Acute sports injuries

develop the disease when old: crudely, we now have six annual cohorts of 1 year olds but only one annual cohort of 6 year olds.Assuming that the diagnoses for cows born after the ban were made between January 1990 and October 1995, I have calculated the number of annual cohorts of calves implicit in each age group of such diagnoses (table 1).The final column of the table then lists by age the number of diagnoses per annual cohort.These figures are thus equivalent to the column for the single year 1989.The age structure of diagnoses can indeed be seen to have changed little.What is surprising, however, is that the incidence of the disease increased substantially after the ban.Among 5 year olds, for example, 1874 of those born in 1984 were affected; this figure increased to roughly 4353 of those born in 1989.Perhaps the Ministry of Agriculture, Fisheries and Food could supply the exact figures.