AAPOR urges all practitioners to use these standardized sample disposition codes in all reports of survey methods, no matter if the project is proprietary work for private sector clients or a public, government or academic survey. This will enable researchers to find common ground on which to compare the outcome rates for different surveys.
K. Jöreskog. Structural equation models in the social sciences, Volume 1970 von Quantitative studies in social relations, Seminar Press, New York u. a., (1973)