Thank you for the response, and all the offline information you have provided. Apologies if my initial comment was a bit provocative! I agree that WB and others do the best possible with data available. I do also completely echo Shanta's points about limitations of the data because of timeliness and accuracy of collection or because of political interference. Collecting the data alone is a huge logistical task, especially in a continent which is still largely rural. Although there is nothing better available, it does not seem right that for example MDG1a is measured on data which for the most part for Africa is over 10 years old.