1 Quantitative research and the body mass index

A drawing that overall is semi-circular in shape with a single circular image in the centre. From this central image are four emanating layers, each containing slightly larger rainbow-shaped areas. The second, third and fifth layers each contain one continuous section. The fourth layer is divided into eight sections. The central image is an abstract representation of a range of people. Under this are the words ‘Age, sex and constitutional factors’. In the next rainbow-shaped layer are the words ‘Individual lifestyle factors’. The third layer contains the words ‘Social and community networks’. Working from a clockwise direction, the fourth layer lists living and working conditions that are relevant to people’s lives: ‘Agriculture and food production’, ‘Education’, ‘Work environment’, ‘Living and working conditions’, ‘Unemployment’, ‘Water and sanitation’, ‘Healthcare services’ and ‘Housing’. In the final rainbow-shaped layer are the words ‘General socioeconomic, cultural and environmental conditions’.