Few studies give a quantified estimate of the effect of food advertising on childhood obesity, or of the effectiveness of measures to limit the exposure of children to advertising.
The Bank will also scrutinise the effectiveness of measures aimed at limiting the risks in the housing market.
A number of Tories are sceptical about the science of climate change or the effectiveness of measures to tackle it.
We discuss several cases illustrating conditions under which circulating messages occur and the effectiveness of measures to squelch these messages.
MPs also called for clarity on the "growing risk" of VAT fraud by internet traders, and on the effectiveness of measures intended to tackle this fraud.
There are only 22 studies which provide empirical support for the effectiveness of measures.
"In order to ensure the effectiveness of measures against global warming, it is essential that all countries make efforts to reduce greenhouse gas emissions," Prime Minister Junichiro Koizumi said in a statement.
Comparisons of the relative effectiveness of measures aimed at reducing residential energy consumption are made challenging, however, by the endogeneity of technology and energy use decisions.
Drinking water supply companies monitor the presence of Escherichia coli in drinking water to verify the effectiveness of measures that prevent faecal contamination of drinking water.
Understanding spatial variability of soil properties in response to land-use impacts is essential for evaluating the effectiveness of measures taken to address diffuse water pollution from agriculture.
The lack of guidelines limited the real effectiveness of measures pertaining to training, rescue, use of certain control measures, and the preparation of entry permits.
