Publications by authors named "Christopher Gianacas"

High blood pressure (BP) is the leading preventable risk factor for death, but only one in three patients achieve target BP control. A key contributor to this problem is poor population awareness of high BP, as the majority of patients are asymptomatic. The Shop-To-Stop Hypertension study is a multicenter, cluster-randomized controlled trial to identify, refer and follow adults in need of hypertension care, whilst raising population-wide awareness.

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Background: The elastic scattering spectroscopy (ESS) device (DermaSensor Inc., Miami, FL) is a noninvasive, painless, adjunctive tool for skin cancer detection.

Objectives: To investigate the performance of the ESS device in the detection of melanoma.

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Purpose: To examine the relationship of early persistent lymphopenia with hospital survival in critically ill patients with and without sepsis to assess whether it can be considered a treatable trait. Methods: Retrospective database analysis of patients with nonelective admission to intensive care units (ICUs) during January 2015 to December 2018. Patients were classified as having sepsis if the Acute Physiology and Chronic Health Evaluation III admission diagnostic code included sepsis or coded for an infection combined with a Sequential Organ Failure Assessment score of ≥2.

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Objectives: Compare two approaches to analyzing time series data-interrupted time series with segmented regression (ITS-SR) and Bayesian structural time series using the CausalImpact R package (BSTS-CI)-highlighting advantages, disadvantages, and implementation considerations.

Study Design And Setting: We analyzed electronic health records using each approach to estimate the antibiotic prescribing reduction associated with an educational program delivered to Australian primary care physicians between 2012 and 2017. Two outcomes were considered: antibiotics for upper respiratory tract infections (URTIs) and antibiotics of specified formulations.

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Background: Despite high blood pressure being the leading preventable risk factor for death, only 1 in 3 patients achieve target blood pressure control. Key contributors to this problem are clinical inertia and uncertainties in relying on clinic blood pressure measurements to make treatment decisions.

Methods: The NEXTGEN-BP open-label, multicenter, randomized controlled trial will investigate the efficacy, safety, acceptability and cost-effectiveness of a wearable blood pressure monitor-based care strategy for the treatment of hypertension, compared to usual care, in lowering clinic blood pressure over 12 months.

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Background: Evidence on the effectiveness of influenza vaccine in preventing antibiotic prescriptions for influenza-like illness (ILI) in adults is limited.

Methods: A primary care-based case-control study was conducted to estimate influenza vaccine effectiveness (VE) against influenza-like illness (ILI) and antibiotic prescribing for ILI in adults aged ≥40 years. Cases were patients diagnosed with ILI from 1 June to 30 September in each year, 2015-2018; a subset of those with ILI prescribed antibiotics was also defined.

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Background: Vaccination against influenza may reduce antibiotic use, but data are limited and imprecise.

Methods: We conducted a case-control study using deidentified data from a large national primary care database to evaluate antibiotic prescribing changes following influenza vaccination in children 1-4 years old attending primary care in the Australian 2018 and 2019 influenza seasons. Cases were prescribed β-lactam or macrolide antibiotics during the influenza season and controls were not.

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serogroup B (MenB) is the most common cause of meningococcal disease in adolescents and young adults. In Australia, MenB vaccination has been available through private prescription since 2014 and has been recommended for at-risk groups including adolescents, young adults who smoke and people medically at risk. For each of these at-risk groups, we estimated cumulative annual coverage of MenB vaccination between 2014 and 2019.

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Introduction: The effectiveness of daily pre-exposure prophylaxis (PrEP) is well established. However, there has been increasing interest in non-daily dosing schedules among gay and bisexual men (GBM). This paper explores preferences for PrEP dosing schedules among GBM at baseline in the demonstration project.

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