Publications by authors named "Helen Zorbas"

Purpose: To improve cancer outcomes for Aboriginal and Torres Strait Islander people through the development and national endorsement of the first population-specific optimal care pathway (OCP) to guide the delivery of high-quality, culturally appropriate, and evidence-based cancer care.

Methods: An iterative methodology was undertaken over a 2-year period, and more than 70 organizations and individuals from diverse cultural, geographic, and sectorial backgrounds provided input. Cancer Australia reviewed experiences of care and the evidence base and undertook national public consultation with the indigenous health sector and community, health professionals, and professional colleges.

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Indigenous Australians experience a substantially higher cancer mortality rate than non-Indigenous Australians. While cancer outcomes are improving for non-Indigenous Australians, they are worsening for Indigenous Australians. Reducing this disparity requires evidence-based and culturally-appropriate guidance.

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Objectives: To systematically assess the evidence for variations in outcomes at each step along the breast cancer continuum of care for Australian women by residential location.

Design: Systematic review.

Methods: Systematic searches of peer-reviewed articles in English published from 1 January 1990 to 24 November 2017 using PubMed, EMBASE, CINAHL and Informit databases.

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Objective: Health-related stigma is associated with negative psychological and quality of life outcomes in lung cancer patients. This study describes the impact of stigma on lung cancer patients' psychological distress and quality of life and explores the role of social constraints and illness appraisal as mediators of effect.

Methods: A self-administered cross-sectional survey examined psychological distress and quality of life in 151 people (59% response rate) diagnosed with lung cancer from Queensland and New South Wales.

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Background: The Quality Audit (BQA) of Breast Surgeons of Australia and New Zealand includes a broad range of data and is the largest New Zealand (NZ) breast cancer (BC) database outside the NZ Cancer Registry. We used BQA data to compare BC survival by ethnicity, deprivation, remoteness, clinical characteristic and case load.

Methods: BQA and death data were linked using the National Health Index.

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Objective: To investigate patient, cancer and treatment factors associated with the residence of female breast cancer patients in lower socioeconomic areas of Australia to better understand factors that may contribute to their poorer cancer outcomes.

Methods: Bivariable and multivariable analyses were performed using the Breast Quality Audit database of Breast Surgeons of Australia and New Zealand. RESULTS Multivariable regression indicated that patients from lower socioeconomic areas are more likely to live in more remote areas and to be treated at regional than major city centres.

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To investigate patient, cancer and treatment characteristics in females with breast cancer from more remote areas of Australia, to better understand reasons for their poorer outcomes, bi-variable and multivariable analyses were undertaken using the National Breast Cancer Audit database of the Society of Breast Surgeons of Australia and New Zealand. Results indicated that patients from more remote areas were more likely to be of lower socio- economic status and be treated in earlier diagnostic epochs and at inner regional and remote rather than major city centres. They were also more likely to be treated by low case load surgeons, although this finding was only of marginal statistical significance in multivariable analysis (p=0.

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Background: The National Breast Cancer Audit Database of the Society of Breast Surgeons of Australia and New Zealand is used by surgeons to monitor treatment quality and for research. About 60% of early invasive female breast cancers in Australia are recorded. The objectives of this study are: (1) to investigate associations of socio-demographic, health-system and clinical characteristics with treatment of invasive female breast cancer by mastectomy compared with breast conserving surgery; and (2) to consider service delivery implications.

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Objective: Early invasive breast cancer data from the Australian National Breast Cancer Audit were used to compare case fatality by surgeon case load, treatment centre location and health insurance status.

Method: Deaths were traced to 31 December 2007, for cancers diagnosed in 1998-2005. Risk of breast cancer death was compared using Cox proportional hazards regression.

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Aim: The study aim was to determine the frequency with which women decline clinicians' treatment recommendations and variations in this frequency by age, cancer and service descriptors.

Design: The study included 36,775 women diagnosed with early invasive breast cancer in 1998-2005 and attending Australian and New Zealand breast surgeons. Rate ratios for declining treatment were examined by descriptor, using bilateral and multiple logistic regression analyses.

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Background: Previous studies generally indicate that synchronous bilateral breast cancers (SBBC) have an equivalent or moderately poorer survival compared with unilateral cases. The prognostic characteristics of SBBC would be relevant when planning adjuvant therapies and follow-up medical surveillance. The frequency of SBBC among early breast cancers in clinical settings in Australia and New Zealand were investigated, plus their prognostic significance, using the Breast Cancer Audit Database of the Society of Breast Surgeons of Australia and New Zealand, which covered an estimated 60% of early invasive lesions in those countries.

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Background:   The study aim was to determine whether age is an independent risk factor for survival from early invasive breast cancer in contemporary Australian clinical settings.

Methods:   The study included 31 493 breast cancers diagnosed in 1998-2005. Risk of death from breast cancer was compared by age, without and with adjustment for clinical risk factors, using Cox proportional hazard regression.

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Background:   Sentinel node biopsy (SNB) has been a major change in surgical technique for the management of early breast cancer. In June 2008, the National Breast and Ovarian Cancer Centre (NBOCC) released evidence-based guidelines for the use of SNB in Australia. During 2010, NBOCC undertook a cohort study to identify the extent to which clinical practice in Australia reflected the recommendations for use of SNB in the 6 months after release of the guidelines.

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Background: Trastuzumab increases disease-free and overall survival in HER-2-positive, early breast cancer. In 2007, the National Breast and Ovarian Cancer Centre recommended that patients with HER-2 positive cancers (node positive or node negative tumours >1 cm) be offered adjuvant trastuzumab with chemotherapy. The aim of this study was to evaluate recent trends in trastuzumab therapy in Australia and New Zealand.

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Unlabelled: Aboriginal and Torres Strait Islander people comprise about 2.5% of the Australian population. Cancer registry data indicate that their breast cancer survivals are lower than for other women but the completeness and accuracy of Indigenous descriptors on registries are uncertain.

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Background: Numerous studies have shown that the majority of women overestimate both their own risk and the populations' risk of developing breast cancer. A number of factors have been found to correlate with perceived risk.

Methods: This paper reports on a telephone survey of a nationally representative sample of approximately 3,000 Australian women aged 30 to 69 years, conducted in 2007, and compares the findings with those of a similar survey conducted in 2003.

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Purpose: To determine if time to diagnosis is associated with stage of disease at diagnosis or survival among women with symptomatic ovarian cancer.

Methods: A representative sample of Australian women (n = 1,463) with ovarian cancer diagnosed between 2002 and 2005 who participated in a population-based case-control study were interviewed regarding the events leading to their diagnosis and were observed for mortality for 5 years.

Results: Of the 1,318 women (90%) who presented to a medical practitioner with symptoms, 55% presented within 1 month, 70% in less than 2 months, and 92% within 6 months of symptom onset.

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Purpose: For many young women with early breast cancer, fertility is a priority. Interventions to retain fertility options generally need to be accessed before chemotherapy, but many women do not receive information regarding these options in a timely fashion. Knowledge about fertility and decisional conflict has not previously been measured in young patients with breast cancer considering future pregnancies.

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Aim: Multidisciplinary care (MDC) is accepted as best practice in cancer treatment planning and care. Despite recognition of the importance of a team approach, limited data are available about the extent to which MDC has been implemented in Australia. The aim of the audit was to investigate the implementation of MDC for five main cancer types across Australia in line with best practice.

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Background: he National Breast Cancer Audit (NBCA) of the Royal Australasian College of Surgeons has collected data on early breast cancer since 1998. In this project, deaths were traced by linkage of NBCA patient identifiers (first three digits of surname and date of birth) with the National Death Index that covers all deaths in Australia.

Methods: Death data were traced to 31 December 2007.

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Objective: To examine Australian women's perceived risk of ovarian cancer, reasons for perceived risk levels, and knowledge of ovarian cancer symptoms at two timepoints (2003 and 2007).

Methods: A computer-assisted telephone (CATI) survey of 2,954 Australian women with no history of ovarian cancer was conducted.

Results: Approximately 60% of women perceived their risk of ovarian cancer was similar to other women of their age; 10% indicated an increased risk, and 30% indicated a lower risk.

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Objective: To describe the diagnostic pathways experienced by a large, representative group of Australian women with ovarian cancer, and to document the time between first presentation to a medical professional and clinical diagnosis.

Design, Setting And Participants: 1463 women with epithelial ovarian cancer from an Australia-wide population-based study (2002-2005) completed a telephone interview in which they described the events that led to the diagnosis of their cancer.

Main Outcome Measures: Number and type of doctors consulted, investigations performed, referral patterns and the time from first presentation to diagnosis.

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