Our most intensive epidemiologic studies have been carried out in six cotton-mill villages in Spartanburg County, S. C., selected as fairly representative of the many mill villages in that part of the country. In each of these villages the family of each operative was visited at his home and a complete record was taken on a uniform printed card, of the location of the house, the sex, age, relationship, occupation, period of present residence and association with pellagra, of each inhabitant. On the reverse side of the same card was recorded the frequency of use of certain important elements of the diet and the condition of the house in respect to screening and general condition.
Whenever a case of pellagra was found, the usual complete history of the individual was taken, and this included a record of the previous residences of the individual, the time of the first
SILER JF, GARRISON PE, MacNEAL WJ. A STATISTICAL STUDY OF THE RELATION OF PELLAGRA TO USE OF CERTAIN FOODS AND TO LOCATION OF DOMICILE IN SIX SELECTED INDUSTRIAL COMMUNITIES. Arch Intern Med (Chic). 1914;XIV(3):293-373. doi:10.1001/archinte.1914.00070150006002