Australian Primary Care Setting Research Articles

Early diagnosis of peripartum cardiomyopathy with multi-organ point-of-care ultrasounds in an Australian rural primary care setting

Early diagnosis of peripartum cardiomyopathy with multi-organ point-of-care ultrasounds in an Australian rural primary care setting

Prevalence and patterns of comorbidities in older people with type 2 diabetes in Australian primary care settings.

The aim of this study was to identify the prevalence and patterns of comorbidity in community-dwelling older people with type 2 diabetes mellitus (T2DM) attending general practice settings in Australia. This study involveda cross-sectional analysis using the Bettering the Evaluation and Care of Health (BEACH) sub-study data. In a series of sub-studies, a representative sample of general practitioners was asked to record all diagnosed chronic conditions for patients at 40 consecutive encounters using structured paper-based recording forms. The dataset was analysed with descriptive analyses, and exploratory factor analyses were applied to examine comorbidity patterns. Of the 14,042 patients aged 65 years or older, 2688 had a diagnosis of T2DM (19%). Of the 2688 patients with T2DM, hypertension was present in 67% (95% CI: 64.6-70.0), followed by arthritis 52% (95% CI: 48.8-54.8), hyperlipidaemia 45% (95% CI: 41.8-47.9), ischemic heart disease, 23% (95% CI: 20.7-24.9), depression 16% (95% CI: 48.8-54.8), atrial fibrillation 10% (95% CI: 8.9-11.6), congestive heart failure 7% (95% CI: 6.0-8.1), stroke/cerebrovascular accident 7% (95% CI: 5.4-8.2) and peripheral vascular disease 5% (95% CI: 4.4-6.2). We identified two comorbidity patterns among older people with T2DM. The first were psychological and musculoskeletal conditions and the second were cardiovascular conditions and chronic renal failure. The prevalence of cardiovascular and non-cardiovascular comorbidities in community-dwelling older people with T2DM was high. Adequate primary care strategies should be in place to support the long-term care for this population.

Translation of a Diabetes Remission Service into Australian Primary Care: Findings from the Evaluation of DiRECT-Australia.

The Diabetes Remission Clinical Trial (DiRECT) study demonstrated that an intensive and structured weight management program in UK primary care resulted in high rates of diabetes remission in adults with recent onset type 2 diabetes mellitus (T2DM). This study was aimed at evaluating the translation of the DiRECT intervention into an Australian primary care setting. All patients enrolled in the DiRECT-Australia Type 2 Diabetes Remission Service in a region of Sydney (Macarthur region, South Western Sydney, Australia) were included. Eligible participants were aged 20-70 years, noninsulin treated, with T2DM of ≤6 years' duration, and body mass index (BMI) ≥ 27 kg/m2. Total diet replacement of 825-853 kcal/day using meal replacements was implemented for 12 weeks, followed by an ongoing structured program until 52 weeks, with regular follow-up with a general practitioner, dietitian, and/or practice nurse. Of 39 recruited participants, 32 (82.1%) and 27 (69.2%) completed 12 weeks and 52 weeks of the structured program, respectively. Decrease in weight by -12.0 kg (95% CI: -9.6, -14.4; p < 0.001) and -9.1 kg (95% CI: -5.2, -12.9; p < 0.001) and decrease in glycated haemoglobin (HbA1c) by -1.1% (95% CI: -0.6, -1.6; p < 0.001) and -0.6% (95% CI: -0.1, -1.1; p = 0.013) were observed at 12 and 52 weeks, respectively. At the end of 12 and 52 weeks, 93.8% (30/32) and 55.6% (15/27) of those with follow-up data met the criteria for diabetes remission, respectively. Quality of life and wellbeing scores increased over the course of 12 weeks, remaining significantly higher at 52 weeks. Participants reported they would be willing to pay A$92.50 (95% CI: A$75.80, A$109.30) per fortnight for the low-calorie meal replacement shakes. These findings support the feasibility of a structured diabetes remission service in an Australian primary care setting to achieve improvements in glycaemia, weight, and quality of life and wellbeing, and suggest a substantial willingness to pay for diet replacement products among participants.

A qualitative study of the perceptions and experiences of participants and healthcare professionals in the DiRECT-Australia type 2 diabetes remission service.

The UK Diabetes Remission Clinical Trial (DiRECT) study was replicated in an Australian primary care setting. This qualitative study aimed to explore and understand the perceptions and experiences of both participants and healthcare professionals (HCPs) involved in the DiRECT-Australia Type 2 Diabetes Remission Service. All participants and HCPs delivering the service were invited to participate in semi-structured interviews via online videoconferencing. The interview guides explored perceptions and experiences in DiRECT-Australia, covering aspects such as barriers and facilitators to recruitment and participation, motivations and challenges across service phases, adequacy of support provided and the overall acceptability of the service. All interviews were audio-recorded, transcribed verbatim and analysed using thematic analysis. Eight DiRECT-Australia participants and six HCPs (three general practitioners, two practice nurses and one dietitian) participated. Four overarching themes were identified: (1) Enablers and barriers to recruitment and continuous participation in DiRECT-Australia; (2) Motivators and overcoming barriers across the total diet replacement, food reintroduction and weight maintenance phases; (3) Importance of participant-HCP interactions and continuous support; (4) Acceptance and long-term need for DiRECT-Australia. Adherence to total diet replacement was less challenging than anticipated by participants. Transitioning to the food reintroduction phase was difficult but overcome through HCP support. DiRECT-Australia was well accepted by both participants and HCPs, and participants expressed willingness to continue with the service, if provided on a long-term basis. Both participants and HCPs were highly interested in the new diabetes remission service set up in an Australian primary care setting. The acceptability of DiRECT-Australia was underscored by participants emphasising the effectiveness of the service in achieving significant weight loss and diabetes remission. There is a need for long-term and wider implementation of the service to ensure that anyone with recent onset type 2 diabetes is offered the best possible chance to achieve remission.

Are remote health clinics primary health care focused? Validation of the Primary Health Care Engagement (PHCE) Scale for the Australian remote primary health care setting.

To test and validate a measure of primary health care (PHC) engagement in the Australian remote health context. PHC principles include quality improvement, community participation and orientation of health care, patient-centred continuity of care, accessibility, and interdisciplinary collaboration. Measuring the alignment of services with the principles of PHC provides a method of evaluating the quality of care in community settings. A two-stage design of initial content and face validity evaluation by a panel of experts and then pilot-testing the instrument via survey methods was conducted. Twelve experts from clinical, education, management and research roles within the remote health setting evaluated each item in the original instrument. Panel members evaluated the representativeness and clarity of each item for face and content validity. Qualitative responses were also collected and included suggestions for changes to item wording. The modified tool was pilot-tested with 47 remote area nurses. Internal consistency reliability of the Australian Primary Health Care Engagement scale was evaluated using Cronbach's alpha. Construct validity of the Australian scale was evaluated using exploratory factor analysis and principal component analysis. Modifications to suit the Australian context were made to 8 of the 28 original items. This modified instrument was pilot-tested with 47 complete responses. Overall, the scale showed high internal consistency reliability. The subscale constructs 'Quality improvement', 'Accessibility-availability' and 'population orientation' showed low levels of internal consistency reliability. However, the mean inter-item correlation was 0.31, 0.26 and 0.31, respectively, which are in the recommended range of 0.15 to 0.50 and indicate that the items are correlated and are measuring the same construct. The Australian PHCE scale is recommended as a tool for the evaluation of health services. Further testing on a larger sample may provide clarity over some items which may be open to interpretation.

Intensive Lifestyle Intervention for Remission of Early Type 2 Diabetes in Primary Care in Australia: DiRECT-Aus.

We aimed to assess whether remission of type 2 diabetes (T2D) could be achieved with a low-energy total diet replacement (TDR) in an Australian primary care setting. Individuals aged 20-65 years with T2D duration up to 6 years, BMI >27.0 kg/m2, and not treated with insulin were prescribed a 13-week low-energy TDR (Optifast; Nestlé Health Science) followed by 8-week structured food reintroduction and 31-week supported weight maintenance. The primary outcome was T2D remission at 12 months. A total of 155 participants comprised the intention-to-treat population. At 12 months, T2D remission was achieved in 86 (56%) participants, with a mean adjusted weight loss of 8.1% (95% CI 7.2-9.1). Two serious adverse events requiring hospitalization related to the study intervention were reported. At 12 months T2D remission was achieved for one in two Australian adults in a primary care setting.

Transformation to a patient-centred medical home led and delivered by an urban Aboriginal and Torres Strait Islander community, and association with engagement and quality-of-care: quantitative findings from a pilot study

BackgroundThe patient-centred medical home (PCMH) is a model of team-based primary care that is patient-centred, coordinated, accessible, and focused on quality and safety. In response to substantial population growth and increasing demand on existing primary care services, the Institute for Urban Indigenous Health (IUIH) developed the IUIH System of Care-2 (ISoC2), based on an international Indigenous-led PCMH. ISoC2 was piloted at an urban Aboriginal and Torres Strait Islander Community-Controlled Health Service in South-East Queensland between 2019–2020, with further adaptations made to ensure its cultural and clinical relevance to local Aboriginal and Torres Strait Islander people. Little is known on the implementation and impact of PCMH in the Australian Indigenous primary care setting. Changes in implementation process measures and outcomes relating to engagement and quality-of-care are described here.MethodsDe-identified routinely collected data extracted from electronic health records for clients regularly attending the service were examined to assess pre-post implementation changes relevant to the study. Process measures included enrolment in PCMH team-based care, and outcome measures included engagement with the health service, continuity-of-care and clinical outcomes.ResultsThe number of regular clients within the health service increased from 1,186 pre implementation to 1,606 post implementation; representing a small decrease as a proportion of the services’ catchment population (38.5 to 37.6%). In clients assigned to a care team (60% by end 2020), care was more evenly distributed between providers, with an increased proportion of services provided by the Aboriginal and Torres Strait Islander Health Worker (16–17% versus 10–11%). Post-implementation, 41% of clients had continuity-of-care with their assigned care team, while total, preventive and chronic disease services were comparable pre- and post-implementation. Screening for absolute cardiovascular disease risk improved, although there were no changes in clinical outcomes.ConclusionsThe increase in the number of regular clients assigned to a team and their even distribution of care among care team members provides empirical evidence that the service is transforming to a PCMH. Despite a complex transformation process compounded by the COVID-19 pandemic, levels of service delivery and quality remained relatively stable, with some improvements in risk factor screening.

Incidence and prevalence of alopecia areata in the Australian primary care setting: A retrospective analysis of electronic health record data.

Alopecia areata (AA) is a common immune-mediated non-scarring hair loss, with a worldwide incidence between 0.57% and 3.8%. The incidence and prevalence of AA in the Australian general population have not been previously reported. To describe the incidence and prevalence of AA in Australia using primary care data. A secondary objective was to identify common demographic characteristics, comorbidities and treatment patterns among Australians living with AA. We analysed electronic health record data captured from a national clinical practice management software over a 10-year index period between 2011 and 2020 calendar years, inclusive. The incidence of new-onset AA and the prevalence of active records with AA were estimated. Differences in incidence by sociodemographic groups, and patterns of treatment were also evaluated. There were 976 incident AA records. The incidence of new-onset AA in the total study cohort was 0.278 per 1000 person-years (95% CI 0.26-0.295). By age, the incidence was highest in the 19- to 34-year-old age bracket (0.503 per 1000 person-years: 95% CI 0.453-0.554). AA incidence was lower among females than males (IRR 0.763, p < 0.001, 95% CI 0.673-0.865). Among active records, 520 were prevalent AA records. AA point prevalence at 31/12/2020 was 0.13% (1.26 per 1000 persons; 95% CI 1.15-1.37). This is the first study to describe the epidemiology (incidence and point prevalence) and management of AA in the Australian primary health-care population through large-scale database analysis. Incidence and prevalence findings were consistent with earlier estimates from other regions.

Rationale & Study Design of a Study Based on Implementation Science Guided Principles: A Novel Model of Care for the Management of High Cardiovascular Risk Patients With Elevated Low Density Lipoprotein Cholesterol (LDL-C) in the Australian Primary Care Setting

Rationale & Study Design of a Study Based on Implementation Science Guided Principles: A Novel Model of Care for the Management of High Cardiovascular Risk Patients With Elevated Low Density Lipoprotein Cholesterol (LDL-C) in the Australian Primary Care Setting

Exploring nurse practitioner practice in Australian rural primary health care settings: A scoping review.

Australians in rural areas experience limited access to services and poorer health outcomes than residents of metropolitan areas. Nurse practitioners (NPs) were introduced in 2000 to reduce pressure on the health system, address workforce shortages and improve rural populations' access to health care services. This scoping review sought to identify, examine and synthesise research evidence of NP practice in Australian rural primary health care services to better understand how NPs are addressing service gaps in rural areas and to identify existing gaps in our knowledge. Peer-reviewed and grey literature from July 2012 to June 2022 was accessed from seven electronic databases, grey literature and hand searching of reference lists and citations. From 154 articles, 19 articles of relevance were identified. Several projects describe the processes required for success, whilst others reported the challenges and barriers encountered. Limited research evidence of rural NP practice exists with a significant gap about how roles operate and their value in primary health care. Uptake and envisaged benefits of rural primary health care NP roles have yet to be realised, with barriers to implementing and sustaining NP roles persisting. Low-level awareness with ambiguity at health service and community level adversely impact on systematic implementation of NP roles. Robust evaluations demonstrating the value of NP skills and practice are needed in combination with bipartisan support from all levels of health care and government providing adequate funding to enable effective implementation of NP roles in poorly resourced rural areas.

A snapshot of Australian primary health care nursing workforce characteristics and reasons they work in these settings: A longitudinal retrospective study.

This article aimed to provide a snapshot of demographics and professional characteristics of nursing and midwifery workforce in Australian primary health care (PHC) settings during 2015-2019 and factors that influenced their decisions to work in PHC. Longitudinal retrospective survey. Longitudinal data that were collected from a descriptive workforce survey were retrieved retrospectively. After collation and cleaning, data from 7066 participants were analysed using descriptive and inferential statistics in SPSS version 27.0. The majority of the participants were female, aged between 45 and 64 years old and working in general practice. There was a small yet steady increase in the number of participants in the 25-34 age group and a downward trend in the percentage of postgraduate study completion among participants. While factors perceived most/least important to their decision to work in PHC were consistent during 2015-2019, these factors differed among different age groups and postgraduate qualification holders. This study's findings are both novel and supported by previous research. It is necessary to tailor recruitment and retention strategies to nurses/midwives' age groups and qualifications to attract and retain highly skilled and qualified nursing and midwifery workforce in PHC settings.

Enhanced primary care after hospitalization: General practitioner, pharmacist and patient feedback from the REMAIN HOME trial.

Pharmacist and general practitioner (GP) collaborative models of care are continuing to evolve in the Australian primary care setting. The REMAIN HOME study investigated whether a pharmacist integrated into 14 different primary care teams in general practice (the "practice pharmacist model") reduces readmission to hospital for patients prescribed five or more long term medicines or high risk comorbidities. The aim of this paper is to describe the attitudes of GPs, patients, and practice pharmacists towards this model of pharmacist and GP collaboration. To explore the views and opinions about the model of care (pharmacist integration into general practice), participating GPs were invited to complete a survey that included the 13-item validated Attitudes Toward Collaboration Instrument for GPs (ATCI-GP) one month after the pharmacist had been integrated into the practice. Survey instruments were also created for patients and pharmacist participating in the intervention. These were deployed after the initial consultation and at the end of the intervention period respectively, to elicit each stakeholders' views and experiences of the service. Data were analysed using descriptive statistics. In total, 48GPs, 43/101 patients (43%) and 11/13 practice pharmacists (85%) completed the survey. The majority of GPs strongly agreed or agreed with all statements of the ATCI-GP, indicating support for the practice-integrated pharmacist model. Most patients agreed that there was a role for a pharmacist in their general practice (n=28, 76%), and that they would like to see the pharmacist again (n=34, 79%). Pharmacists indicated that they enjoyed the role (n=11, 91%) and found the position professionally satisfying (n=9, 82%). Most pharmacists agreed that co-location (inside the general practice itself, rather than in a co-located pharmacy) was beneficial (n=8, 73%) and all pharmacists (100%) acknowledged the benefits of having access to patient medical records. Free text comments from GPs were enthusiastic overall, although some concerns about the financial viability of the model in the current setting were raised. The primary limitation of the study is the anonymous nature of the survey, meaning clustering of responses across the 14 sites could not be determined. A practice pharmacist model of care in the Australian primary care setting appears to be accepted by GPs, patients and practice pharmacists and provides promising evidence that this model of care is likely to be well accepted if implemented more broadly in the Australian healthcare setting, provided that it can be appropriately remunerated.

Healthcare services use by patients with heart failure in Australia: Findings from the SHAPE study.

General practitioners (GPs) play a central role in healthcare, serving as the first point of contact, makingappropriate referrals and coordinating care for chronic conditions such as heart failure (HF). We sought to determine healthcare use by people with HF in primary care. In this Study of Heart failure in the Australian Primary carE setting (SHAPE), we analysed records of 1.93million adult patients who attended a total of 43 practices between 1July 2013 and30 June 2018. We identified and examined the data of 20,219 patients with HF to describe the frequency of visits and use of Medicare Benefits Schedule items. Patients with HF saw GPs 14.4 times per annum on average; 59.5% had a General Practice Management Plan (GPMP), 2.9% of GPMPs were reviewed annually or more frequently, and 46.8% of patients had been referred to a cardiologist. A total of 3761 had coexisting anxiety or depression, and of these 37.1% had a mental health plan. Patients with HF visit their GP frequently, with many not reaching guideline therapy nor referred to cardiologists. Low use of care planning and reviews presents an opportunity for GPs to improve care.

Prevalence of myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) in Australian primary care patients: only part of the story?

BackgroundME/CFS is a disorder characterized by recurrent fatigue and intolerance to exertion which manifests as profound post-exertional malaise. Prevalence studies internationally have reported highly variable results due to the 20 + diagnostic criteria. For Australia, the prevalence of ME/CFS based on current case definitions is unknown.ObjectivesTo report prevalence of ME/CFS in patients aged ≥ 13 years attending Australian primary care settings for years 2015–2019, and provide context for patterns of primary care attendance by people living with ME/CFS.MethodologyConducted in partnership with the Patient Advisory Group, this study adopted a mixed methods approach. De-identified primary care data from the national MedicineInsight program were analyzed. The cohort were regularly attending patients, i.e. 3 visits in the preceding 2 years. Crude prevalence rates were calculated for years 2015–2019, by sex, 10-year age groups, remoteness and socioeconomic status. Rates are presented per 100,000population (95% confidence intervals (CI)). Qualitative data was collected through focus groups and in-depth 1:1 interview.ResultsQualitative evidence identified barriers to reaching diagnosis, and limited interactions with primary care due to a lack of available treatments/interventions, stigma and disbelief in ME/CFS as a condition.In each year of interest, crude prevalence in the primary care setting ranged between 94.9/100,000 (95% CI: 91.5–98.5) and 103.9/100,000 population (95%CI: 100.3–107.7), equating to between 20,140 and 22,050 people living with ME/CFS in Australia in 2020. Higher rates were observed for age groups 50-59 years and 40-49 years. Rates were substantially higher in females (130.0–141.4/100,000) compared to males (50.9–57.5/100,000). In the context of the qualitative evidence, our prevalence rates likely represent an underestimate of the true prevalence of ME/CFS in the Australian primary care setting.ConclusionME/CFS affects a substantial number of Australians. Whilst this study provides prevalence estimates for the Australian primary care setting, the qualitative evidence highlights the limitations of these. Future research should focus on using robust case ascertainment criteria in a community setting. Quantification of the burden of disease can be used to inform health policy and planning, for this understudied condition.

Mixed diabetic retinopathy screening coverage results in Indigenous Australian primary care settings: A nurse-led model of integrated diabetes care.

To determine eye screening coverage and adherence to national eye screening recommendations of a nurse-led retinal image-based model of diabetes education and eye screening in Indigenous primary care clinics. A pre-post study. During January 2018-March 2020 Indigenous Australians with diabetes at three regional Australian clinics were offered eye screening by a nurse-diabetes educator/retinal imager. At the main site the nurse recruited/scheduled participants, and at satellite sites local clinic staff did so. Visual acuity was tested and digital retinal images acquired and graded. Participants were offered rescreening at or before 12-months based on baseline results. In total 203 adults with diabetes attending Indigenous primary care clinics were screened, with divergent results based on the recruitment methods. At the main clinic 135 of 172 eligible adults (79%) were screened. At the satellite sites, 15 of 85 (18%) and 21 of 77 (27%) diabetes patients were screened. Combined coverage 51%. A credentialed nurse-educator implemented a model of retinal image-based diabetes education, measured eye screening coverage and adherence to national eye screening guidelines, met the 'acceptable 75% eye screening coverage' benchmark and improved patient eye screening guideline adherence at the one site where the nurse-educator had access to patient recruitment and scheduling. This novel nurse-led primary care iDEES model of retinal image-based diabetes education can improve the currently low Indigenous diabetes eye screening coverage in Australia. Importantly, the nurse-managed iDEES model of integrated diabetes care is readily adaptable to other settings and populations where access to and/or uptake of eye care is suboptimal. ANZCTRN1261800120435.

Acceptability and usability of 'One Key Question'® in Australian primary health care.

Around one-third of pregnancies in women attending antenatal care are unintended. This means a substantial number of women enter pregnancy without optimising their health prior to conception. Primary care practitioners are uniquely placed to counsel women about how to plan for pregnancy and about how to avoid unintended conception. The One Key Question® (OKQ®) tool facilitates a discussion of pregnancy intention and opens up subsequent discussions regarding preconception or contraception care. This study aimed to assess the acceptability and usability of the OKQ® tool in the Australian primary care setting. We undertook a pilot study consisting of quantitative and qualitative componentsacross two general practice settings in Sydney, New South Wales, Australia. We documented women's responses to being asked the OKQ® as part of their consultation. We collected data on the characteristics of the participating GPs and their experience of using the OKQ® tool and conducted semi-structured interviews with all participating GPs. Fifty-six patients were asked the OKQ®, with the majority stating they were happy to be asked about their reproductive choices and felt it was relevant to their general health. The 10 participating GPs felt the OKQ® was easy to use and although 62.5% reported it extended the consultation time, the medium time taken was 2min. GPs felt framing the OKQ® helped introduce pregnancy intention discussions into a consultation. The OKQ® is acceptable to patients and easy for GPs to use. This tool facilitates a proactive and routine discussion to enhance the delivery of preconception care and contraceptive counselling.

POSA388 Attainment of Low-Density Lipoprotein Cholesterol Targets in Patients Treated with Combination Therapy in Australia: A Retrospective Cohort Study of a Primary Care Database

The attainment of low-density lipoprotein cholesterol (LDL-C) therapeutic goals in real-world settings is not well characterised, especially among patients receiving combination lipid-lowering therapy (LLT). We evaluated the LDL-C goal achievement in patients treated with combination LLT in the Australian primary care setting.

Ten-Year Trends in the Use of Oral Anticoagulants in Australian General Practice Patients With Atrial Fibrillation.

Objective: Appropriate use of oral anticoagulants (OACs) reduces the risk of stroke in patients with atrial fibrillation (AF). The study characterized the prescribing of OACs in people with AF in the Australian primary care setting over 10 years. Design: Retrospective population study. Setting and Participants: We performed 10 sequential cross-sectional analyses of patients with a recorded diagnosis of AF between 2009 and 2018 using national general practice data. The proportion of patients with AF who were prescribed an OAC based on their stroke risk was examined. Primary and secondary outcomes: The primary outcome was the proportion of high stroke risk patients who were prescribed an OAC over a decade. The secondary outcome was variation in OAC prescribing among general practices. Results: The sample size of patients with AF ranged from 9,874 in 2009 to 41,751 in 2018. The proportion who were prescribed an OAC increased from 39.5% (95% CI 38.6–40.5%) in 2009 to 52.0% (95% CI 51.5–52.4%) in 2018 (p for trend < 0.001). During this time, the proportion of patients with AF and high stroke risk who were prescribed an OAC rose from 41.7% (95% CI 40.7–42.8%) to 55.2% (95% CI 54.7–55.8%; p for trend < 0.001) with the direct-acting oral anticoagulants accounting for over three-quarters of usage by 2018. There was substantial variation in OAC prescribing between general practices. In 2018, the proportion of moderate to high stroke risk patients who were prescribed an OAC was 38.6% (95% CI 37.2–40.1%) in the lowest practice site quintiles and 65.6% (95% CI 64.5–66.7%) in the highest practice site quintiles. Conclusions: Over the 10 years, OAC prescribing in high stroke risk patients with AF increased by one-third. There was considerable variation in OAC prescribing between general practices.

Exploring the cost-effectiveness of a Dutch collaborative stepped care intervention for the treatment of depression and/or anxiety when adapted to the Australian context: a model-based cost-utility analysis

Abstract Aims Depression and anxiety are among the most common mental health conditions treated in primary care. They frequently co-occur and involve recommended treatments that overlap. Evidence from randomised controlled trials (RCTs) shows specific stepped care interventions to be cost-effective in improving symptom remission. However, most RCTs have focused on either depression or anxiety, which limits their generalisability to routine primary care settings. This study aimed to evaluate the cost-effectiveness of a collaborative stepped care (CSC) intervention to treat depression and/or anxiety among adults in Australian primary care settings. Method A quasi-decision tree model was developed to evaluate the cost-effectiveness of a CSC intervention relative to care-as-usual (CAU). The model adapted a CSC intervention described in a previous Dutch RCT to the Australian context. This 8-month, cluster RCT recruited patients with depression and/or anxiety (n = 158) from 30 primary care clinics in the Netherlands. The CSC intervention involved two steps: (1) guided self-help with a nurse at a primary care clinic; and (2) referral to specialised mental healthcare. The cost-effectiveness model adopted a health sector perspective and synthesised data from two main sources: RCT data on intervention pathways, remission probabilities and healthcare service utilisation; and Australia-specific data on demography, epidemiology and unit costs from external sources. Incremental costs and incremental health outcomes were estimated across a 1-year time horizon. Health outcomes were measured as disability-adjusted life years (DALYs) due to remitted cases of depression and/or anxiety. Incremental cost-effectiveness ratios (ICERs) were measured in 2019 Australian dollars (A$) per DALY averted. Uncertainty and sensitivity analyses were performed to test the robustness of cost-effectiveness findings. Result The CSC intervention had a high probability (99.6%) of being cost-effective relative to CAU. The resulting ICER (A$5207/DALY; 95% uncertainty interval: dominant to 25 345) fell below the willingness-to-pay threshold of A$50 000/DALY. ICERs were robust to changes in model parameters and assumptions. Conclusions This study found that a Dutch CSC intervention, with nurse-delivered guided self-help treatment as a first step, could potentially be cost-effective in treating depression and/or anxiety if transferred to the Australian primary care context. However, adaptations may be required to ensure feasibility and acceptability in the Australian healthcare context. In addition, further evidence is needed to verify the real-world cost-effectiveness of the CSC intervention when implemented in routine practice and to evaluate its effectiveness/cost-effectiveness when compared to other viable stepped care interventions for the treatment of depression and/or anxiety.

Abstract 13354: Effectiveness of a Complex Intervention Based on Electronic Decision Support to Improve Management of Cardiovascular Disease Risk in Primary Healthcare: A Cluster-randomised Controlled Trial

Introduction: Cardiovascular disease (CVD) risk management is suboptimal in Australian primary healthcare. Following trials demonstrating efficacy of individual components, we developed a complex intervention comprised primarily of electronic point-of-care decision support, availability of cardiovascular polypills and a pharmacy-based adherence program. We sought to determine whether this combined multifaceted intervention, compared with usual care, would improve control of CVD risk factors in the Australian primary care setting. Methods and Results: In a parallel-arm cluster randomized trial, 71 general practices were allocated 1:1 either to the intervention or usual care. The primary outcome was the proportion of patients at high CVD risk and not on optimal preventive treatments at baseline (“high-risk under-treated”) achieving both blood pressure (BP) and low density lipoprotein (LDL) cholesterol targets at study end (BP ≤140/90 mmHg, or ≤130/80 mmHg in people with diabetes or albuminuria; LDL &lt;2.0 mmol/L). All outcomes were evaluated using automated extracts from the electronic medical record. After a median period of 15 months follow-up, among 4477 high-risk under-treated patients in whom follow-up data were available, there was a negligible difference between randomized groups in the proportion achieving SBP and LDL cholesterol targets (19.6% vs. 20.1%; RR 1.06 [95% CI: 0.85 to 1.32]; p=0.59). There was also no major impact of the intervention on any pre-specified secondary outcomes, mostly relating to risk factor screening, preventive medication prescription and risk factor levels. Uptake of all components of the intervention was poor, with greatest use observed for the electronic decision support component (used at least once in 10.7% of high-risk under-treated patients) and minimal use of the other two interventions. Conclusions: Despite the proven efficacy of individual components, this complex multifaceted intervention was poorly adopted and did not lead to relevant improvements in cardiovascular risk factor outcomes.