However, in the 1940's and 50's it was considered a reliable index of living standards. Ridley recoded from the original punch cards which had been created. Because the raw data were not available, it was not possible to check the original coders' reliability. However, Ridley assumes the original work was very carefully done. She coded only the data from fecund couples.
Computer data are available.
Original weighting was accomplished by direct duplication of records. The tape consists of 4291 variables for 1444 cases. Original funding for this study was done under the auspices of the Milbank Memorial Fund with grants from the Carnegie Corporation of New York. HD62818, Jeanne Clare Ridley, Principal Investigator. Social and Psychological Factors Affecting Fertility, Volume 1-5.