chemicals in the home, proximity to heavy traffic, types of heating and cooking at home, ventilationNoise: exposure at home and at schoolPhysical environment: time spent outdoors, methods of getting to school, time spent on various activities including watching TVSafety equipment and measures taken in the homeType of school: school environment, day care, out of school care, school choice‘Focus’ clinical assessment measures (nine clinics from the age of 7–17 years (Supplementary Table S1, available as Supplementary data at IJE online), full ‘eligible sample’ invited, see recruitment earlier in this article) Physical activity: ‘actigraph’ activity accelerometers and ‘G4’ impact monitorsDiet: using 3-day dietary diaryType of day careSpecial studies of subsamples of homes Air pollutants within and outside the homeNoise levels within the homeUsing available census and local authority data Classification of housing band (for council tax)Proximity of home to power linesLinkage to deprivation level of neighbourhood
