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Results for “Gross Reproduction Rate”

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At least 37 records · Page 2Linked to original sources
PubMed1988

The effect of variability in the fertility schedule on numbers of kin.

"The kinship formulas developed by Goodman, Keyfitz, and Pullum (1974) are extended to encompass populations in which fertility varies among women. An expression is derived to determine the amount by which the number of sisters in a heterogeneous population exceeds that in a population with homogeneous fertility. This expression, which is a function of the variance in the gross reproduction rate of the population, can readily be applied to numbers of other kin, such as aunts and cousins. Several trial calculations indicate that calculations of average numbers of sisters based on an assumption of uniform fertility could result in a underestimate of about 13 percent." (SUMMARY IN FRE)

Demography↗
PubMed1980

Effects of fertility and mortality on extinction of family and number of living children.

A model is developed to study the effects of fertility and mortality on number of living children and on extinction of family. Numerical illustrations are provided by applying the model to three different populations differing in fertility and mortality. It is found that a combination of a high birth rate and a low death rate is required to assure a reasonable probability that the family will not ultimately become extinct. A moderate to high birth rate and a low death rate are necessary to assure that there will be at least one surviving son in the parents' old age. This finding implies that zero population growth is impossible as long as parents depend on children for old age security. Thus, alternate old age security measures must be adopted by societies attempting to reduce their birth rate to the replacement level.

Family Characteristics↗
PubMed1993

Estimation of parity progression ratios from the distribution of births by order and age of the mother.

"This paper presents a methodology for estimating parity progression ratios (the probability that a woman after delivering...any particular birth will ever proceed to the next birth), utilizing data on births tabulated by birth order and age of the mother in a particular year. This approach...does not need estimates of [gross reproductive rate] as well as the infant mortality rate but it requires knowledge of the growth rate of the population." The technique is illustrated with data from the 1984-1987 Pakistan Fertility Survey.

Asia↗
PubMed2004

Reproduction rates for 1990-2002 and intrinsic rates for 2000-2001: United States.

OBJECTIVE: This report presents revised rates of reproduction for 1990-93, reproduction rates for 1994-2002, and intrinsic rates for 2000-2001. The revised rates for 1991-93 are based on populations consistent with the April 1, 2000, census, as are the rates for 1994-2002. METHODS: Tabular and graphic data on the reproduction and intrinsic rates by race and Hispanic origin of mother are presented and described. RESULTS: Rates of reproduction (total fertility, gross reproduction, and net reproduction rates), the intrinsic rate of natural increase, and the intrinsic birth rate were lower in 2001 (and 2002) than 1990. Among the race and Hispanic subgroups, the reproduction rates were lower for all groups except Cubans and whites (total). The overall intrinsic death rate increased between 1990 and 2001 with the rate declining for whites (total) but increasing for blacks (total).

Birth Rate↗
PubMed1981

[Robust estimation of fertility by the use of model stable populations].

"If we know the proportion of population under 15 years of age, the probability of newborns to reach 5 years of age and the rate of growth of that population, by means of a very simple procedure we can estimate the birth rate, the growth reproduction rate and the total fertility rate through the appropriate use of stable population models. Even if the real population is far from being a stable population the estimates are very little affected, which shows the robustness of the procedure." (summary in ENG)

Birth Rate↗