Zealand Population Research Articles

Concordance of clinician, Chat-GPT4, and ORAD diagnoses against histopathology in Odontogenic Keratocysts and tumours: a 15-Year New Zealand retrospective study.

This research aimed to investigate the concordance between clinical impressions and histopathologic diagnoses made by clinicians and artificial intelligence tools for odontogenic keratocyst (OKC) and Odontogenic tumours (OT) in a New Zealand population from 2008 to 2023. Histopathological records from the Oral Pathology Centre, University of Otago (2008-2023) were examined to identify OKCs and OT. Specimen referral details, histopathologic reports, and clinician differential diagnoses, as well as those provided by ORAD and Chat-GPT4, were documented. Data were analyzed using SPSS, and concordance between provisional and histopathologic diagnoses was ascertained. Of the 34,225 biopsies, 302 and 321 samples were identified as OTs and OKCs. Concordance rates were 43.2% for clinicians, 45.6% for ORAD, and 41.4% for Chat-GPT4. Corresponding Kappa value against histological diagnosis were 0.23, 0.13 and 0.14. Surgeons achieved a higher concordance rate (47.7%) compared to non-surgeons (29.82%). Odds ratio of having concordant diagnosis using Chat-GPT4 and ORAD were between 1.4 and 2.8 (p < 0.05). ROC-AUC and PR-AUC were similar between the groups (Clinician 0.62/0.42, ORAD 0.58/0.28, Char-GPT4 0.63/0.37) for ameloblastoma and for OKC (Clinician 0.64/0.78, ORAD 0.66/0.77, Char-GPT4 0.60/0.71). Clinicians with surgical training achieved higher concordance rate when it comes to OT and OKC. Chat-GPT4 and Bayesian approach (ORAD) have shown potential in enhancing diagnostic capabilities.

Association of Past Smoking Status With Gout in Māori People in Aotearoa New Zealand.

Evidence for an association of smoking with gout is conflicting. We assessed associations of current and past smoking with gout in an Aotearoa New Zealand (NZ) population. Multivariable logistic regression analysis was performed on cross-sectional data from participants of NZ Māori (from 2 studies: Genetics of Gout in Aotearoa [GGA] study of 293 participants with gout and 431 without; and Ngāti Porou Hauora [NPH] study of 111 participants with gout and 42 without), Pacific people (257 participants with gout and 357 without), and European (694 participants with gout and 688 without) ancestry. Current smoking was not associated with gout in NZ Māori (GGA: adjusted odds ratio [aOR] 1.54, P = 0.13; NPH: aOR 3.02, P = 0.10), Pacific people (aOR 0.64, P = 0.21), or European (aOR 0.92, P = 0.80) cohorts. Ex-smoker status was associated with higher gout prevalence in Māori cohorts (GGA: aOR 1.71, P = 0.02; NPH: aOR 7.95, P < 0.001), but not in Pacific people (aOR 1.10, P = 0.69) or European (aOR 1.18, P = 0.22) cohorts. Associations were independent of age, sex, BMI, alcohol intake, kidney function, hypertension, diabetes, physical activity, sugary drink consumption, education, and employment. No association of smoker status with serum urate concentrations was observed in participants without gout. Ex-smoker status was associated with higher gout prevalence in people of NZ Māori ancestry. No association of current smoking with gout was observed across ancestral groups, raising uncertainties about the relevance of an association specific to ex-smokers.

A Mediterranean dietary pattern intervention does not improve cardiometabolic risk but does improve quality of life and body composition in an Aotearoa New Zealand population at increased cardiometabolic risk: A randomised controlled trial.

To test if a New Zealand food-based Mediterranean diet (NZMedDiet) with behavioural intervention improves cardiometabolic health and wellbeing. A randomised controlled trial comparing 12 weeks of the NZMedDiet to usual diet in participants with increased cardiometabolic risk (metabolic syndrome severity score [MetSSS] > 0.35). The intervention group was provided with food and recipes to meet 75% of their energy requirements, supported by a behavioural intervention to improve adherence. The primary outcome measure was (MetSSS) after 12 weeks. Two hundred individuals with mean (SD) age 49.9 (10.9) years of which 62% women were enrolled with their household/whānau. After 12 weeks, the mean (SD) MetSSS was 1.0 (0.7) in the control (n = 98) and 0.8 (0.5) in the intervention (n = 102) group; estimated difference (95% confidence interval [CI]) of -0.05 (-0.16 to 0.06), p = 0.35. The Mediterranean diet score (PyrMDS) was greater in the intervention group 1.6 (1.1-2.1), p < 0.001, consistent with a change to a more Mediterranean dietary pattern. Weight reduced in the NZMedDiet group compared with control (-1.9 kg [-2.0 to -0.34]), p = 0.006 and wellbeing, assessed by the SF-36 quality of life questionnaire, and improved across all domains. For example, the physical component summary score difference (95% CI) was 4.0 (2.4-5.7), p < 0.001, and the mental component summary score difference was 3.0 (0.7-5.2), p = 0.01. In participants with increased cardiometabolic risk, food provision with a Mediterranean dietary pattern and a behavioural intervention did not improve metabolic risk scores but was associated with reduced weight and improved quality of life.

Quality of Life Factors in Adults with Eosinophilic Oesophagitis in New Zealand.

Eosinophilic oesophagitis (EoE) is an immune-mediated oesophageal disorder causing dysphagia. Patients with EoE experience reduced QoL due to symptoms; however, this has not been assessed in the New Zealand population. The aim of this study was to assess QoL in patients with EoE in New Zealand. This observational study recruited participants from two New Zealand hospitals. Records were reviewed to confirm diagnoses, and consenting participants completed an electronic survey, consisting of the Dysphagia Symptom Questionnaire (DSQ) score and the QoL-specific EoE (EoE-QoL-A) questionnaire score. Correlation analysis examined the relationship between the DSQ and EoE-QoL-A scores. Differences in baseline variables were assessed. Univariate logistic regression assessed the association of variables with disease activity and QoL. Fifty-four participants responded, and four were excluded due to incomplete surveys. The majority (76%) were male, and the median age was 47 years (IQR 42-58). The median DSQ was 49 (IQR 0-60), and the median EoE-QoL-A score was 68 (IQR 48-80). A reduced EoE-QoL-A score was associated with active disease (OR = 0.96,95% CI 0.926-0.995). Significant associations were found between disease activity and overall EoE-QoL-A score (r = -0.37, p < 0.01) as well as the sub-categories eating and diet (r = -0.54, p < 0.001), social (r = 0.30, p < 0.05), and emotional impact (r = -0.44, p < 0.01). The EOE-QoL-A score was higher in those on PPI (75 vs. 60, p = 0.02). This study identified a decreased quality of life (QoL) in individuals with EoE in New Zealand, aligning with international literature. The increased DSQ scores suggest a possible gap in current management approaches. The correlation between the DSQ and QoL highlights the need for improved care models of care for EoE.

An anatomical analysis of liver volume and quality by ethnicity in a New Zealand population.

Post-hepatectomy liver failure is a major cause of mortality, where future liver remnant (FLR) is the key controllable factor. Recommended minimum FLR is influenced by quality of liver parenchyma. Historical research has often failed to include Māori and Pacific Island (PI) populations despite worse health outcomes. Liver analysis by ethnicity is one such example of this. The aims were to determine digital FLR for various anatomical hepatectomies, investigate any correlations between computed tomography (CT) hepatic textural analysis and body mass index (BMI); and assess the variance of these relationships for different ethnicities. One hundred and fifty-one patients who underwent abdominal CT scans at Burwood Hospital, Christchurch were retrospectively analysed. Māori and PI patients were selectively recruited to represent New Zealand's diversity. Liver volumetry, segmental ratio, and intra-hepatic fat deposits (IHFD) per ethnicity were examined. Median age of the cohort was 66 (19-95) and 75 (50%) were males. 68%, 23% and 9% patients identified as being European, Māori/PI and Asian, respectively. No statistically significant difference in volume or segment/total volume ratio were noted across different ethnicities. Obese patients had higher IHFD compared with overweight and normal BMI groups. When stratified across ethnic groups, higher IHFD were observed in Asian compared with Māori/PI populations, despite lower BMI. No significant variances in liver volumetry were found across different ethnic groups in New Zealand. However association between BMI and IHFD varied across different ethnic cohorts. Consequently, knowledge of liver volumetry is not enough; patient liver quality and ethnicity should considered for hepatic-surgery planning.

Quantifying age-specific household contacts in Aotearoa New Zealand for infectious disease modelling.

Accounting for population age structure and age-specific contact patterns is crucial for accurate modelling of human infectious disease dynamics and impact. A common approach is to use contact matrices, which estimate the number of contacts between individuals of different ages. These contact matrices are frequently based on data collected from populations with very different demographic and socio-economic characteristics from the population of interest. Here we use a comprehensive household composition dataset based on Aotearoa New Zealand census and administrative data to construct a household contact matrix and a synthetic population that can be used for modelling. We investigate the behaviour of a compartment-based and an agent-based epidemic model parametrized using these data, compared with a commonly used contact matrix that was constructed by projecting international data onto New Zealand's population. We find that using the New Zealand household data, either in a compartment-based model or in an agent-based model, leads to lower attack rates in older age groups compared with using the projected contact matrix. This difference becomes larger when household transmission is more dominant relative to non-household transmission. We provide electronic versions of the synthetic population and household contact matrix for other researchers to use in infectious disease models.

Prevalence of cardiomyopathy and cardiac mortality in a colony of non-purebred cats in New Zealand

ABSTRACT Aims To evaluate the prevalence of subclinical cardiomyopathy and cardiac mortality in a research colony of non-purebred cats, established as a model of the wider cat population in New Zealand. Methods All apparently healthy, compliant, non-pregnant, non-neonatal cats in the colony at the Centre for Feline Nutrition (Massey University, Palmerston North, NZ) underwent physical examination and echocardiography using a 4.4–6.2-MHz probe by a board-certified veterinary cardiologist. Cardiac phenotype was classified following current guidelines. Hypertrophic cardiomyopathy (HCM) phenotype was defined as an end-diastolic left ventricular wall thickness ≥ 6 mm. Colony mortality data from February 2012 to February 2022 was reviewed to determine cardiac mortality. Results Cats (n = 132; 65 females and 67 males) included in the study had a median age of 4.1 (IQR 3.0–8.0) years. Thirty-two (24%) cats had a heart murmur, and three (2%) cats had an arrhythmia. Echocardiography revealed heart disease in 24 (18.2%) cats, including 23 with an HCM phenotype and one with a restrictive cardiomyopathy phenotype. Of the cats with the HCM phenotype, 3/23 had systemic hypertension or hyperthyroidism or both, and these cats were excluded from the final diagnosis of HCM (20/132; 15.2 (95% CI = 9.5–22.4)%). Between 2012 and 2022, 168 colony cats died, with 132 undergoing post-mortem examination. Heart disease was considered the cause of death in 7/132 (5.3%; 95% CI = 2.2–10.6%) cats; five had HCM, one a congenital heart defect, and one myocarditis. The overall prevalence of death related to HCM in the colony during this period was 3.8% (95% CI = 1.2–8.6%). Three cats with HCM and the cat with a congenital heart defect died unexpectedly without prior clinical signs, while congestive heart failure was observed prior to death in two cats with HCM and the cat with myocarditis. Additionally, 30/132 (22.7%) cats had cardiac abnormalities but died for non-cardiac reasons. Conclusions Subclinical cardiomyopathy, specifically HCM, was common in cats in the colony. Given that the colony originated as a convenience selection of non-purebred cats in New Zealand, the true prevalence of HCM in the wider New Zealand population is likely to fall within the 95% CI (9.5–22%). The proportion of deaths of colony cats due to HCM was lower (3.8%) supporting the conclusion that subclinical cardiomyopathy may not progress to clinical disease causing death. Clinical relevance Veterinarians should be aware of the high prevalence of subclinical HCM when treating cats. Abbreviations CAM: Systolic anterior motion of the chordae tendineae; CFN: Centre for Feline Nutrition; HCM: Hypertrophic cardiomyopathy; LA/Ao: Left atrial to aortic ratio; LV FS: Left ventricular fractional shortening; LVIDd: Left ventricular internal diameters in end-diastole; LVIDs: Left ventricular internal diameter in end-systole; LVWT: Max Maximum left ventricular wall thickness; SAM: Systolic anterior motion of the mitral valve; 2D: Two-dimensional

Individual, household, and socio-economic predictors of COVID-19 testing and vaccination outcomes: a whole population linked data analysis

ObjectiveThe COVID-19 pandemic has exposed numerous social inequities in health outcomes across nations, despite early warnings of their potential. Poorer outcomes for ethnic minorities, and to a lesser extent Indigenous peoples, have been widely reported, and may be explained in part by household conditions and poorer socio-economic circumstances. This study aimed to identify the effects of diverse individual and social conditions on COVID-19 outcomes within the New Zealand population. MethodWe conducted a whole population analysis of the association between individual (e.g. ethnicity, disability status), household (e.g. household composition), and socio-economic (e.g. crowding, housing quality, income) factors and four COVID-19 health outcomes – infection, hospitalisation, mortality, and vaccination status. We constructed variables of interest from linked administrative data in New Zealand’s Integrated Data Infrastructure, and examined associations within the 2018 Census usually resident population (analysis Ns = 518,571 - 3,216,696). ResultsAnalyses showed that Māori (the Indigenous people of New Zealand) and Pacific peoples, an ethnic minority, experienced worse outcomes than other New Zealanders across all COVID-19 outcomes. These ethnic group differences were persistent, yet reduced, when accounting for household and socio-economic variables. Factors including disability status, high housing mobility, poor quality housing, and household crowding were also widely predictive of worse outcomes. ConclusionEthnic inequity in a range of COVID-19 outcomes is present in a country where the overall impacts of the pandemic were relatively limited. Individual, household, and socio-economic factors are associated with diverse COVID-19 outcomes, and policy amenable factors may help explain the presence of ethnic inequities.

New Zealanders living with a family member who has a long-term health condition: cross sectional analysis of integrated Census and administrative data

BackgroundLiving with a family member who has a long-term health condition (HC) is associated with poorer health and well-being outcomes, but the number and socio-demographics of people and families impacted by a family member who has an HC is unknown. MethodsUsing the Integrated Data Infrastructure (IDI), a collection of linked administrative datasets for the full New Zealand (NZ) population, we identified n= 1,043,172 families using 2013 NZ Census data, and used health data over the previous 5-years to ascertain whether people in these families (n=3,137,517) had cancer, chronic obstructive pulmonary disease, coronary health disease, diabetes, dementia, gout, stroke, traumatic brain injury (TBI) or a mental health/behavioural condition (MHBC). ResultsOver 60% of families included at least one person with a HC. The most common HCs were MHBCs (39.4% of families), diabetes (16.0%), and TBI (13.9%). A high proportion of multi-generation families (73.9%) included a member with a HC. Two-thirds (67.7%) of Pacific Peoples either had a HC themselves or were living with a family member who had a HC, compared with 62.3% of Europeans and 62.5% of Māori (the indigenous peoples of NZ). At the highest level of socioeconomic deprivation, 57.6% of children lived with a family member who had a HC. ConclusionsThree in five NZ families were living with a HC, with differences in the proportion affected according to family composition, socio-economic status and an individuals’ ethnicity. This suggests that there are a substantial number of people at risk of the associated poor outcomes.

The impact of social isolation and loneliness on the well-being of carers of a person with dementia in aotearoa New Zealand.

Dementia is a leading cause of disability, and as the population ages, there will be a greater need for friends and family to care for people with Dementia. Unfortunately, informal care for a person with dementia is associated with poor psychological and physical health and lower quality of life of the caregiver. The aim of the present study was to understand how to best support caregivers within their communities by examining their experience of loneliness, isolation, and their relationship with well-being. The study used a representative sample of the New Zealand population in terms of ethnicity, age, gender, education, and income and asked people if they were a primary caregiver of a person with Alzheimer's Disease or related disorder. Both loneliness and isolation were linked to overall well-being; however, loneliness was a stronger predictor of satisfaction with relationships and feeling part of one's community. The findings highlight the importance of examining the multi-factorial constructs of social connectedness and question research attributing loneliness solely to reduced social involvement. As such, interventions for caregivers of a person with dementia need to target feelings of loneliness as well as their social isolation.

Acute and persistent post-operative pain following mastectomy: a descriptive study in a tertiary hospital cohort.

Post mastectomy pain syndrome (PMPS) can have significant negative effects on patients' quality of life after mastectomy. The estimated prevalence of PMPS varies widely and there is little data from a New Zealand population. This limits clinicians' ability to meaningfully describe and discuss pain-related complications of mastectomy peri-operatively. We designed a single-centre, retrospective study to describe acute post-operative analgesic requirements after mastectomy, to describe the prevalence of PMPS at least 1 year after surgery, and to identify associated risk factors for this complication. One hundred and thirty mastectomy patients met inclusion criteria and 59 were willing and able to participate in 12-month follow-up. Acute post-operative pain was generally well managed with modest doses of oral analgesics. Sixty-six percent (n=39) of women reported some form of persistent pain symptoms post-mastectomy; this was associated with younger age, axillary surgery and chemotherapy. Only 5% of patients (n=3) met consensus criteria for PMPS, which limited identification of risk factors for this more severe complication. Despite PMPS occurring infrequently, post-operative pain of a less severe nature after mastectomy occurs commonly. Clinicians should remain vigilant to possible risk factors for this post-operative complication and counsel patients appropriately.

Gastrointestinal stromal tumours: incidence, recurrence and mortality. A decade of patients from a New Zealand tertiary surgical centre.

Gastrointestinal stromal tumours (GISTs) are the most common mesenchymal tumours of the gastrointestinal tract. The New Zealand (NZ) population incidence has not previously been documented nor has the potential effect of ethnicity been reviewed. We furthermore wanted to assess the difference between those undergoing a wedge resection versus a more extensive operation which we hypothesised would correlate with recurrence and mortality. All patients (n = 103) with a GIST diagnosed and treated at Te Whatu Ora Waitematā (Auckland, New Zealand) between 2012 and 2021 are presented. Patient demographics, method of GIST detection, management approach, index surgery, histological features, use of adjuvant and neoadjuvant imatinib, follow-up, recurrence and mortality rates were analysed. This paper reports the largest NZ GIST cohort to date and estimates an incidence of 17 cases per million per year. Eighty-four patients underwent surgical resection, 58 received a wedge resection and 17 received a more extensive operation. Five-year disease-free survival rates were 100% in the low/very low risk, 90% in the intermediate and 59% in the high risk groups as determined by the modified NIH criteria. Our overall 5-year GIST-specific survival rate was 83%; it was 91% in those who underwent a wedge resection and 60% in the extensive operation group. There is evidence that Māori have higher rates of GIST recurrence compared to non-Māori and are more likely to require an extensive surgical resection.

Diabetes treatment satisfaction among a multi-ethnic Aotearoa New Zealand population with uncontrolled type 2 diabetes mellitus.

To assess whether diabetes treatment satisfaction differs by ethnicity among participants with insufficient glycaemic control of type 2 diabetes mellitus in a clinical trial involving additional oral diabetes medications. Patient satisfaction is used as an indicator of healthcare quality. However, data on patients' diabetes treatment satisfaction in the context of insufficient glycaemic control is limited. Individuals with type 2 diabetes and an HbA1c of 58-110mmol/mol (7.5-12.5%) were recruited across Aotearoa New Zealand to participate in an 8-month randomised crossover study of vildagliptin and pioglitazone as add-on therapy to metformin and/or sulfonylurea. Participants completed the Diabetes Treatment Satisfaction Questionnaire (DTSQ) at baseline pre-randomisation. Treatment satisfaction scores were compared between ethnic groups and other characteristics using the analysis of variance and linear regression. Perceived hyper- and hypoglycaemia were summarised separately. Between February 2019 and March 2020, 346 participants (41% women, 32% Pacific peoples, 23% Māori, 26% European) completed the DTSQ. Mean (SD) age was 57.5 (10.9) years, diabetes duration was 9 (6.3) years and HbA1c was 75 (12)mmol/mol (9.0[3.2]%). At study entry, 40% were receiving monotherapy for diabetes. Treatment satisfaction was rated highly, with a score of 29(6) (interquartile range 25-33). Pacific peoples and older people reported greater treatment satisfaction than other groups (p<0.001). Diabetes treatment satisfaction was high, particularly among Pacific peoples, despite suboptimal glycaemic control and insufficient glucose-lowering therapy.

The effects of free prescriptions on community pharmacy selection: A discrete choice experiment

BackgroundLittle is known about preferences for community pharmacies, particularly the influence of prescription co-payments, and for New Zealand's priority populations, Māori and Pacific Peoples. Improving understanding of community pharmacy preferences will enable tailoring services to meet community needs. ObjectivesThis study aims to investigate New Zealanders’ preferences for community pharmacies when collecting prescriptions. Additionally, variations in preferences for community pharmacy attributes between different latent and demographic groups were examined. MethodsFocus group discussions with various community groups were thematically analyzed to develop six attributes: location, wait time, customer service, prescription co-payments, parking availability, and nearby businesses. Participants were asked to complete an online survey involving 12 choice tasks, where they had to choose their preferred option of 3 unlabeled pharmacies along with demographic questions. A mixed multinomial logit model and latent classes analysis were used to assess and compare the participant preferences. ResultsThe sample of 553 participants, representative of the New Zealand population, resulted in 19,908 observations for analysis. The most attractive pharmacy attribute was its proximity, being within a 10-min travel distance from home or work. The importance of prescription co-payments is evident, with free prescriptions being the second most attractive attribute level and $15 NZD prescription co-payments being the least appealing. Different classes placed importance on different attributes, the largest of which prioritized prescription co-payments. Including demographic characteristics did not improve model accuracy nor predict class membership. ConclusionsUnder current policy, the most effective way for pharmacies to attract business is by offering free prescriptions. However, the trend of adopting lower-cost models may reduce the quality of care they deliver. Policy decision-makers must decide if they are comfortable with this potential impact.

Defining Left Ventricular Geometry in a New Zealand Population

Defining Left Ventricular Geometry in a New Zealand Population

Update and projections for New Zealand's ophthalmology workforce.

The aim of this study was to update and project the growth of ophthalmologists in New Zealand. This will help decision makers better understand the current ophthalmologist workforce and make appropriate resource allocations. Supply and demographics of ophthalmologists in New Zealand were obtained from the Medical Council of New Zealand, Health Workforce New Zealand and Health New Zealand - Te Whatu Ora. Ophthalmology trainee numbers were extracted from the annual reports of the Royal Australian and New Zealand College of Ophthalmologists (RANZCO). New Zealand population statistics were extracted from the Stats NZ database. A simulation model was developed to project the growth of ophthalmologists from 2024 to 2050. In March 2023, there were 175 practising ophthalmologists in New Zealand. Overall, there were 34.0 ophthalmologists per million population, with 201.4 ophthalmologists per million for those aged ≥65 years. To maintain the current ratio, an additional 20 practising ophthalmologists are needed by 2050. The ratio of ophthalmologists per million population aged ≥65 years is projected to drop by 1.5% annually. To meet the demand of an increasing and ageing population, and RANZCO's goal of 40 ophthalmologists per million population, there needs to be an increase in ophthalmologist training positions from the current 5-year average of 6.6 to 11 new trainees annually, and a more effective distribution of the ophthalmologist workforce.

Changes in national identity across adulthood: A longitudinal analysis of cohort differences in Nationalism and Patriotism

Nationalism and patriotism are two interrelated, but separate, forms of national attachment that fulfill diverse psychological needs and are associated with distinct political and societal outcomes, particularly amid increasing immigration and diversity. However, little is known about how these two forms of national attachment change over time and/or throughout adulthood. The present study addresses this oversight by using cohort-sequential latent growth models across 13 annual waves of longitudinal data from a national sample of adults born in New Zealand (N = 50,305–50,408) to investigate changes in nationalism and patriotism across different birth cohorts. Results reveal that nationalism remained relatively unchanged until middle adulthood, after which it slightly increased. Conversely, patriotism appeared to increase weakly, albeit gradually, across the lifespan. Some evidence of cohort and period effects also emerged, pointing to subtle increases in patriotism and decreases in nationalism among the New Zealand population. These results are the first to demonstrate changes in nationalism and patriotism over an extended timeframe and across cohorts in a national sample.

Uveitis and Scleritis as a Risk Factor for Mortality

ABSTRACT Purpose Uveitis and scleritis may be caused by local or systemic infection, or associated with noninfectious systemic inflammatory autoimmune disease. This study explored the all-cause mortality following an individual’s first presentation with uveitis/scleritis. Methods A cross-sectional study was conducted on all uveitis/scleritis patients diagnosed by uveitis specialists and treated in a single tertiary referral center in New Zealand between 2006 and 2020(15y). Masquerade syndromes including intraocular lymphoma were excluded. Outcome measures: demographics, etiology of uveitis/scleritis, anatomical location and all-cause mortality. Results 2723 subjects were identified. Median age of onset of uveitis/scleritis was 44.9 years (Range:1.5–99.5 years). 49.6% were female. Median follow-up from diagnosis of uveitis/scleritis was 8.0 years (IQR 4.1–11.6 years) with a total follow-up of 24 443.3 subject-years. The most frequent diagnosis was idiopathic disease (30.9%), HLA-B27-positive uveitis (20.0%), and sarcoidosis (4.7%). Infectious etiologies (24.1%) were most commonly from herpes zoster virus (9.3%) and toxoplasmosis (4.3%). The age-adjusted mortality rate was higher in subjects with idiopathic disease, sarcoidosis, Fuchs’ uveitis syndrome, granulomatosis with polyangiitis/ANCA-associated vasculitis, toxoplasmosis, and herpes zoster virus, when compared to HLA-B27-positive uveitis. Hazard of mortality peaked in the first seven years following diagnosis, then subsequently declined. Patients with uveitis/scleritis had a significantly higher rate of mortality compared to the general New Zealand population (IRR 1.656 p = 0.017). Conclusion Infectious etiologies of uveitis/scleritis in this cohort were high when compared to other developed nations, attributable to data from a tertiary referral center treating inpatients. Potential shared inflammatory mechanisms in the eye and other organs can lead to concurrent non-ocular disease requiring systemic treatment, impacting an individual’s longevity.

A real-world study examining the impact of esketamine nasal spray in people living with major depressive disorder in Australia and New Zealand

IntroductionEsketamine has been approved in Australia and New Zealand as a third-line antidepressant treatment for treatment resistant depression. This study describes changes in quality of life, depressive symptoms and productivity in participants treated with esketamine in real-world settings. MethodsParticipants were recruited from an esketamine early access program and had not responded to two or more different antidepressants and not received neurostimulation for their current depressive episode. Participants received esketamine for 16 weeks or longer. Data collected included Assessment of Quality-of-Life scale (AQoL-8D), Hamilton Depression Rating Scale (HAM-D) and Work Productivity Activity Index (WPAI). ResultsParticipants (n = 105) had a mean age of 38.7 years (standard deviation (SD) = 14.6) and were predominantly female (59.0%). The mean duration of major depressive disorder was 7.2 years (SD = 4.2) and almost half of participants had been treated with 3–5 prior therapies. After 16-weeks on esketamine, participants showed improvement of greater than 10% across all dimensions of AQoL-8D, HAM-D scores decreased 8.0 points, and activity impairment decreased 20.4% as measured by WPAI. LimitationsThis was a non-randomized and unblinded study and may have selection and reporting bias. The population was not necessarily representative of the broader Australian and New Zealand population. It is not possible to determine if the results will be sustained or changed if participants received treatment for longer. ConclusionsEsketamine early access program participants, who were a real-world cohort with extensive prior treatment, showed clinically significant improvements in quality of life, depression severity and productivity after 16-weeks on treatment.

OUTCOMES OF REVISION TOTAL KNEE ARTHROPLASTY AFTER UNICOMPARTMENTAL KNEE ARTHROPLASTY AND PERIARTICULAR OSTEOTOMY

IntroductionThis study assessed outcomes of total knee joint replacements (TKJR) in patients who had undergone previous periarticular osteotomy compared with unicompartmental knee replacement (UKR). Establishing a difference in the results of total knee joint replacements following these operations may be an important consideration in the decision-making and patient counselling around osteotomy versus UKR for the management of single-compartment osteoarthritis.MethodUsing data from the New Zealand Joint Registry, we identified 1,895 total knee joint replacements with prior osteotomy and 1,391 with prior UKR. Revision rates and patient-reported outcomes, as measured by the Oxford Knee Score (OKS), between these two groups were compared. Adjusted hazard ratios were also calculated to compare the groups.ResultsThe revision rate for total knee joint replacement following osteotomy was significantly lower than TKJR following UKR (0.88 per 100 component years versus 1.38 per 100 component years, respectively). Adjusted hazard ratio calculations found that those with TKJR with prior UKR had more than double the risk of requiring revision than those with prior osteotomy. Additionally, there was a statistically significant difference in the mean adjusted OKS scores between the two groups, with improved outcomes in the group with prior osteotomy.ConclusionOur findings suggest that total knee joint replacement following periarticular osteotomy have a lower risk of revision and improved OKS when compared to those with prior UKR. Previous studies assessing New Zealand Joint Registry have not found a statistically significant difference between the two groups however, these results are no longer in keeping with more contemporary literature. Our study confirms the New Zealand population to be comparable with international studies with TKJR after osteotomy performing significantly better compared with prior UKR.