However, the indicators have two limitations that must be mentioned, namely: (a) the indicators are based on national averages, and (b) neither indicator measures the quality of the service provided. Hence, the deficit shown by these indicators may be greater in rural areas or less developed regions of a country, and may affect poorer sections of the population to a greater degree. However, across the countries of the region progress in achieving Millennium Development Goal 2 has, to varying degrees, fallen short. In a number of countries, a significant proportion of the population of primary school age is still excluded.