The effect of war on marriage,divorce and birth rates

The impact of war on marriage, divorce, and birth rates in the United States from 1933 to 1986 is explored. The author concludes that "the involvement of the nation in military activities was accompanied by a decrease in marriage and birth rates but not by any change in divorce rates. Mobilization of the armed forces and demobilization had no discernible impact on divorce, marriage or birth rates."     

Changes in the distribution and composition of the population recorded as temporary residents in the years 1978-1980

The author describes two surveys carried out in 1978 and 1980 in Poland that were concerned with temporary residence, defined as residence for more than two months. The results of the surveys are presented, including data on age, sex, and urban or rural residence.     

The four-parameter logit life table system

Summary Brass's model life table system, which is a two parameter system based on the logit transformation of survivorship values, has been widely and successfully used to describe age patterns of mortality in many populations. As more reliable information has become available for populations with mortality patterns which differ in important ways from the assumed standard pattern of mortality, a more flexible model system is needed. This paper shows how Brass's system can be expanded into a four-parameter model, and evaluates the performance of the new system by examining how well it can fit observed life table data.