From the abstract of Endogamy in Egyptian Nubia:

“In a sample of 282 marriages in New Nubia in Egypt, 39% were between first cousins and 21% between less closely related kin. The average number of liveborn offspring in first-cousin marriages was higher than in marriages between more distant relations and unrelated spouses, but the number of deaths among children of first-cousin couples was also higher.”

Total Nubian consanguinity rate = 60% (60.5%*)

1C consanguinity rate = 39%
<1C consanguinity rate = 21%

Collection period: 1965-67
Study population: Household survey
Sample size: 282
Location: New Nubia

*According to consang.net.

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Compare:

1965-67 New Nubian 1C consanguinity rate = 39%
1967-68 1C Fadetchi consanguinity rate = 45.5%
1967-68 1C Kenuzi consanguinity rate = 47.2%
1967-68 1C Arab consanguinity rate = 41.5%

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From the abstract of Genetic Studies of Egyptian Nubian Populations. I.:

“Egyptian Nubians, who lived in an isolated area for many centuries, have migrated because of the construction of the Aswan High Dam and the subsequent flooding of their lands. They have settled in the valley of Kom Ombo, north of Aswan. Three major groups of Nubians can be distinguished: Fadetchi, Kenuzi and Arabs. Each group has its characteristic language and traditions, and constitutes an almost closed community. This report, one of a series on the genetical characteristics of the Nubian population, deals with the types and frequency of consanguineous marriages. A large number of married people and well-grown schoolchildren were interviewed. Analysis of the data showed that the Nubians have remarkably high consanguinity rates. These were 72.9, 75.4, 80.4% for the Fadetchi, Kenuzi and Arab communities. Amongst the consanguineous marriages, those of first cousins accounted for 45.5, 47.2 and 41.5% of the totals for the Fadetchi, Kenuzi and Arabs, respectively….”

Total Nubian consanguinity rate = unknown (63.6%*)
Fadetchi consanguinity rate = 72.9% (61.4%*)
Kenuzi consanguinity rate = 75.4% (62.0%*)
Arab consangunity rate = 80.4% (69.8%*)

1C Fadetchi consanguinity rate = 45.5%
1C Kenuzi consanguinity rate = 47.2%
1C Arab consanguinity rate = 41.5%

Collection period: 1967-68
Study population: Household survey
Sample size: unknown (1,782 [611, 757, 414]*)
Location: The valley of Kom Ombo, north of Aswan.

*According to consang.net.