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Whānau Pakari is a family-centred healthy lifestyle programme for children/adolescents with overweight/obesity in New Zealand. This secondary analysis from our randomised trial within the clinical service assessed 5-year BMI changes in accompanying caregivers (n = 23), mostly mothers. Overall, baseline and 5-year caregivers' BMI were similar (32.50 vs 31.42 kg/m 2 , respectively; p = 0.31) but two-thirds (65%) experienced BMI reductions. Five-year BMI change was similar in High-intensity and Low-intensity randomisation groups [-1.37 kg/m 2 (-4.95, 2.21); p = 0.44]. Caregiver's BMI change was not associated with child's BMI change. Despite no overall BMI reduction, our findings contrast with upward BMI trajectories predicted for NZ adults with overweight/obesity., Competing Interests: Declaration of Competing Interest None., (Copyright © 2024. Published by Elsevier Ltd.)

Whānau Pakari is a healthy lifestyle assessment and intervention programme for children and adolescents with obesity in Taranaki (Aotearoa/New Zealand), which, in this region, replaced the nationally funded Green Prescription Active Families (GRxAF) programme. We compared national referral rates from the GRxAF programme (age 5-15 years) and the B4 School Check (B4SC, a national preschool health and development assessment) with referral rates in Taranaki from Whānau Pakari. We retrospectively analysed 5 years of clinical data (2010-2015), comparing referral rates before, during, and after the Whānau Pakari clinical trial, which was embedded within the programme. We also surveyed programme referrers and stakeholders about their experiences of Whānau Pakari, analysing their responses using a multiple-methods framework. After the Whānau Pakari trial commenced, Taranaki GRxAF referral rates increased markedly (2.3 pretrial to 7.2 per 1000 person-years), while NZ rates were largely unchanged (1.8-1.9 per 1000 person-years) ( p < 0.0001 for differences during the trial). Post-trial, Taranaki GRxAF referral rates remained higher irrespective of ethnicity, being 1.8 to 3.2 times the national rates ( p < 0.001). Taranaki B4SC referrals for obesity were nearly complete at 99% in the last trial year and 100% post-trial, compared with national rates threefold lower (31% and 32%, respectively; p < 0.0001), with Taranaki referral rates for extreme obesity sustained at 80% and exceeding national rates for both periods (58% and 62%, respectively; p < 0.01). Notably, a referral was 50% more likely for referrers who attended a Whānau Pakari training half-day (RR = 1.51; p = 0.009). Stakeholders credited the success of Whānau Pakari to its multidisciplinary team, family-centred approach, and home-based assessments. However, they highlighted challenges such as navigating multidisciplinary collaboration, engaging with families with complex needs, and shifting conventional healthcare practices. Given its favourable referral trends and stakeholder endorsement, Whānau Pakari appears to be a viable contemporary model for an accessible and culturally appropriate intervention on a national and potentially international scale.

Introduction: The usual output following health consultations from paediatric services is a clinical letter to the referring professional or primary care provider, with a copy sent to the patient's caregiver. There is little research on how patients and caregivers perceive the letter content. We aimed to: first understand child, young people and caregiver experiences of and preferences for receiving a health feedback letter about the child/young person's health measures within a healthy lifestyle programme; and second to provide a set of recommendations for designing letters to children, young people and their families within a healthy lifestyle programme., Methods: This qualitative study, informed by Kaupapa Māori principles, included focus groups of children aged 5-11 years and young people aged 12-18 years who were participants in a healthy lifestyle programme in Taranaki, Aotearoa New Zealand and of their respective caregivers (total n = 47). Discussions were audio-recorded, transcribed and analysed using thematic analysis., Findings: Key themes were identified: letters sometimes acted as 'discourses of disempowerment'-some participants experienced a lack of safety, depersonalisation with medical jargon and 'feeling like a number'. Participants described the need for acknowledgement and affirmation in written communication-health feedback should include validation, choice regarding content, respectful tone and a strengths-based approach to health messages., Interpretation: Letters to referrers, copied to families, can be perceived as disempowering, and participant and caregiver perspectives of content should be considered. This study challenges conventional practice in communicating health feedback with broader implications for written communication in healthcare. We propose separate letters aimed at the child/young person and their caregiver that offer choice in the information they receive. The administrative burden of multiple letters can be mitigated by advances in digital health., Patient Contribution: This study originated in response to feedback from service users that current health feedback was not meeting their needs or expectations. Patient perspectives, especially from children, are rarely considered in the generation of clinic letters from health professionals. Participants were child participants in the community-based clinical service and their caregivers, and care was taken to represent the demographic backgrounds of service users. Collection and interpretation of Māori data were led by researchers who were local community members to ensure prioritisation and preservation of participant voice. Where possible, results are illustrated in the text by direct quotes from participants, whose identities are protected with a pseudonym., (© 2024 The Authors. Health Expectations published by John Wiley & Sons Ltd.)

While there is potential for societal benefit from linkage and integration of large datasets, there are gaps in our understanding of the implications for children and young people, and limited inclusion of their views within this discourse. We aimed to understand the views and expectations of children, young people and their parents/caregivers in Aotearoa New Zealand regarding child health data storage, linkage and consent for use. This qualitative study included 24 Māori and non-Māori children, young people and their families across five focus groups, recruited from a community-based health service. A mixed Māori and non-Māori research team facilitated participant recruitment and data collection. Child, adolescent and parent/caregiver groups were held separately. Sessions were audio-recorded and the verbatim transcripts were analysed thematically. We identified three themes: (i) I am more than a number: seeing patients as people; (ii) In safe hands: data as power; and (iii) What are your intentions with my data? Consent as an active relationship. A key challenge was the reductive and stigmatizing potential of data integration for minoritised groups. Hypothetical discussions of data sharing and linkage were contingent on trust between the participant and the health professional, with negotiated data ownership. Consent was conceived as an active relationship needing renewal and renegotiation as children reached adulthood. Current consent processes for ongoing use of child data require further deliberation. Without a strong ethical and child rights-based approach to issues of child health data management, consent and linkage, we risk exacerbating health inequities and experiences of breach of trust., (© The Author(s) 2023. Published by Oxford University Press.)

This commentary examines the ethical significance of recently published research demonstrating the extent to which healthcare workers experienced stress and increased challenges in the workplace due to inadequate access to personal protective equipment (PPE) during the first COVID-19 surge in Aotearoa New Zealand. The inadequate state of New Zealand's PPE stockpile and distribution system at the beginning of the pandemic was a critical signal, a "canary in the coalmine", of broader challenges facing the New Zealand healthcare system, particularly for healthcare worker safety and wellbeing. As New Zealand reforms its health system with the aim of improving access to and equity of care, an opportunity exists to apply critical lessons learnt from the COVID-19 pandemic about the need to prioritise the wellbeing of the healthcare workers we are dependent upon to deliver that care. Failure to apply this new knowledge will see the system similarly unprepared for future public health emergencies, which are likely to be imminent, and potentially with healthcare workers less willing to accept the burdens placed on them. The Nurture Framework, which has emerged from the voices of healthcare workers within this research, should be adopted as part of health reforms and ongoing emergency preparedness planning. Trust, transparency, respect and safety, the four values of the Framework, are fundamental for all workers who contribute their skills, knowledge and time to our healthcare organisations., Competing Interests: Nil., (© PMA.)

The Libyan Ministry of Health is keen to understand how it can introduce policies to protect its population from non-communicable diseases (NCDs). We aimed to perform an implementation research assessment of the current situation, including challenges and opportunities. We used an explanatory sequential mixed methods design. We started with a quantitative assessment of NCD policy performance based on review of the WHO NCD Progress Monitor Reports. Once we had identified Libya's NCD policy gaps we performed a systematic review to identify international lessons around barriers and successful strategies for the policies Libya has not yet implemented. Finally, we performed a series of key stakeholder interviews with senior policymakers to explore their perspectives around promising policy actions. We used a realist paradigm, methods triangulation, and a joint display to synthesise the interpretation of our findings and develop recommendations. Libya has not fully implemented any of the recommended policies for diet, physical activity, primary care guidelines & therapeutics, or data collection, targets & surveillance. It does not have robust tobacco policies in place. Evidence from the international literature and policymaker interviews emphasised the centrality of according strong political leadership, governance structures, multisectoral engagement, and adequate financing to policy development activities. Libya's complex political and security situation are major barriers for policy implementation. Whilst some policies will be very challenging to develop and deploy, there are a number of simple policy actions that could be implemented with minimum effort; from inviting WHO to conduct a second STEPS survey, to signing the international code on breast-milk substitutes. Like many other fragile and conflict-affected states, Libya has not accorded NCDs the policy attention they demand. Whilst strong high-level leadership is the ultimate key to providing adequate protections, there are a range of simple measures that can be implemented with relative ease., Competing Interests: I have read the journal’s policy and the authors of this manuscript have the following competing interests: Mohamed Aghilla and Haider M El Saeh hold senior positions in the Libyan National Centre for Disease Control, (Copyright: © 2022 Allen et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.)

Objective: To determine the impact of a family-based assessment-and-intervention healthy lifestyle programme on health knowledge and beliefs of children and families affected by obesity. Second, to compare the health knowledge of the programme cohort to those of a national cohort in Aotearoa/New Zealand (NZ). Design: This mixed-methods study collected health knowledge and health belief data in a questionnaire at baseline and 12-, 24-, and 60-month follow-up assessments. Health knowledge over time was compared with baseline knowledge and with data from a nationally representative survey. A data-driven subsumption approach was used to analyse open-text responses to health belief questions across the study period. Setting: Taranaki region, a mixed urban−rural setting in NZ. Participants: Participants (caregiver/child dyads) from the Whānau Pakari randomised trial. Results: A greater proportion of the cohort correctly categorised foods and drinks as healthy or unhealthy at 12 months compared to baseline for most questionnaire items. Retention of this health knowledge was evident at 24- and 60-month follow-ups. More than twice as many participants correctly reported physical activity recommendations at follow-up compared to baseline (p < 0.001). Health knowledge of participants was similar to the national survey cohort at baseline, but surpassed it at 12 and 24 months. Participant beliefs around healthy lifestyles related to physical functioning, mental and emotional wellbeing, and enhancement of appearance, and gained greater depth and detail over time. Conclusions: This study demonstrates the important role that community-level healthy lifestyle programmes can have in knowledge-sharing and health promotion.

Objectives: Safety and welfare are critical as pandemic-related demands on the healthcare workforce continue. Access to personal protective equipment (PPE) has been a central concern of healthcare workers throughout the COVID-19 pandemic. Against the backdrop of an already strained healthcare system, our study aimed to explore the experiences of healthcare workers with PPE during the first COVID-19 surge (February-June 2020) in Aotearoa/New Zealand (NZ). We also aimed to use these findings to present a strengths-based framework for supporting healthcare workers moving forward., Design: Web-based, anonymous survey including qualitative open-text questions. Questions were both closed and open text, and recruitment was multimodal. We undertook inductive thematic analysis of the dataset as a whole to explore prominent values related to healthcare workers' experiences., Setting: October-November 2020 in New Zealand., Participants: 1411 healthcare workers who used PPE during surge one of the COVID-19 pandemic., Results: We identified four interactive values as central to healthcare workers' experiences: transparency, trust, safety and respect. When healthcare workers cited positive experiences, trust and safety were perceived as present, with a sense of inclusion in the process of stock allocation and effective communication with managers. When trust was low, with concerns over personal safety, poor communication and lack of transparency resulted in perceived lack of respect and distress among respondents. Our proposed framework presents key recommendations to support the health workforce in terms of communication relating to PPE supply and distribution built on those four values., Conclusions: Healthcare worker experiences with PPE access has been likened to 'the canary in the coalmine' for existing health system challenges that have been exacerbated during the COVID-19 pandemic. The four key values identified could be used to improve healthcare worker experience in the future., Competing Interests: Competing interests: None declared., (© Author(s) (or their employer(s)) 2022. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.)

Competing Interests: Competing interests: MA and HE work at the Libyan Centre for Disease Control.

The objective of this study was to understand how participants referred to a childhood obesity intervention programme prefer to receive health information, and secondly, to determine acceptability of digital technologies such as a social media platform or IT application for programme engagement. This study includes a subset of interviews (n = 64) of a wider study of the barriers and facilitators of engagement in a multidisciplinary healthy lifestyle programme for childhood obesity, based in Taranaki, Aotearoa/New Zealand. The topics of health information and social media and/or app use were covered in 53 and 30 interviews, respectively. Participants were parents and caregivers of children and adolescents referred to the programme, and interviews were mostly conducted in family homes. Findings showed that participants consulted a range of people, places and resources for information about their health, notably the internet, health professionals, and family and friends. Participants reported using the internet to complement or supplement information from health professionals. A strong relationship with health professionals built on trust was important. Use of digital technologies such as an IT application or social media platform for engagement with the programme was generally acceptable, with the caveat that this did not replace face-to-face communication with their primary care provider. In conclusion, the high usage of digital sources of health information requires accurate and reliable information. Digital technologies such as IT applications or social media platforms may have a role in terms of supplementing the patient journey; however, the importance of in-person communication and an ongoing relationship with a health professional or practice remains paramount., (© 2022 The Authors. Health and Social Care in the Community published by John Wiley & Sons Ltd.)

The COVID-19 pandemic has required novel solutions, including heat disinfection of personal protective equipment (PPE) for potential reuse to ensure availability for healthcare and other frontline workers. Understanding the efficacy of such methods on pathogens other than SARS-CoV-2 that may be present on PPE in healthcare settings is key to worker safety, as some pathogenic bacteria are more heat resistant than SARS-CoV-2. We assessed the efficacy of dry heat treatment against Clostridioides difficile spores and Mycobacterium tuberculosis (M. tb) on filtering facepiece respirator (FFR) coupons in two inoculums. Soil load (mimicking respiratory secretions) and deionized water was used for C. difficile, whereas, soil load and PBS and Tween mixture was used for M. tb. Dry heat treatment at 85 °C for 240 min resulted in a reduction equivalent to 6.0-log10 CFU and 7.3-log10 CFU in C. difficile spores inoculated in soil load and deionized water, respectively. Conversely, treatment at 75 °C for 240 min led to 4.6-log10 CFU reductions in both soil load and deionized water. C. difficile inactivation was higher by >1.5-log10 CFU in deionized water as compared to soil load (p < 0.0001), indicating the latter has a protective effect on bacterial spore inactivation at 85 °C. For M. tb, heat treatment at 75 °C for 90 min and 85 °C for 30 min led to 8-log10 reduction with or without soil load. Heat treatment near the estimated maximal operating temperatures of FFR materials (which would readily eliminate SARS-CoV-2) did not achieve complete inactivation of C. difficile spores but was successful against M. tb. The clinical relevance of surviving C. difficile spores when subjected to heat treatment remains unclear. Given this, any disinfection method of PPE for potential reuse must ensure the discarding of any PPE, potentially contaminated with C. difficile spores, to ensure the safety of healthcare workers.

There have been widespread issues with the supply and distribution of personal protective equipment (PPE) globally throughout the COVID-19 pandemic, raising considerable public concern. We aimed to understand the experiences of healthcare workers using PPE during the first COVID-19 surge (February-June 2020) in Aotearoa/New Zealand (NZ). This study consisted of an online, voluntary, and anonymous survey, distributed nationwide via multimodal recruitment. Reported domains included PPE supply, sourcing and procurement, fit-testing and fit-checking, perceived protection, trust and confidence in the workplace, mental health, and the likelihood of remaining in the profession. Differences according to demographic variables (e.g., profession and workplace) were examined. We undertook a descriptive analysis of responses to open-text questions to provide explanation and context to the quantitative data. The survey was completed in October-November 2020 by 1411 healthcare workers. Reported PPE shortages were common (26.8%) among healthcare workers during surge one in NZ. This led to respondents personally saving both new (31.2%) and used (25.2%) PPE, purchasing their own PPE (28.2%), and engaging in extended wear practices. More respondents in the public system reported being told not to wear PPE by their organisation compared with respondents in the private sector. Relatively low numbers of respondents who were required to undertake aerosol-generating procedures reported being fit-tested annually (3.8%), a legal requirement in NZ. Healthcare workers in NZ reported a concerning level of unsafe PPE practices during surge one, as well as a high prevalence of reported mental health concerns. As NZ and other countries transition from COVID-19 elimination to suppression strategies, healthcare worker safety should be paramount, with clear communication regarding PPE use and supply being a key priority.

The arrival of SARS-CoV-2 to Aotearoa/New Zealand in February 2020 triggered a massive response at multiple levels. Procurement and sustainability of medical supplies to hospitals and clinics during the then upcoming COVID-19 pandemic was one of the top priorities. Continuing access to new personal protective equipment (PPE) was not guaranteed; thus, disinfecting and reusing PPE was considered as a potential alternative. Here, we describe part of a local program intended to test and implement a system to disinfect PPE for potential reuse in New Zealand. We used filtering facepiece respirator (FFR) coupons inoculated with SARS-CoV-2 or clinically relevant multidrug-resistant pathogens ( Acinetobacter baumannii Ab5075, methicillin-resistant Staphylococcus aureus USA300 LAC and cystic-fibrosis isolate Pseudomonas aeruginosa LESB58), to evaluate the potential use of ultraviolet-C germicidal irradiation (UV-C) or dry heat treatment to disinfect PPE. An applied UV-C dose of 1000 mJ/cm 2 was sufficient to completely inactivate high doses of SARS-CoV-2; however, irregularities in the FFR coupons hindered the efficacy of UV-C to fully inactivate the virus, even at higher UV-C doses (2000 mJ/cm 2 ). Conversely, incubating contaminated FFR coupons at 65 °C for 30 min or 70 °C for 15 min, was sufficient to block SARS-CoV-2 replication, even in the presence of mucin or a soil load (mimicking salivary or respiratory secretions, respectively). Dry heat (90 min at 75 °C to 80 °C) effectively killed 10 6 planktonic bacteria; however, even extending the incubation time up to two hours at 80 °C did not completely kill bacteria when grown in colony biofilms. Importantly, we also showed that FFR material can harbor replication-competent SARS-CoV-2 for up to 35 days at room temperature in the presence of a soil load. We are currently using these findings to optimize and establish a robust process for decontaminating, reusing, and reducing wastage of PPE in New Zealand.

Objective: This study aimed to determine 5-year outcomes from a 12-month, family-based, multidisciplinary lifestyle intervention program for children., Methods: This study was the 5-year follow-up of a randomized clinical trial comparing a low-intensity control group (home-based assessments) with a high-intensity intervention group (assessments plus weekly sessions) in New Zealand. Participants were aged 5 to 16 years with BMI ≥ 98th centile or > 91st centile with weight-related comorbidities. The primary outcome was BMI standard deviation score (BMISDS). Secondary outcomes included various health markers., Results: Of the 199 children included in the study at baseline (47% who identified as Māori, 53% who identified as female, 28% in the most deprived quintile, mean age = 10.7 years, mean BMISDS = 3.12), 86 completed a 5-year assessment (43%). BMISDS reduction at 12 months was not retained (control = 0.00 [95% CI: -0.22 to 0.21] and intervention = 0.17 [95% CI: -0.01 to 0.34]; p = 0.221) but was greater in participants aged <10 years versus >10 years at baseline (-0.15 [95% CI: -0.33 to 0.03] vs. 0.21 [95% CI: 0.03 to 0.40]; p = 0.008). BMISDS trajectory favored participants with high attendance (p = 0.013). There were persistent improvements in water intake and health-related quality of life in both groups as well as reduced sweet drink intake in the intervention group., Conclusions: This intervention, with high engagement from those most affected by obesity, did not achieve long-term efficacy of the primary outcome. Attendance and age remain important considerations for future interventions to achieve long-term BMISDS reduction., (© 2021 The Obesity Society.)

We describe the approach of an Indigenous-non-Indigenous research partnership in the context of a qualitative study which aimed to understand barriers and facilitators to engagement in a community-based healthy lifestyles program in Aotearoa/New Zealand. Informed by Kaupapa Māori research principles and by "Community-Up" research values, this collaborative approach between the mixed Māori-non-Māori research team effectively engaged with Māori and non-Māori families for in-depth interviews on participant experience, including with non-service users. "Community-Up" research principles allowed for a respectful process which upheld the mana (status, dignity) of the interview participants and the research team. Challenges included maintaining flexibility in our conceptions of ethnicity to reflect the complexity of modern family life in Aotearoa/New Zealand. We were committed to ongoing communication, awareness, and attention to the relationships that formed the basis of our research partnership, which allowed effective navigation of challenges and was critical to the study's success.

Objective: Child and adolescent obesity continues to be a major health issue internationally. This study aims to understand the views and experiences of caregivers and participants in a child and adolescent multidisciplinary programme for healthy lifestyle change., Design: Qualitative focus group study., Setting: Community-based healthy lifestyle intervention programme in a mixed urban-rural region of Aotearoa/New Zealand., Participants: Parents/caregivers (n=6) and children/adolescents (n=8) who participated in at least 6 months of an assessment and weekly session, family-based community intervention programme for children and adolescents affected by obesity., Results: Findings covered participant experiences, healthy lifestyle changes due to participating in the programme, the delivery team, barriers to engagement and improvements. Across these domains, four key themes emerged from the focus groups for participants and their caregivers relating to their experience: knowledge-sharing, enabling a family to become self-determining in their process to achieve healthy lifestyle change; the importance of connectedness and a family-based programme; the sense of a collective journey and the importance of a nonjudgemental, respectful welcoming environment. Logistical challenges and recommendations for improvement were also identified., Conclusions: Policymakers need to consider the experiences of participants alongside quantitative outcomes when informing multidisciplinary intervention programmes for children and adolescents affected by obesity. Trial registration number Australian New Zealand Clinical Trials Registry (ANZCTR):12611000862943; Post-results., Competing Interests: Competing interests: None declared., (© Author(s) (or their employer(s)) 2021. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.)

Objective: To determine whether 12-month BMI SDS reductions persisted at 24 months in a multi-disciplinary assessment and intervention program for children and adolescents with obesity, and whether secondary outcomes improved., Methods: This was a community-based 12-month RCT in Aotearoa/New Zealand. Eligible participants were aged 5 to 16 years with BMI ≥98th centile or BMI >91st centile with weight-related comorbidities. The low-intensity control received comprehensive home-based baseline assessments and advice, and 6-monthly follow-up. The high-intensity intervention received the same assessments and advice, but also weekly multidisciplinary sessions. Primary outcome was BMI SDS at 12 months. Secondary outcomes included cardiovascular and metabolic markers., Results: 121 participants (60% of participants at baseline) were assessed at 24 months. BMI SDS reduction at 12 months was lost at 24 months in the modified intention-to-treat analysis [Control -0.03 (95%CI -0.14, 0.09) and Intervention -0.02 (-0.12, 0.08); P = .93]. However, sweet drink intake was reduced, water intake increased, and there were improvements in cardiovascular fitness in the high-intensity intervention. ≥70% attendance in the high-intensity intervention resulted in a persistent BMI SDS reduction of -0.22 after 24 months (95%CI -0.38, -0.06)., Conclusions: This trial was negative in terms of primary outcome at 24 months. However, high engagement led to sustained treatment effect, and there were multiple improvements in health measures., (© 2020 World Obesity Federation.)

Objective: To understand facilitators and barriers to engagement in a multidisciplinary assessment and intervention program for children and adolescents with obesity, particularly for Māori, the Indigenous people of New Zealand., Methods: Whānau Pakari participants and caregivers (n = 71, 21% response rate) referred to the family-based healthy lifestyles program in Taranaki, New Zealand, were asked to participate in a confidential survey, which collected self-reported attendance levels and agreement with statements around service accessibility and appropriateness and open-text comments identifying barriers and facilitators to attendance., Results: Self-reported attendance levels were higher when respondents reported sessions to be conveniently located (P = .03) and lower when respondents considered other priorities as more important for their family (P = .02). Māori more frequently reported that past experiences of health care influenced their decision to attend (P = .03). Facilitators included perceived convenience of the program, parental motivation to improve child health, and ongoing support from the program., Conclusions and Implications: Program convenience and parental and/or self-motivation to improve health were facilitators of attendance. Further research is required to understand the relationship between past experiences with health care and subsequent engagement with services., (Copyright © 2019 The Authors. Published by Elsevier Inc. All rights reserved.)

Objectives: It is unclear whether an association exists between obesity in children/adolescents and cognitive function, and whether the latter can be altered by body mass index (BMI) standard deviation score (SDS) reductions. We aimed to determine whether an association exists between BMI SDS and cognitive function in children/adolescents with obesity engaged in an obesity intervention. Second, we sought to determine if BMI SDS reduction at 12 months was associated with improved cognitive function., Design: Secondary analysis of a clinical trial., Participants: Participants (n=69) were recruited from an obesity intervention. Eligible participants (recruited June 2013 to June 2015) were aged 6-16 years, with a BMI ≥98th centile or BMI >91st centile with weight-related comorbidities., Outcome Measures: Primary outcome measure was change in BMI SDS from baseline at 12 months. Dependent variables of cognitive functioning and school achievement were assessed at baseline and 12 months, using dependent variables of cognitive functioning (elements of Ravens Standard Progressive Matrices, Wide Range Achievement Test-fourth edition and Wechsler Intelligence Scale for Children-fourth edition)., Results: At baseline, BMI SDS was not associated with all aspects of cognitive function tested (n=69). Reductions in BMI SDS over time did not alter cognitive function overall. However, there was a greater reduction in comprehension standard scores in participants who increased their BMI SDS (adjusted estimated difference -6.1, 95% CI -11.6 to -0.6; p=0.03)., Conclusions: There were no observed associations between BMI SDS and cognitive function in participants, apart from comprehension in the exploratory analyses, which may have been a random finding. Further studies need to include larger longitudinal cohorts incorporating a wider BMI range at entry to determine whether our findings persist., Trial Registration Number: ANZCTR12611000862943; Pre-results., Competing Interests: Competing interests: YCA and PLH have been recipients of these grants to undertake clinical research in relation to Whānau Pakari, YCA has been paid in a fellowship capacity from the Health Research Council of New Zealand, TLC and CEKW have been paid as research assistants, JGBD has been paid for data analysis., (© Author(s) (or their employer(s)) 2019. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.)