First, misclassification of exposure due to changes in arsenic intake during the study period might have occurred, because information on consumption was obtained at one point only.
Where information on consumption in grams was missing, it was assumed that one portion of vegetables of fruit was equivalent to 80gg.
For example, it now surveys taxi drivers, hairdressers and the like to rectify deficiencies in its information on consumption.
The regulator, Ofgem, has set up a trial in 59,000 homes of combinations of three environmental aids – posted information on consumption, clip-on digital displays and smart meters.
It provides information on demographic and socio-economic characteristics of all co-residing household members (the demographic composition of the household and detailed information on consumption, subjective poverty, education, health, housing, labor, credit, agricultural and non-agricultural activities).
Energy usage included information on consumption of biomass fuels and commercial fuels for cooking and heating, sources of procurement of cooking fuel, time and effort involved in procurement, and energy demand.
Unfortunately, we do not have sufficient information on alcohol consumption, cigarette smoking, vitamin consumption, medication, and genetic factors.
This questionnaire was modified in order to complement the information on tobacco consumption and to include alcohol consumption in detail.
In order to obtain more detailed information on food consumption patterns, Table 5 disaggregates food expenditure into market goods consumption and home-produced consumption.
However, self-reported information on alcohol consumption is known to underestimate true consumption.
Information on alcohol consumption, fruit and vegetable intake, and physical activity was obtained from 1980.
