Most of the $80bn of development funds sent to Africa went to areas where national leaders were born rather than the most needy, says AidData report

African leaders are almost three times more likely to spend Chinese development aid in areas where they have ethnic ties, casting doubt on the humanitarian effectiveness of Beijing’s strict “hands-off” policy in the continent.

China says it spends more than half of its foreign aid in 51 African countries, and AidData, an open-source data centre, says Beijing sent more than $80bn in “pledged, initiated, and completed projects” between 2000 and 2012. Most of that aid went to areas where national leaders were born, indicating a strong political bias, AidData said.

“As soon as [a region] becomes the birthplace of an African president this region gets 270% more development assistance (from China) than it would get if it were not the birth region of the president,” said Roland Hodler, professor of economics at the University of St Gallen in Switzerland and co-author of a report, Aid on Demand: African Leaders and the Geography of China’s Foreign Assistance, published in conjunction with the database.

Ghana, the Democratic Republic of the Congo and Ethiopia received the most Chinese development assistance over the reporting period, the study showed.

China is sending development funds to African governments with the aim of buying long-term political alliances, Hodler said. Sierra Leone’s president, Ernest Bai Koroma, recently used Chinese aid to build a school in Yoni, his hometown, according to the report.

“To us, this suggests that the Chinese principle of non-interference in domestic affairs allows African presidents to use Chinese aid for patronage politics. I am sure the Chinese are aware of this, and I would argue that they accept it because they care more about having a president who is sympathetic to them than about the poor,” said Hodler.

But the study also noted that, contrary to popular belief, Chinese aid to Africa is not strongly tied to countries that host Beijing’s oil and mining operations. “We do not find a strong pattern that Chinese aid only goes to regions where there’s a lot of natural resources. The picture that they only go after natural resources is not really confirmed by our sub-national level analysis,” Hodler said.

Deborah Brautigam, director of the China Africa Research Initiative at John Hopkins University, said: “Most Chinese finance in Africa is not official aid, but business-related export credits borrowed by governments to finance infrastructure projects of various kinds. If these governments want to channel projects to their home town, Chinese banks would have no objection.

“For official aid, which is heavily diplomatic, the Chinese government looks beyond any sitting African leader to all the leaders to come, and to public opinion more generally. This is why they use their official aid for big, visible projects like stadiums, ministry buildings, and airports that can be seen and used by many people - in the capital city - and not tucked away in a rural hamlet.”

Researchers took data that China published on its foreign assistance and mapped where development projects were located. “The Chinese tend to send more aid to countries that are somewhat poorer but within these countries they go for the relatively rich regions,” said Hodler.

China maintains that it sends aid to African governments with the aim of furthering their development agendas.

The Chinese government said in July: “When providing foreign assistance, China adheres to the principles of not imposing any political conditions, not interfering in the internal affairs of the recipient countries and fully respecting their right to independently choosing their own paths and models of development. The basic principles China upholds in providing foreign assistance are mutual respect, equality, keeping promise[s], mutual benefits and win-win.”

• This article was amended on 21 November 2014 to clarify that the $80bn figure for aid to Africa between 2000 and 2012 was an estimate by AidData, not an official Chinese government figure, and that the estimate includes “pledged, initiated, and completed projects”.