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PubMed1982

Families in Israel, 1981.

This article "presents data on families (households) in Israel for the year 1981. The data are based on the series of civilian Labour Force Surveys conducted since 1954, and relate to the characteristics of families in Israel with regard to size of family, population group, age, continent of birth, years of schooling, type of locality of residence and sex of head of family."

Age Factors↗
PubMed1980

Families in Israel, 1979.

This publication "presents data on families (households) in Israel for the year 1979. The data are based on the series of civilian Labour Force Surveys conducted since 1954, and relate to the characteristics of families in Israel with regard to size of family, population group, age, continent of birth, years of schooling, type of locality of residence and sex of family head."

Asia↗
PubMed1981

Families in Israel, 1980.

This publication "presents data on families (households) in Israel for the year 1980. The data are based on the series of civilian Labour Force Surveys conducted since 1954, and relate to the characteristics of families in Israel with regard to size of family, population group, age, continent of birth, years of schooling, type of locality of residence and sex of family head."

Age Factors↗
PubMedDate not supplied

[Place of residence and registration: problems and comparability in the classification of births].

In 1973, the classification method for births in Mexico was changed from place of registration to place of mother's residence. "The objective of this work is to analyze how the place of 'customary residence of the mother' has been registered and to determine if the change of classification has some effect [on] the comparability of the information about births in different states. The information analyzed is divided into two periods, according to the way in which it was obtained and processed and the institution responsible for its publication." (SUMMARY IN ENG)

Americas↗
PubMed1993

[Enumeration from municipal population registers, January 1, 1992. Main results].

"On 1 January 1992 the Netherlands Central Bureau for Statistics carried out an enumeration from computerized municipal population registers. For each inhabitant the following data were collected: municipality of residence; sex; year of birth; family status; family formation; address; nuclear family number; marital status; year of most recent change of marital status; nationality; country of birth; father's country of birth; mother's country of birth; [and] year of most recent settlement in the Netherlands." The focus is on changes in family composition. (SUMMARY IN ENG)

Demography↗
PubMed1997

Genetic effects on variation in red-blood-cell folate in adults: implications for the familial aggregation of neural tube defects.

Recent studies have implicated folic acid as an important determinant of normal human growth, development, and function. Insufficient folate levels appear to be a risk factor for neural tube defects (NTD), as well as for several chronic diseases of adulthood. However, relatively little is known about the factors that influence folate status in the general population. To estimate the relative contribution of genetic and nongenetic factors to variation in folate, we have evaluated red blood cell (RBC) folate levels in 440 pairs of MZ twins and in 331 pairs of DZ twins. The data were best described by a model in which 46% of the variance in RBC folate was attributable to additive genetic effects, 16% of the variance was due to measured phenotypic covariates, and 38% of the variance was due to random environmental effects. Moreover, the correlations for RBC folate in MZ co-twins (r = .46) and in repeat measures from the same individual (r = .51) were very similar, indicating that virtually all repeatable variation in RBC folate is attributable to genetic factors. On the basis of these results, it would seem reasonable to initiate a search for the specific genes that influence RBC folate levels in the general population. Such genes ultimately may be used to identify individuals at increased risk for NTD and other folate-related diseases.

Adult↗