDenton Callander
Denton Callander
BBBrandon Brooks
Brandon Brooks
JSJohn Schneider
John Schneider
Background: In many parts of the world, stark racial disparities in human immunodeficiency virus (HIV) prevalence, incidence, prevention, and care outcomes persist among gay, bisexual, and other men who have sex with men (MSM), with Black MSM significantly impacted in the United States (U.S.). Individual-level characteristics, including sexual behaviors and socioeconomic status, do not fully account for racial/ethnic disparities in HIV among MSM. We hypothesize that neighborhood contexts and network characteristics influence risk for HIV infection as well as HIV-related prevention and care behaviors. As such, the study design includes the use of real-time geospatial methods and in-depth assessments of multiple network typologies to investigate the impact of neighborhood and network-level factors on HIV prevention and treatment among Black MSM residing in longstanding priority HIV elimination areas in the U.S., namely Chicago, Illinois and in the Deep South (Jackson, Mississippi and New Orleans, Louisiana) (n = 450, n = 50, and n = 100, respectively). We describe the design, sampling methods, data collection, data management methods, and preliminary findings of the ongoing ‘Neighborhoods and Networks (N2) Cohort Study’. Methods/Design: N2 employs a prospective longitudinal design. The sample includes Black MSM participants in Chicago recruited via respondent-driven sampling and assessed every six months over two years of follow-up. Participants enrolled in Jackson and New Orleans are being recruited through existing health and community services and assessed every six months over one year of follow-up. Mobility within and between neighborhoods is being assessed using global positioning system (GPS) technology. Social and sexual networks among Black MSM are being studied through egocentric network inventories as well as newer methods of creating meso-level networks that involve social media (Facebook) and mobile phone contacts. Key HIV prevention outcomes such as pre-exposure prophylaxis (PrEP) care engagement, and HIV/STI (sexually transmitted infections) biomarkers will be examined at baseline and follow-up. Results: As of 31 December 2018, a total of 361 men were enrolled across all study sites: 259 in Chicago and 102 in the Deep South (75 in New Orleans and 27 in Jackson). At baseline, participants ranged in age from 17 to 65 years old (mean = 34.3, standard deviation = 5.1) with 123 men (34.1%) self-reported as HIV positive. While HIV treatment levels were similar between sites, men in the Deep South reported higher rates of adherence than men in Chicago (63.3% versus 49.4%, p = 0.03). Sexual risk profiles were mainly the same between men from different study sites, with 22.9% of men in Chicago and 28.9% in the Deep South reporting consistent condom use during vaginal and anal sex (p = 0.26). Regarding their home neighborhoods, men in the Deep South were more likely than those in Chicago to characterize theirs as having a good reputation (43.1% versus 24.7%, p < 0.001) and as being safe (37.3% versus 21.2%, p = 0.002). Conclusions: The focus on Black MSM in the N2 Study will allow for a nuanced exploration of the attitudes, beliefs, behaviors, and practices of a diverse group of Black MSM. The study is also positioned to provide novel insight about neighborhood and network characteristics that influence HIV-related behaviors. A health equity framework ensures that Black MSM are not explicitly or implicitly deemed as deviant, disordered, or the non-reference group. Findings from N2 will provide guidance for the implementation of more impactful HIV prevention interventions that engage a diverse population of Black MSM as we work toward HIV elimination in the U.S.

20 November 2018 in JMIR Research Protocols
Verified
Journal Article
Open access
DCDenton Callander
Denton Callander
CMClarissa Moreira
Clarissa Moreira
CECarol El-Hayek
Carol El-Hayek
JAJason Asselin
Jason Asselin
CGCaroline van Gemert
Caroline van Gemert
RGRebecca Guy
Rebecca Guy
Journal of Medical Internet Research - International Scientific Journal for Medical Research, Information and Communication on the Internet #Preprint #PeerReviewMe: Warning: This is a unreviewed preprint. Readers are warned that the document has not been peer-reviewed by expert/patient reviewers or an academic editor, may contain misleading claims, and is likely to undergo changes before final publication, if accepted, or may have been rejected/withdrawn. Readers with interest and expertise are encouraged to sign up as peer-reviewer, if the paper is within an open peer-review period. Please cite this preprint only for review purposes or for grant applications and CVs (if you are the author). Background: New biomedical prevention interventions make the control or elimination of some blood -borne viruses (BBVs) and sexually transmissible infections (STIs) increasingly feasible. In response, the World Health Organization and governments around the world have established elimination targets and associated timelines. Objective: This paper describes ACCESS (Australian Collaboration for Coordinated Enhanced Sentinel Surveillance), a national surveillance network designed to monitor public health and evaluate the impact of strategies aimed at controlling BBVs and STIs in Australia. Methods: ACCESS is a sentinel surveillance system comprising health services and pathology laboratories in each of the eight Australian jurisdictions. Sites that provide significant testing or management of BBVs and/or STIs or see populations with particular risks for these infections (‘priority populations’) are included in the network. ACCESS is based on regular and automated extraction of de-identified patient data using specialised software called GRHANITE™, which creates a unique and anonymous identifier from individual patient details. This identifier allows anonymous linkage between and within participating sites, creating a national cohort that allows the evaluation of clinical and public health interventions and related research. Results: As of March 2018, 104 health services (sexual health clinics, general practice clinics, drug and alcohol services, community-led testing services, and hospital outpatient clinics) and 17 pathology laboratories (private and public) were participating in ACCESS. Between 2009 and 2017, ACCESS captured data from 1,171,658 individual patients who attended a participating health service at least once, comprising a total of 7,992,241 consultations. Conclusions: ACCESS is a unique system with the ability to track efforts to control STIs and BBVs – including through the calculation of powerful epidemiological indicators – by identifying response gaps and facilitating the evaluation of programs and interventions. By anonymously linking patients between and within services and over time, ACCESS has exciting potential as a research and evaluation platform.

4 September 2012 in Culture, Health & Sexuality
Verified
Journal Article
Closed access
DCDenton Callander
Denton Callander
MHMartin Holt
Martin Holt
CNChristy E. Newman
Christy E. Newman
Racialised language is a salient and contested aspect of contemporary sexual cultures, particularly in the online domain. This paper explores the ways in which gay men in Australia employ race-related language when using online sex/dating websites. Using inductive content analysis, descriptive categories were developed to identify recurrent patterns in the racialised language employed by website users. A coding framework was then constructed to identify the ‘subject’ (self, other or concept) of each piece of race-related content, its ‘purpose’ (marketing, negative or positive discrimination, commentary) and the ‘position’ adopted (defensive, normalised or critical). Descriptive and comparative analyses revealed differences in the ways in which members of racial groups employed racialised language online. These differences are reviewed in relation to broader discourses on Whiteness and race in Australia, as well as recent community-produced anti-racism campaigns.

3 January 2020 in International Journal of Geographical Information Science
Verified
Journal Article
Closed access
DCDenton Callander
Denton Callander
JMJulie Mooney-Somers
Julie Mooney-Somers
PKPhillip Keen
Phillip Keen
RGRebecca Guy
Rebecca Guy
TDTim Duck
Tim Duck
GPGarrett Prestage
Garrett Prestage
Gay men and lesbian women often demonstrate unique settlement patterns, forming what have been referred to as ‘gayborhoods’. This study sought to provide the first postcode-level estimates of population size and prevalence of gay and lesbian people in Australia. Data on same-gender-partnered households from the Australian Census were combined with information from six different surveys conducted from 2011 to 2017. We estimated that in 2016 there were 132,203 gay men (1.5% of adult males; 95% CI: 1.4–1.6) and 79,931 lesbian women (0.9% of adult females; 95% CI: 0.8–1.0) in Australia. While many postcodes were sparsely populated by gay and lesbian people (40.1% had prevalences of <0.1%), 24.6% were moderately populated (prevalences in the 50-95th percentile) and 2.7% were highly populated (95th percentile). By jurisdiction, the Australian Capital Territory had the highest prevalences of gay men (2.1%; 95% CI: 2.0–2.2) and lesbian women (1.5%; 95% CI: 1.4–1.6). Although the majority of highly populated postcodes were found in major cities (83.7%), some were also found in regional and remote area (16.3%). This method can be applied in other countries to enhance populate estimates. The accompanying dataset can be used to guide service delivery, conduct geographically contextualised research and develop policies relevant to gay men and lesbian women in Australia.

24 June 2020 in Journal of Medical Internet Research
Verified
Journal Article
Open access
LNLong Nguyen
Long Nguyen
MSMark Stoové
Mark Stoové
DBDouglas Boyle
Douglas Boyle
DCDenton Callander
Denton Callander
HMHamish McManus
Hamish McManus
CECarol El-Hayek
Carol El-Hayek
Background: The Australian Collaboration for Coordinated Enhanced Sentinel Surveillance (ACCESS) was established to monitor national testing and test outcomes for blood-borne viruses (BBVs) and sexually transmissible infections (STIs) in key populations. ACCESS extracts deidentified data from sentinel health services that include general practice, sexual health, and infectious disease clinics, as well as public and private laboratories that conduct a large volume of BBV/STI testing. An important attribute of ACCESS is the ability to accurately link individual-level records within and between the participating sites, as this enables the system to produce reliable epidemiological measures. Objective: The aim of this study was to evaluate the use of GRHANITE software in ACCESS to extract and link deidentified data from participating clinics and laboratories. GRHANITE generates irreversible hashed linkage keys based on patient-identifying data captured in the patient electronic medical records (EMRs) at the site. The algorithms to produce the data linkage keys use probabilistic linkage principles to account for variability and completeness of the underlying patient identifiers, producing up to four linkage key types per EMR. Errors in the linkage process can arise from imperfect or missing identifiers, impacting the system’s integrity. Therefore, it is important to evaluate the quality of the linkages created and evaluate the outcome of the linkage for ongoing public health surveillance. Methods: Although ACCESS data are deidentified, we created two gold-standard datasets where the true match status could be confirmed in order to compare against record linkage results arising from different approaches of the GRHANITE Linkage Tool. We reported sensitivity, specificity, and positive and negative predictive values where possible and estimated specificity by comparing a history of HIV and hepatitis C antibody results for linked EMRs. Results: Sensitivity ranged from 96% to 100%, and specificity was 100% when applying the GRHANITE Linkage Tool to a small gold-standard dataset of 3700 clinical medical records. Medical records in this dataset contained a very high level of data completeness by having the name, date of birth, post code, and Medicare number available for use in record linkage. In a larger gold-standard dataset containing 86,538 medical records across clinics and pathology services, with a lower level of data completeness, sensitivity ranged from 94% to 95% and estimated specificity ranged from 91% to 99% in 4 of the 6 different record linkage approaches. Conclusions: This study’s findings suggest that the GRHANITE Linkage Tool can be used to link deidentified patient records accurately and can be confidently used for public health surveillance in systems such as ACCESS.