Migration, Marriage, and Mortality.

The article discusses the family reconstitution and relates it demographically to migration, marriage and mortality. Family reconstitution is the process of linking together historical parish records of baptisms, marriages, and burials; it yields a set of demographic life-histories between parishes scattered their life-histories from which rates can be calculated. People who moved their demographic life-histories across the countryside. As they need to be usually re-assembled, they must be excluded from most demographic analyses. Most of the concern about the effects of the exclusion of migrants has focused on the question whether demographic behavior of migrants and non-migrants was similar, or not. It has been less commonly noted that migration can bias estimates of such measures as mean age at marriage and life expectancy, even if age-specific demographic rates of migrants and non-migrants were identical. The most significant consequence of correcting the censoring biases is probably the upward revision of age at marriage.