Summary
Betting odds for possible carriers of haemophilia have been calculated using data
derived from normal and known carrier populations. For each possible carrier the concentration
of factor VIII-related antigen and factor VIII biological activity was measured and
used to determine the probability of the individual being a carrier. The calculations
indicated that, of the 32 possible carriers, 11 were likely to be normal (odds of
more than 5:1) while 11 were likely to be haemophilia carriers (again odds of more
than 5:1).