Dallal G E
USDA Human Nutrition Research Center on Aging, Tufts University, Boston, MA 02111.
Comput Biol Med. 1989;19(5):367-71. doi: 10.1016/0010-4825(89)90058-9.
This paper describes a program that calculates the Foulkes-Davis tracking index, the probability that two individuals selected at random will have measurement curves that do not cross.