Editing Dosage Index (section)

==History==
Interest in determining which sires of race horses transmit raw speed, and which sires transmit stamina (defined as the ability to successfully compete at longer distances) to their progeny dates back to the early 20th century, when a [[France|French]] researcher, Lt. Col. J. J. Vuillier, published a study on the subject (called Dosage), which was subsequently modified by an [[Italy|Italian]] breeding expert, Dr. Franco Varola, in two books he authored, entitled ''Typology Of The Race Horse'' and ''The Functional Development Of The Thoroughbred''.{{cn|date=June 2024}}

However, these observations attracted little interest from the general public until 1981, when ''[[Daily Racing Form]]'' breeding columnist Leon Rasmussen published a new version of Dosage developed by an American scientist and horse owner, Steven A. Roman, Ph.D., in his analysis of the upcoming [[Kentucky Derby]] for that year.<ref>{{Cite news |last=Beyer |first=Andrew |date=February 6, 1983 |title=Dosage Index: The Numbers Game In Horse-Breeding Analysis |newspaper=[[Washington Post]] |url=https://www.washingtonpost.com/archive/sports/1983/02/06/dosage-index-the-numbers-game-in-horse-breeding-analysis/6b23aea8-3edd-4e41-a5a6-bde504236a07/ |access-date=October 22, 2023}}</ref>  The new approach, which was more accessible to owners, breeders and handicappers and was supported by solid statistical data, rapidly caught on, and the term "Dosage Index" has been a fixture in the lexicon of [[horse racing]] ever since.<ref>{{Cite web |last=Mitchell |first=Eric |date=December 30, 2019 |title=Steve Miller Carrying On the Legacy of Dosage |url=https://www.bloodhorse.com/horse-racing/articles/237648/steve-miller-carrying-on-the-legacy-of-dosage |access-date=October 22, 2023 |website=www.bloodhorse.com}}</ref>  The details of Dosage methodology have been summarized in Dr. Roman's book entitled ''Dosage: Pedigree & Performance'' published in 2002.