Tackling inequalities in obesity: a protocol for a systematic review of the effectiveness of public health interventions at reducing socioeconomic inequalities in obesity among adults.

BACKGROUND: Socioeconomic inequalities in obesity and associated risk factors for obesity are widening throughout developed countries worldwide. Tackling obesity is high on the public health agenda both in the United Kingdom and internationally. However, what works in terms of interventions that are able to reduce inequalities in obesity is lacking. METHODS/DESIGN: The review will examine public health interventions at the individual, community and societal level that might reduce inequalities in obesity among adults aged 18 years and over, in any setting and in any country. The following electronic databases will be searched: MEDLINE, EMBASE, CINAHL, PsycINFO, Social Science Citation Index, ASSIA, IBSS, Sociological Abstracts, and the NHS Economic Evaluation Database. Database searches will be supplemented with website and gray literature searches. No studies will be excluded based on language, country or publication date. Randomized and non-randomized controlled trials, prospective and retrospective cohort studies (with/without control groups) and prospective repeat cross-sectional studies (with/without control groups) that have a primary outcome that is a proxy for body fatness and have examined differential effects with regard to socioeconomic status (education, income, occupation, social class, deprivation, poverty) or where the intervention has been targeted specifically at disadvantaged groups or deprived areas will be included. Study inclusion, data extraction and quality appraisal will be conducted by two reviewers. Meta-analysis and narrative synthesis will be conducted. The main analysis will examine the effects of 1) individual, 2) community and 3) societal level public health interventions on socioeconomic inequalities in adult obesity. Interventions will be characterized by their level of action and their approach to tackling inequalities. Contextual information on how such public health interventions are organized, implemented and delivered will also be examined. DISCUSSION: The review will provide evidence, and reveal any gaps in the evidence base, of public health strategies which reduce and prevent inequalities in the prevalence of obesity in adults and provide information on the organization, implementation and delivery of such interventions. TRIAL REGISTRATION: PROSPERO registration number: CRD42013003612.

Defying the odds: a mixed-methods study of health resilience in deprived areas of England.

Previous studies have identified an area-level association between socio-economic deprivation and poorer population health. However, some recent studies have suggested that some areas exhibit better health outcomes than would be expected given their level of deprivation. This has been conceptualised in terms of 'health resilience'. This study is the first to explore area-level 'health resilience' at different geographical scales and by using mixed-methods. Regression Tree Classification was used to identify local areas (Local Authority Districts and Census Area Statistical Wards) in England that performed relatively well in terms of mortality (premature mortality 1998-2003) or morbidity (2001 Census measures of self-reported general and limiting long-term illness) despite experiencing long term deprivation (Townsend scores 1971-2001). Five Local Authority Districts (LADs) and 90 Census Area Statistical Wards (CASWARDS) exhibited 'health resilience' in terms of self-reported health, three LADs and 88 CASWARDS for limiting long-term illness, and three LADs and 62 CASWARDS for premature mortality. Potential mechanisms underpinning this resilience were explored using focus groups and in-depth interviews in one case study area in the North East of England. This suggested that for this case study area, place attachment, the natural environment and social capital may have played a role in mediating the detrimental health effects of long term deprivation. The study concludes by exploring the implications of these findings within the context of the study limitations and by outlining future avenues for research and policy.