Calot Gérard. ? The Measurement of Rates in Demography : Rates by Age in Completed Years versus Rates by Age reached during the Calendar Year. Presentation of the Issue n° 104 in the INED Series. According to countries and to periods, age-specific rates by year of observation are established...

Calot (Gérard). - Relationships between Cohort and Period Demographic Indicators Demographers commonly distinguish between period indices which refer to observations at a point in time and cohort indices which refer to generations. In this study we are concerned with establishing relationships...

rates of births by the registration system. The rate of omissions of deaths can also be derived from these results, on the basis of the absence of international migration, provided that the yearly series of population numbers is correct. The results one gets lead to seriously question some...

Calot Gérard. ? New Data on the Chinese Demographic Situation. I. 1953, 1964 and 1982 Censuses and Crude Rates since 1950. On the occasion of the publication of the first results of the 1982 Population Census, the People's Republic of China has recently released a great deal of information on...

Calot Gérard. ? An interesting concept : The average size of the cohorts at risk. I. Methodological presentation. The average size of the cohorts at risk is the weighted mean of the numbers of persons belonging to the various cohorts (defined e.g. by age or marriage duration), the weights being...