Rationale and methods for a cross-sectional study of mental health and wellbeing following river flooding in rural Australia, using a community-academic partnership approach.

BACKGROUND: Climate change is associated with greater frequency, duration, intensity and unpredictability of certain weather-related events, including floods. Floods harm mental health. There is limited understanding of the mental health and well-being effects from river flooding, particularly over the longer term and in rural contexts. This paper describes the rationale, aims, objectives, study design and socio-demographic characteristics of the sample for a study measuring associations between flood experience and mental health and wellbeing of residents (particularly those most likely to be negatively impacted and hard to reach) in rural NSW Australia 6 months following a devastating flood in 2017. To our knowledge, the study is the first of its kind within Australia in a rural community and is an important initiative given the likelihood of an increasing frequency of severe flooding in Australia given climate change. METHODS: A conceptual framework (The Flood Impact Framework) drawing on social ecological approaches was developed by the research team. It was based on the literature and feedback from the community. The Framework describes putative relationships between flood exposure and mental health and wellbeing outcomes. Within a community-academic partnership approach, a cross-sectional survey was then undertaken to quantify and further explore these relationships. RESULTS: The cross-sectional survey was conducted online (including on mobile phone) and on paper between September and November 2017 and recruited 2530 respondents. Of those, 2180 provided complete demographic data, among whom 69% were women, 91% were aged 25-74, 4% identified as Aboriginal and/or Torres Strait Islander, 9% were farmers and 33% were business owners. CONCLUSIONS: The study recruited a wide range of respondents and the partnership facilitated the community's engagement with the design and implementation of the study. The study will provide a basis for a follow-up study, that will aim to improve the understanding of mental health and wellbeing effects over the longer term. It will provide an important and original contribution to understanding river flooding and mental health in rural Australia, a topic that will grow in importance in the context of human-induced climate change, and identify critical opportunities to strengthen services, emergency planning and resilience to future flooding.

Ventilatory standards for clinically well aboriginal adults.

OBJECTIVE: To obtain reference standards for ventilatory function of clinically well Australian Aboriginal adults. DESIGN: A cross-sectional assessment of the population of a North Queensland Aboriginal community. SETTING: A specialist clinical and public health service. The measurements were made with the cooperation of the local primary health care centre. PARTICIPANTS: The 288 study subjects included over 70% of Aboriginal adults residing in an isolated Cape York community. Those with known respiratory disease, abnormal chest x-ray findings, positive loose cough sign, abnormal lung signs or inability to perform the ventilatory tests satisfactorily were excluded; 229 persons (80%) remained for analysis. Smoking was prevalent in both men (85%) and women (76%). As in most other studies producing reference values for lung function, smokers were not excluded. MAIN OUTCOME MEASURES: Age, standing height in bare feet and sitting height were recorded. Ventilatory measurements included forced expiratory volume in one second (FEV1), forced vital capacity (FVC) and maximum mid-expiratory flow (MMEF) which is also known as the forced expiratory flow (FEF 25%-75%). RESULTS: Standing height, age and sex were the major determinants of ventilatory function. Sitting height was not a good predictor. Ventilatory values differed significantly from those expected for Europeans: Aboriginal lung volumes were much smaller (by about 25%) and fell much faster with age. The age-related decrease in lung function was less in smokers. CONCLUSION: The smoking effect may reflect the operation of differential survival or other selective factors and has been noted in some other ethnic groups. Although previous studies have yielded some ventilatory function data on Aborigines, we report the first population-based reference values expected for clinically well adults. The information will be useful to clinicians and public health workers.