If sampling bias is not accounted for, results can be erroneously attributed to the phenomenon under study rather than to the method of sampling. In the case of measuring AfT flows, the dominance of certain sectors and CRS codes may be partially accounted for by the dominance of certain developing countries in the AfT data, whose policy priorities may in turn be skewing AfT statistics away from emphasising trade adjustment needs. Table 13.8 shows the income distribution of the top 50 AfT recipients in the CRS database for 2010.