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To compare the distribution of Māori and New Zealand (NZ) European populations in Aotearoa New Zealand by neighbourhood deprivation, for the five censuses between 1991 and 2013, and to identify changes in the distribution pattern over time.Geographical meshblock data from the 1991-2013 New Zealand censuses, by NZDep Index deprivation score, and by prioritised ethnic group population, were combined to analyse ethnic population counts by deprivation decile and deprivation score. Trends over time were analysed.Māori were over-represented in the more deprived NZDep deciles and under-represented in the least deprived deciles for all census periods. The NZ European population were over-represented in the least deprived deciles, and under-represented in the more deprived deciles. In each census, over 40% of the Māori population have been living in the two most deprived deciles, compared to less than 15% for NZ European.The patterns of inequity in socio-economic deprivation between Māori and NZ Europeans have remained virtually unchanged since 1991, despite various Government commitments to reduce inequity. Socio-economic deprivation for Māori is a key determinant of health inequity, and bolder Government measures prioritised for Māori are needed to change this socio-economic gradient if health equity goals are to be met.

Unnecessary treatment of asymptomatic bacteriuria is a concern. Hutt Valley District Health Board sought to reduce clinically inappropriate urine culture requests through removal of urine dipsticks from wards and education of staff using Choosing Wisely principles. The purpose of this research is to quantitatively evaluate the success of these initiatives.The numbers and results of urine cultures performed for Hutt Valley DHB were analysed, for the period from January 2015 to October 2017. Urinalyses were compared between those designated as 'inpatient' and those as 'outpatient', with the latter being the control of this study. The numbers of primary and secondary coded discharge diagnoses of UTIs were used as a measure of the negative impact of the interventions.There was a 28% reduction in monthly urine culture requests for inpatients, after staff education and removal of urine dipsticks, with no change in those for outpatients (the negative control). After the intervention, a higher proportion of urine cultures were positive for urinary pathogens (25.2% compared to 23.0%) and the average number of diagnoses of UTI in hospital discharges decreased 17% (from 161 to 134).The removal of urine dipsticks from wards and the education of staff significantly reduced the number of urine culture requests and is a useful strategy to reduce the overuse of antibiotics for asymptomatic bacteriuria without an increase in the number of UTIs. These simple interventions could be used at other hospitals as part of measures to reduce unnecessary care and overdiagnosis.

To evaluate the effectiveness of awareness-raising by the Choosing Wisely campaign in a New Zealand public hospital to reduce routine pre-operative testing and to determine what can be done to bring about change in clinician behaviour.Short, semi-structured, one on-one interviews were conducted with 15 doctors of varying seniority from general surgery who were exposed to the campaign between August and October 2018. The interviews covered four general topics including background information, asking about awareness and effectiveness of Choosing Wisely campaign, exploring barriers to changing clinician behaviour around pre-operative testing and exploring potential interventions which may be useful to change behaviour. Data were analysed using Braun and Clarke thematic analysis methodology.Four themes and 17 sub-themes emerged from the interviews. The main themes included awareness of Choosing Wisely, thoughts around pre-operative testing, barriers for changing clinician behaviour and strategies for reducing unnecessary pre-operative testing.The findings of this study suggest that a strategy that relies on revising guidelines and raising staff awareness alone is likely to be of limited effectiveness in reducing unnecessary pre-operative testing. In addition to increasing clinician awareness of evidence-based recommendations on unnecessary testing, other strategies may be needed to support behaviour change.