Referral for publicly funded aged care services in Indigenous populations: An exploratory cohort study of ethnic variation in Aotearoa New Zealand.

OBJECTIVES: As people age, they are more likely to require support to maintain activities of daily living. Referral for formal assessment of need (assessed using the 'international Resident Assessment Instrument' [interRAI]) is the first step to access publicly funded services in Aotearoa New Zealand (NZ). It is unclear whether ethnic access inequities present in other areas of the NZ health system occur in this referral process. This exploratory research aimed to explore ethnic variation in referrals for interRAI assessment, and associated factors. METHODS: A retrospective cohort study of all new referrals for aged care services for those 55-plus, received in 2018 by Waitemata District Health Board (WDHB), was conducted. The primary outcome was referral outcome (assessment and no assessment). Secondary outcomes included time from referral to assessment, reason for referral, mortality and, in the assessed cohort, assessment outcome. RESULTS: New referrals (n = 3263) were ethnically representative of the general older adult population in WDHB. Maori were younger and more likely to be referred for higher-level care needs than non-Maori, non-Pasifika (NMNP) (p = 0.03). There was no significant difference in referral outcome, time to assessment or mortality between ethnicities. NMNP were more likely to access lower-level care services than Maori or Pasifika older adults (p = 0.002). CONCLUSIONS: Ethnicity was not associated with aged care service assessment access once people were referred for publicly funded services, nor was it associated with time to assessment or mortality in this exploratory study. Maori had higher care needs than NMNP at the time of referral.

Health profile of residents of retirement villages in Auckland, New Zealand: findings from a cross-sectional survey with health assessment.

OBJECTIVES: Retirement villages (RV) have expanded rapidly, now housing perhaps one in eight people aged 75+ years in New Zealand. Health service initiatives might better support residents and offer cost advantages, but little is known of resident demographics, health status or needs. This study describes village residents-their demographics, socio-behavioural and health status-noting differences between participants who volunteered and those who were sampled. DESIGN: Cross-sectional study of village residents. The cohort formed will also be used for a longitudinal study and a randomised controlled trial. Village managers (sometimes after consulting residents) decided if representative sampling could be undertaken in each village. Where sampling was not approved, volunteers were sought. SETTING: 33 RV were included from a total of 65 villages in Auckland, New Zealand. PARTICIPANTS: Residents (n=578) were recruited either by sampling (n=217) or as volunteers (n=361) during 2016-2018. Each completed a survey and an International Resident Assessment Instrument (interRAI) health needs assessment with a gerontology nurse specialist. RESULTS: Median age of residents was 82 years, 158 (27%) were men; 61% lived alone. Downsizing (77%), less stress (63%) and access to healthcare assistance (61%) were most common reasons for entry. During the 2 weeks prior to survey, 34% received home supports and 10% personal care. Hypertension, heart disease, arthritis and pain were reported by over 40%. Most common unmet needs related to managing cardiorespiratory symptoms (50%) and pain (48%). Volunteers and sampled residents differed significantly, mainly in socio-behavioural respects. CONCLUSIONS: Common conditions including hypertension, arthritis and atrial fibrillation, are recorded in interRAI as text, and thus overlooked in interRAI reports. Levels of unmet need indicate opportunities to improve health services to better manage chronic conditions. Healthcare service providers and village operators could cooperate to design and test service initiatives that better meet residents' needs and offer cost benefits. TRIAL REGISTRATION NUMBER: ACTRN12616000685415.

Pathways to ambulatory sensitive hospitalisations for Maori in the Auckland and Waitemata regions.

AIM: Ambulatory Sensitive Hospitalisations (ASH) are a group of conditions potentially preventable through interventions delivered in the primary health care setting. ASH rates are consistently higher for Maori compared with non-Maori. This study aimed to establish Maori experience of factors driving the use of hospital services for ASH conditions, including barriers to accessing primary care. METHOD: A telephone questionnaire exploring pathways to ASH was administered to Maori (n=150) admitted to Auckland and Waitemata District Health Board (DHB) hospitals with an ASH condition between January 1st-June 30th 2015. RESULTS: A cohort of 1,013 participants were identified; 842 (83.1%) were unable to be contacted. Of the 171 people contactable, 150 agreed to participate, giving an overall response rate of 14.8% and response rate of contactable patients of 87.7%. Results demonstrated high rates of self-reported enrolment, utilisation and preference for primary care. Many participants demonstrated appropriate health seeking behaviour and accurate recall of diagnoses. While financial barriers to accessing primary care were reported, non-financial barriers including lack of after-hours provision (12.6% adults, 37.7% children), appointment availability (7.4% adults, 17.0% children) and lack of transport (13.7% adults, 20.8% children) also featured in participant responses. CONCLUSIONS: Interventions to reduce Maori ASH include: timely access to primary care through electronic communications, increased appointment availability, extended opening hours, low cost after-hours care and consistent best management of ASH conditions in general practice through clinical pathways. Facilitated enrolment of ASH patients with no general practitioner could also reduce ASH. Research into transport barriers and enablers for Maori accessing primary care is required to support future interventions.

Different needs or treated differently? Understanding ethnic inequalities in coronary revascularisation rates.

BACKGROUND: Several studies have reported major ethnic inequalities in cardiac revascularisation. This paper attempts to explain why in New Zealand, Maori and Pacific patients may be less likely to receive cardiac revascularisation interventions than Europeans. METHODS: Angiograms of 55 Maori, 45 Pacific and 100 age-sex matched European patients with ST elevation myocardial infarction were reviewed by two cardiologists blinded to the patients' ethnicity to determine ethnic differences in actual and recommended revascularisation likelihood. RESULTS: Maori and Pacific patients were 18% (95% C.I. 6%-29%) less likely to receive cardiac revascularisation procedures compared to European patients. If intervention had been based on the recommendation from blinded angiogram review they would have been 14% (2%-24%) less likely to receive revascularisation. Maori and Pacific were significantly more likely to be recommended for CABG (RR=2.9; C.I. 1.4-5.8) and less likely for PCI (RR=0.60; 0.48-0.75). Maori and Pacific were at significantly higher risk of under-treatment overall (RR=5.0; 1.1-22.8) and for CABG (RR=8.0; 1.0-64.0), but not for PCI (RR=2.0; 0.2-22.1). However these relative risks became non-significant when cases not eligible for surgery due to comorbidities were excluded. CONCLUSIONS: Maori and especially Pacific STEMI patients present with a pattern of ischaemic heart disease that is less amenable to PCI, even after allowing for differences in the number of diseased vessels and diabetes prevalence. The lower likelihood of Maori and Pacific patients receiving recommended CABG is largely explained by higher comorbidity prevalence.

The Health Quality and Safety Commission: making good health care better.

New Zealand has one of the best value health care systems in the world, but as a proportion of GDP our spending on health care has increased every year since 1999. Further, there are issues of quality and safety in our system we must address, including rates of adverse events. The Health Quality and Safety Commission was formed in 2010 as a crown agent to influence, encourage, guide and support improvement in health care practice in New Zealand. The New Zealand Triple Aim has been defined as: improved quality, safety and experience of care; improved health and equity for all populations; and best value for public health system resources. The Commission is pursuing the Triple Aim via two fundamental objectives: doing the right thing by providing care supported by the best evidence available, focused on what matters to each individual patient, and doing the right thing right, first time, by making sure health care is safe and of the highest quality possible. Improvement efforts must be supported by robust but economical measurements. New Zealand has a strong culture of quality, so the Commission's role is to work with our colleagues to make good health care better.

Initiation and maintenance of cardiovascular medications following cardiovascular risk assessment in a large primary care cohort: PREDICT CVD-16.

AIM: To examine whether use of a standardized cardiovascular disease (CVD) risk assessment recommended by national guidelines is associated with appropriate initiation and maintenance of medication in a large primary care cohort. METHODS AND DESIGN: A total of 90,631 people aged 30-80 years were followed for up to 3 years after a formal CVD risk assessment was undertaken between January 2006 and October 2009, during routine primary care visits in New Zealand. Patients either had prior CVD or had their CVD risk estimated using a modified Framingham prediction equation for fatal or non-fatal CVD events. The individual risk profiles were anonymously linked to national dispensing data for blood-pressure-lowering and lipid-lowering medications in the 6-month period before and in consecutive 6-month blocks after the baseline CVD risk assessment. RESULTS: At baseline, a combination of blood-pressure-lowering and lipid-lowering therapy was already being used by about two-thirds of patients with prior CVD, one-quarter with a 5-year CVD risk greater than 10% (approximately 20% 10-year risk), and one-tenth with CVD risk below this level. Among these previously treated patients, dispensing rates for blood-pressure-lowering, lipid-lowering, or both medications together declined by only 4⊟16% up to 3 years after baseline assessment, irrespective of risk category. Among patients untreated at baseline, combination therapy was initiated within 6 months for 21% with prior CVD, 16% with 5-year CVD risk greater than 15% (approximately 30% 10-year risk and the national drug-treatment threshold), 10% with 5-year CVD risk between 10 and 14% (approximately 20⊟29% 10-year risk), and 3% in the lowest risk category. Across the study population, patients with prior CVD had the highest dispensing rates for each category of medication, and incrementally higher dispensing rates were noted as CVD risk group increased. CONCLUSIONS: In this primary care cohort, most patients already using CVD medications at the time of the baseline CVD risk assessment maintained treatment over a maximum of 3 years follow up, irrespective of their estimated baseline risk. Among patients untreated at baseline, subsequent dispensing rates were strongly related to estimated CVD risk group. Around 15⊟20% of untreated patients meeting national drug-treatment criteria commenced combination pharmacotherapy within 6 months of CVD risk assessment.

Improving the productivity of elective surgery through a new 'package of care'.

In response to a need to improve the productivity and throughput of elective surgical services, one district health board (DHB) in New Zealand has introduced a 'package of care' (POC) in which incentive-based, risk-sharing contracts were developed collaboratively between DHB managers, surgeons and anaesthetists. The POC includes throughput targets and facilitates consistent surgical teams and the cohorting of patients. Whilst many staff are very supportive of the POC, some are of the view that it conflicts with the ideals and principles of working in a public health system, and creates inequities amongst the hospital staff. Analysis indicates that, after controlling for age, casemix and complexity the POC has resulted in shorter theatre times, shorter lengths of stay and lower average inpatient event costs compared with standard care at the public hospital. An unintended consequence could be that the POC may encourage throughput of less complex cases at the expense of more complex cases. The average complexity and range of cases performed publicly should be carefully monitored to ensure this does not occur.

Ethnic inequalities in incidence, survival and mortality from abdominal aortic aneurysm in New Zealand.

BACKGROUND: Ethnic variation in abdominal aortic aneurysm (AAA) incidence, survival and mortality is not well documented and yet has important equity implications for screening programmes. This study quantifies ethnic differences in hospital incidence, mortality and survival from AAA among Maori, Pacific, Asian and European/other ethnicities in New Zealand (NZ). METHODS: Retrospective analysis of linked NZ hospital and death register records identified all patients admitted to a public hospital with a diagnosis of AAA and deaths from AAA from 1996 to 2007. Patients were grouped by ethnicity as Asian, Maori, Pacific or European/other. RESULTS: Compared with the European/other group, Maori were 8.3 years younger at first admission, had higher mortality rates (RR=1.30, 95% CI 1.06 to 1.60 for men; RR=2.66, CI 2.13 to 3.31 for women), lower 1-year cumulative relative survival (60% vs 73% for men and 56% vs 67% for women; p<0.0001 for both) and were much less likely to have their aneurysm repaired electively (39.6% vs 61.1%; p<0.00001). Also, Maori women but not men were found to have a significantly higher standardised incidence rate (RR=1.56, 95% CI 1.37 to 1.79). In contrast, the incidence rate ratio for Asians (both men and women) was just 0.38 (95% CI 0.27 to 0.54 and 0.30 to 0.47, respectively) and both sexes also had a significantly lower mortality rate than European/other. Pacific men but not women also had a significantly lower incidence rate and frequency of aneurysm repair (40.0%; p=0.027). CONCLUSIONS: Ethnic variation in the incidence, mortality and cumulative relative survival from AAA in NZ resembles ethnic inequalities in other health outcomes. This provides additional support for screening on equity grounds.

Interpretation of two nutrition content claims: a New Zealand survey.

OBJECTIVE: To determine how various population groups in New Zealand interpret the nutrition content claims '97% fat free' and 'no added sugar' on food labels. METHODS: A survey of adult supermarket shoppers was conducted at 25 Auckland supermarkets over a six-week period in 2007. Supermarkets were located in areas where greater than 10% of the resident population were known to be Maori, Pacific or Asian, based on 2001 Census meshblock data. Four questions in the survey assessed understanding and interpretation of the nutrition content claims '97% fat free' and 'no added sugar'. RESULTS: There were 1,525 people who completed the survey, with approximately equal representation from Maori, Pacific, Asian and New Zealand European and Other ethnicities. Nearly three-quarters (72%) of participants correctly estimated the fat content of a 100 g product that was '97% fat free', and understood that a product with 'no added sugars' could contain natural sugar. However, up to three-quarters of Maori, Pacific, and Asian shoppers assumed that if a food carried a '97% fat free' or 'no added sugar' claim it was therefore a healthy food. Similarly, low-income shoppers were significantly more likely than medium- or high-income shoppers to assume that the presence of a claim meant a food was definitely healthy. CONCLUSION: Percentage fat free and no added sugar nutrition content claims on food are frequently misinterpreted by shoppers as meaning the food is healthy overall and appear to be particularly misleading for Maori, Pacific, Asian and low-income groups. IMPLICATIONS: Nutrition content claims have potential for harm if the food they are placed on is not healthy overall. Such claims should therefore only be permitted to be placed on healthy foods.

The accuracy of ethnicity data in primary care and its impact on cardiovascular risk assessment and management--PREDICT CVD-8.

BACKGROUND: Accurate ethnicity data are a prerequisite for evidence-based cardiovascular risk assessment and management according to national guidelines. AIMS: (i) To investigate the accuracy of ethnicity data in primary care medical records by comparing them with self-identified ethnicity. (ii) To determine the clinical impact of ethnicity misclassification on cardiovascular risk assessment and management. METHODS: A random sample of 870 patients from 18 general practices (who had ethnicity collected from their medical record as part of cardiovascular risk assessment using PREDICT, a web-based decision support tool) were sent a postal questionnaire asking their self-identified ethnicity using the 2001 Census ethnicity question. RESULTS: Data were available for 665 people (77% response rate) who completed the postal questionnaire. Ethnicity in the primary care record and self-identified ethnicity from the questionnaire were identical for 68% of respondents at Statistics New Zealand Level 2 coding. Data concordance varied from 9.8% for the non-New Zealand European ethnic group to 90.9% for New Zealand European. The primary care record agreed with self-identified ethnicity for 64.9% of Maori respondents. Fortunately, when the same ethnicity data were categorised using the Statistics New Zealand ethnic group prioritisation rules and applied within PREDICT, which adds a risk weighting for Maori, Pacific, and Indian subcontinent peoples, the impact of misclassification was small. The main reason was that about half of misclassifications occurred between ethnic groups classified in the same high cardiovascular risk category. For about 6% of Maori, Pacific, and Indian subcontinent people in our study this misclassification could potentially have delayed risk assessment and resulted in under-treatment. In contrast, about 1.5% of those with other ethnicities may have undergone a premature risk assessment and been over-treated. CONCLUSION: The clinical impact of ethnicity misclassification on cardiovascular risk assessment and management in primary care is modest because much of the misclassification does not alter cardiovascular risk classification. Nevertheless, efforts to improve the accuracy of ethnicity classification in primary care need to continue in order to support the sector's ability to monitor health service utilisation, outcomes, and performance related indicators.

Integrated electronic decision support increases cardiovascular disease risk assessment four fold in routine primary care practice.

BACKGROUND: A decade of cardiovascular disease (CVD) risk-based guidelines, education programmes and widespread availability of paper-based risk prediction charts have not significantly influenced targeting of CVD risk management in New Zealand primary care practice. A web-based decision support system (PREDICT-CVD), integrated with primary care electronic medical record software was developed as one strategy to address this problem. METHODS: A before-after audit of 3564 electronic patient records assessed the impact of electronic decision support on documentation of CVD risk and CVD risk factors. Participants were patients meeting national guideline criteria for CVD risk assessment, registered with 84/107 (78.5%) general practitioners (GPs) in one large primary care organization who used electronic patient medical records, and had PREDICT-CVD installed. The GPs received group education sessions, practice IT support and a small risk assessment payment. Four weeks of practice visit records were audited from 1 month after installation of PREDICT-CVD, and during the same 4-week period 12 months earlier. RESULTS: Less than 3% of eligible patients had a documented CVD risk before PREDICT-CVD installation. This increased four-fold (RR=4.0; 95% confidence interval 2.4-6.5) after installation and documentation of all relevant CVD risk factors also increased significantly. CONCLUSION: Documentation of CVD risk in primary care patient records in New Zealand is negligible, despite being recommended as a prerequisite for targeted treatment for over 10 years, suggesting that previous strategies were ineffective. We demonstrate that integrated electronic decision support can quadruple CVD risk assessment in just one cycle of patient visits.

Gaps in primary care documentation of cardiovascular risk factors.

BACKGROUND: New Zealand guidelines recommend that cardiovascular risk management should be informed by the absolute risk of a cardiovascular event. This requires knowledge of a person's age, sex, ethnicity, medical and family history, blood pressure, total and HDL cholesterol, diabetes, and smoking status. AIM: To establish the extent of primary care documentation of cardiovascular risk factors. METHODS: An audit of electronic patient records was conducted in practices affiliated with an Auckland primary care organisation (ProCare Health Ltd). The audited population were patients eligible for risk assessment (all Maori and a random sample of non-Maori) who had a consultation with their general practitioner during a four week study period (1 year before the doctor first used cardiovascular electronic clinical decision support software). Audit nurses searched for risk factors documented prior to the study period. RESULTS: The records of 1680 individuals from 84 doctors were audited. The study periods prior to which the records were inspected ranged from August 2001 to June 2003. The proportions of records with risk factors documented were: blood pressure 81.8%, cholesterol 62.4%, smoking status 41.5%, diabetes status 16.1%, all these risk factors 6.8%. Recording of blood pressure and of cholesterol was higher in those with cardiovascular disease or diabetes. Recording of blood pressure increased with increasing age, then levelled off at about age 60 years. Documentation of cholesterol was lowest in the oldest and youngest age groups, and in women (at all ages) compared to men. CONCLUSIONS: Primary care documentation of cardiovascular risk factors was incomplete. Whilst many doctors may know whether patients are smokers or have diabetes, systematic documentation of these factors in particular, is not occurring. In order to realise the large potential benefits associated with population-based cardiovascular risk assessment and management, a substantial investment by government, healthcare organisations, health professionals, and patients is required to collect and record this information.

Will a web-based cardiovascular disease (CVD) risk assessment programme increase the assessment of CVD risk factors for Maori?

BACKGROUND: Maori suffer disproportionately from cardiovascular disease despite the national priority of reducing inequalities. National guidelines on the clinical management of CVD risk recommend a comprehensive risk assessment be completed as a prerequisite for identifying patients most likely to benefit from treatment. METHODS: A retrospective audit of GPs using PREDICT-CVD (an electronic risk assessment and management tool) was designed with adequate explanatory power for Maori to determine if it could increase CVD risk assessment without increasing inequalities. 1680 electronic medical records (EMRs) prior to implementation and 1884 after implementation of PREDICT were audited. RESULTS: Documentation of CVD risk increased from 3.2% of EMRs to 14.7% of EMRs in Maori, and from 2.8% to 10.5% in non-Maori. The documentation of individual CVD risk factors also increased post-implementation of the tool. CONCLUSIONS: The implementation of PREDICT-CVD was as likely to increase documentation of CVD risk assessment and risk factors in Maori as in non-Maori. However documentation was still low in Maori despite known high prevalence of CVD risk factors. A comprehensive quality-driven implementation programme is recommended, including targeting risk assessment for those most in need.

Coronary artery bypass graft surgery in New Zealand's Auckland region: a comparison between the clinical priority assessment criteria score and the actual clinical priority assigned.

AIMS: To describe the cohort of patients waiting for Coronary Artery Bypass Graft (CABG) surgery in the Auckland region; compare the Clinical Priority Assessment Criteria (CPAC) score with the actual priority assigned; and to assess the impact of a patient's demographic characteristics on the CPAC score and the assigned priority. METHODS: An electronic register was developed to capture all patients who had a CPAC form completed for isolated CABG surgery during the period June 2002 to September 2004 in the Auckland region. CPAC scores and clinical priority assigned were collected from the CABG booking form. Demographic characteristics came from the booking form (age, gender) or linkage via the National Health Index (NHI) number (ethnicity, deprivation score). RESULTS: The cohort displayed severe coronary artery disease and symptoms: 70% had class 3 or class 4 angina; 89% had their ability to work, live independently, or care for dependents threatened; 65% had three-vessel coronary disease; and 26% had left-main coronary disease. The CPAC score correlated only modestly with the actual clinical priority assigned, with an extremely wide range of scores for any given clinical priority. The mean CPAC score varied by the age of the patient, level of deprivation, and ethnicity--with higher mean scores among male patients who were Maori, Pacific, or more socioeconomically deprived. Clinical priority varied less by demographic characteristics than did the CPAC score, except more women than men were assigned the 'emergency' category. Despite higher CPAC scores for Maori and Pacific men, these did not translate to greater urgency in clinical priority. CONCLUSIONS: The CPAC scoring system is used to limit access onto the CABG surgery waiting list in Auckland, but is not used to prioritise patients as to the urgency of surgery once on the list. The challenge is to determine why clinicians do not consider that the CPAC score is adequate to prioritise the urgency of surgery and to build in a process whereby any such score can be continuously evaluated and improved. We have demonstrated that the establishment of an electronic register of such patients can provide timely analysis of patterns of practice and could be used on a national scale to improve future CPAC scoring systems.

Disparities in indigenous health: a cross-country comparison between New Zealand and the United States.

OBJECTIVES: We compared the health statuses of the indigenous populations of New Zealand and the United States with those of the numerically dominant populations of these countries. METHODS: Health indicators compared included health outcome measures, preventive care measures, modifiable risk factor prevalence, and treatment measures. RESULTS: In the case of nearly every health status indicator assessed, disparities (both absolute and relative) were more pronounced for Maoris than for American Indians/Alaska Natives. Both indigenous populations suffered from disparities across a range of health indicators. However, no disparities were observed for American Indians/Alaska Natives in regard to immunization coverage. CONCLUSIONS: Ethnic health disparities appear to be more pronounced in New Zealand than in the United States. These disparities are not necessarily intractable. Although differences in national health sector responses exist, New Zealand may be well placed in the future to evaluate the effectiveness of new strategies to reduce these disparities given the extent and quality of Maori-specific health information available.

The cost effectiveness of universal antenatal screening for HIV in New Zealand.

OBJECTIVE: To model the incremental costs and benefits of a universal antenatal HIV screening programme in New Zealand (NZ). DESIGN: Cost effectiveness analysis, including only health service costs, using secondary data sources and expert opinion. Uncertainty assessed in multi-way sensitivity analyses. SETTING: The NZ Health Care System. SUBJECTS: Antenatal population of NZ. INTERVENTION: Universal antenatal HIV screening programme. MAIN OUTCOME MEASURES: Incremental cost per true-positive HIV case detected in mothers; incremental cost per HIV case avoided in babies; and incremental cost per discounted life-year gained, for mothers and babies, due to screening. RESULTS: Using base case values the application of universal screening would cost an additional $NZ 723 607 ($US 307 917) and would lead to the identification of an additional 6.25 true-positive women. After terminations have been excluded, the screening programme would detect five HIV exposed babies. There would be 1.15 avoided cases of HIV infection in babies and a net gain of 41.97 discounted life-years, for mothers and babies combined. The cost per incremental HIV-positive woman detected was $NZ 115 859 ($US 49 301), HIV infected baby avoided $NZ 629 669 ($US 267 944) and discounted life-year gained $NZ 17 241 ($US 7336). CONCLUSION: The discounted cost per life gained in NZ compares favourably to estimates reported in studies of similar interventions in other developed countries and other health care interventions in NZ. The decision of whether to implement universal screening in NZ would be clarified if the prevalence of antenatal HIV infection was known and policy makers identified their willingness to pay for an additional life-year gained.