a1 Faculty of Medicine, Jordan University of Science and Technology, Irbid, Jordan
The rate of consanguineous mating in north Jordan was 63·7% with an average inbreeding coefficient of 0·0283. First cousin marriages were the most predominant type (58·5%); villagers showed higher levels than city dwellers. The level of female education did not influence consanguinity rate.
(Received November 11 1991)