1 Research Fellow 2 Lecturer in Statistics 3 Professor of Epidemiology 4 Senior Lecturer in Sociology, London School of Hygiene & Tropical
Medicine, London WC1E 7HT, UK
Figure 2.Average distances walked annually by children aged 0-14, by three
indicators of socio-economic status of household. (a) No access to
vehicle; (b) head of household not working; (c) home is rented