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Synthesising Perspectives: Case Studies for Action. Session outcomes . Understand the strengths and weakness of Dahlgren and Whitehead model of determinants of health Understand how different strategies can be used to tackle health problems by focusing on case studies.
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Session outcomes • Understand the strengths and weakness of Dahlgren and Whitehead model of determinants of health • Understand how different strategies can be used to tackle health problems by focusing on case studies
Key strengths of the rainbow model • Relatively simple to conceptualise • Demonstrates the interconnectness of the layers in shaping health • Demonstrates how individual choice is a relatively small determinant of health • Provides a tool to examines complex causal pathways and how they may determine health inequity • Acknowledges the necessity for multi-layer action to address health
Case study Malaria basics and context • Globally malaria causes an estimated two million deaths and 300 million diagnoses annually (Walley, Webber & Collins, 2010). • There are four types of malaria which can infect humans and the potentially most deadly of these is Plasmodium Falciparum which is carried by a mosquito vector. • Being bitten by an infected mosquito can cause the transmission of the parasite from the saliva glands of the mosquito to the human bloodstream. • The liver where multiplication of the parasites takes place. These are released into the bloodstream and produce toxins which cause the physical symptoms of infection – high temperature, headaches and pain (Walley, Webber & Collins, 2010).
Addressing malaria • Primary prevention approaches Development of vaccinations to protect against exposure of Plasmodium sp. Spraying of households and environments to destroy mosquitos to prevent transmission of Plasmodium sp. Use of insecticides and covering skins to avoid being bitten by mosquitos
Addressing malaria • Lifestyle and behavioural approaches Compliance and adherence to preventative behaviours such as using insecticide treated nets (ITNs) Understanding the nature of transmission of malaria and its associated vector. Lay beliefs about the causes and prevention startegies of malaria are important in shaping behaviour.
Addressing malaria • Changing the social and economic environment Subsidising or providing free ITNs Removing stagnant pools of water near dwellings would prevent reproduction of mosquitos which need water to breed.
Addressing malaria • Policy initiatives Eradication of malaria requires political will to reduce the poor socio-economic circumstances in which people live. For improved access and usage of ITNs political action is required. Action on climate change is needed to prevent wider distribution of infected mosquitos to more temperate areas of the world.
Case study cervical cancer • Approximately half a million women develop cervical cancer every year, and almost half of those diagnosed die as a result (WHO 2010b). • Cervical cancer accounts for 1 in 10 cancers diagnosed in women worldwide (Cancer Research UK, 2010) and causes the greatest problems in low-income countries in which health care resources are limited (Bosch et al (1995). • Furthermore, in the UK, approximately 55 women are diagnosed with cervical cancer every week (Cancer Research UK, 2010). • Finally, in the UK, around two thirds of women survive the disease for five years or more with survival rates being much higher in women diagnosed at a younger age. Women diagnosed under 40 years of age have survival rates of more than 85% (Cancer Research UK, 2010). Despite these survival rates, women diagnosed with this type of cancer die younger than in most other cases of cancer (Currin et al 2009) • Cervical cancer is caused by particular strains of use a sexually transmitted virus Human Papilloma Virus (HPV).
The determinants of cervical cancer Effective screening programmes are successful at early detection and are a significant determinant of outcomes. Poverty and socioeconomic disadvantage are directly linked to cervical cancer for example, the ability to negotiate safe sex is affected by societal position. Access to quick and effective treatment (of lack of) is a key determinant of outcomes once a woman is diagnosed with cervical. Individual behaviours such as not smoking are important in reducing the risk of cervical cancer. Age is an important factor. For example, delaying the age of first intercourse is important in reducing the risk of cervical cancer.
Addressing cervical cancer • Primary prevention approaches Development of Human Papilloma Virus (HPV) vaccination programme will protect young women against the causative agent of cervical cancer. Screening programmes (both Pap smears and HPV swabs) can be used to detect at risk young women to have preventive treatment.
Addressing cervical cancer • Lifestyle and behavioural approaches Delaying the age of first sexual intercourse Using barrier methods such as condoms will prevent against transmission of HPV. Compliance and adherence to both vaccination and screening programmes. Education about the risks of HPV via schools SRE programmes, Caution needed here not to victim blame individuals
Addressing cervical cancer • Changing the social and economic environment Links between social position and cervical cancer can be found (Currin, 2009). Changing the culture of sexual behaviour in which partners can negotiate safer sex is the goal of changing to social environment. Changing the stigma associated with HPV may aid fuller discussion about cervical cancer.
Addressing cervical cancer • Policy Evidence that more liberal approaches such as those in Holland will lead to reduction in unsafe sexual behaviour. Stronger commitment to lifeskills approaches to SRE. Commitment to resourcing vaccination and screening for HPV.
Case study: neighbourhoods as a setting for health • There is a strong relationship between health and place • A ‘settings approach’ to health promotion came from Ottawa Charter for health promotion stating that “Health is created and lived by people within the settings of their everyday life; where they learn, work, play and love” (WHO, 1986 p 6). • It was proposed that health promotion activities take place in settings and their associated systems to improve overall health. Investments in health are made in social systems for which health is not their primary remit (Dooris, 2004). • Neighbourhoods provide a major setting in which people live and work and can be thought of as a location in which a raft of health promotion strategies can be applied. • Naidooand Wills, (2009) suggest that neighbourhoods are a key setting for health promotion because physical and social environments interact with other service provision such as health care, welfare services, important hubs like a pubs, shops, post offices, community centre and churches.
Critiques of rainbow model • The framework tends to be more descriptive rather than analytical about the relationships between different influences on health. • The model, as it stands, neglects global, political and historical determinants of health. • As a model to depict the determinants of health, rather than health inequalities the distinction between the social factors influencing health and the social processes determining inequality can easily become confused. • Determinants of health resulting from the lifespan are also not considered in the model with any great effect.
