[Population growth, 1986].
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Demographic trends in the Netherlands during 1992 are reviewed. Among the findings, the author notes that "in 1992 the Dutch population grew by 110 thousand.... The number of births fell by some 2 thousand, immigration by 3.5 thousand. The number of deaths remained unchanged. Emigration increased by 1.5 thousand.... Twelve per cent of the population live in a one person household. Thirty years ago this was only 3%. Due to the decreased average number of children per family the proportion of children fell from 44% in 1960 to 30% in 1992. The number of people who were born abroad shows an annual growth of 4.4%. The growth of the native population is 0.44% per year.... Fertility is highest for 30 year old women. In 1970 this was the case for those who were 26 years of age." (SUMMARY IN ENG)
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"In this paper are explored the problems involved in using Census data as a guide to the evolving ethnic geography of British cities. The relationship between the concept of ethnicity and Census questions on place of birth is traced. The country-of-birth statistics for Small Areas from the 1971 and 1981 Censuses are employed in an attempt to ascertain the influence of technical specifications on the measurement of the residential segregation of ethnic groups in order to distinguish real differences from apparent ones. The attempt is not fully successful, but it does provide clear pointers on how to proceed further in research on the ethnic spatial mosaics that [British] cities now are."
"This paper links data obtained from a one-in-five systematic sample of New Zealand divorce files covering the period 1940-78 with published marriage and birth statistics to examine socio-demographic differentials in divorce rates among couples married between 1939 and 1973. Differentials investigated are those by age at marriage, relative age of bride and groom, marital status prior to marriage, relative marital status of bride and groom, pregnancy status of the wife at marriage, timing of the first birth, religion, country of birth and socioeconomic status. Several findings of overseas studies, such as the special proneness to divorce of very youthful marriages and remarriages following previous divorces, are verified for New Zealand. After controlling for age at marriage, pregnancy does not seem to have directly increased the risk of divorce."
Physical development appropriate for age, and the normal rate of development of children, are two well-known indicators of the biological status of populations. Physical development of children is influenced by several factors, and the intrauterine environment may be critical among them. The authors studied the effect of the prenatal environment, as measured by birth length and birth weight, and socio-economic factors, as measured by place of residence and educational level of parents, on the height of 18-year-old conscripts surveyed in 1998. The following results were obtained: 1. The conscripts were classified into one of the following groups: small for gestational age (SGA), appropriate for gestational age (AGA), large for gestational age (LGA) according to their data of birth and their development at birth. Statistically significant differences in birth length and height at 18 years of age were found for the AGA and LGA groups, according to place of residence at birth. In addition, nutrition at birth (and the biological and social inclusion related to this) affects the extent of change in physique between birth and 18 years of age, within each group. The extent of change in height in the SGA group is 122.38 cm, 123.40 cm in the AGA group, and 124.11 cm in the LGA group. With each neonatal developmental group, conscripts from Budapest had the highest values both in body length and height at 18 years of age. 2. The educational level of parents influenced the physical development of their children. Means of birth length, and of body height at the age of 18 years, were greater, the higher the level of education of their parents. The lower the level of education the parents have, the more significant is the difference between birth length and height at the age of 18 years, compared to the sample mean. This is attributed to a health-cultural-information deficit arising from the low level of education of the parents.
OBJECTIVE: In contrast with the non-opiate dependent population, persons biologically-dependent upon opioids display an excess life-time prevalence of affective and anxiety disorders. Many of these addicts state that opiates, particularly methadone, relieve or diminish the severity of their dysphoria. The purpose of this study is to explore this phenomena by analyzing how a specific population of long-term addicts (mean years of addiction 16.9, SD 3.8) differs from a non-opiate dependent population regarding seasonality of birth. METHODS: Birth months were determined for 457 opiate dependent patients, placed onto methadone maintenance for intractable opiate dependence, born between 1930-1970 (sorted by sex, race, year and place of birth), and compared to normal US birth statistics. Affective and anxiety disorders were screened for using psychometric testing, verified by structured clinical intervals. RESULTS: A significant difference was noted when comparing monthly births rates for patients and normals. Grouping the monthly data into birth trimesters (Oct-Jan; Feb-May; Jun-Sep) clearly shows this difference: opioid dependent persons--38.5/29.8/31.8%; normals--33.4/32.0/34.7%. As a group, intractable, opioid dependent patients demonstrate an increased life-time prevalence, relative to normals, of anxiety (27.8 vs. 13.9%), dysthymia (23.4 vs. 6.4%) and combined anxiety + dysthymia (17.9 vs. 1.5%); opioid dependent persons born between Oct-Jan demonstrated more anxiety (32.0 vs. 25.1%), dysthymia (29.3 vs. 19.5) and combined anx + dys (23.3 vs. 14.4) than those born in the other two trimesters. CONCLUSION: Persons entering methadone maintenance for opiate dependence with comorbid anxiety, dysthymia or combined anxiety + dysthymia are more likely to have been born in the period of Oct-Jan. This may be due to a higher risk of developmental aberrations occurring in infants born during the light-limited portion of the year creating a later propensity for intractable, opiate dependence.
STUDY OBJECTIVES: The etiology of cryptogenic fibrosing alveolitis (CFA) remains largely obscure, although a 1996 report suggested an increased risk from occupational exposure to metal and wood dusts. Using data from death certificates in England and Wales, we sought evidence of any relationship between occupation and CFA and of the extent of any temporospatial clustering of place of birth and place of death as possible evidence of a geographically related environmental factor. DESIGN AND SETTING: Data on occupation and address (postal code) were obtained from certificates of men and women dying as a result of CFA between 1981 and 1990 and were compared with national mortality statistics. Place of birth data were extracted from certificates for deaths between 1993 and 1995, the only available years, and were compared with national birth statistics. MEASUREMENTS AND RESULTS: Standardized mortality ratios (SMRs) were raised (p<0.05) in the following four occupational groups: members of the armed forces (SMR, 217.8); miners and quarrymen (SMR, 142.0); service, sports, and recreation workers (SMR, 118.6); and electrical and electronic workers (SMR, 146.6). Of these four groups, the latter group might be worth testing in a future study. There was statistical evidence of geographic clustering in postal code sectors for the recorded place of death, but the high-rate areas were different in men and women. Deaths were increased for those subjects born in urban areas, although these did not follow a clear geographic pattern. CONCLUSIONS: Overall, these analyses provide little evidence of any important contribution from environmental factors to the etiology of CFA and suggest that more consideration be given to alternative concepts of causation.
This is a descriptive analysis of the spatial context of residential moves by the over age forty-five population in the United States. It utilizes residential mobility and state of birth statistics calculated from a 15 per cent sample of the United States population drawn for the U.S. Census. It specifically focuses on the likelihood that the age sixty-five and over white and black mover will relocate within his same county or state of residence. The paper reveals that the preponderance of residential moves by the elderly (whether black or white) are within the same county. Only a relatively small percentage make interstate moves. The majority of elderly live in the state of their birth. However, there is no evidence that as a consequence of aging moves become more spatially restricted until after age seventy-five. It is argued that greater emphasis be placed on not why elderly persons move, but why when they do, their residential relocations occur within varying spatial contexts.
The position of Singapore as regards birthweight distribution and perinatal mortality has been compared with six countries in the 1973 WHO study namely, Austria, Cuba, Hungary, Japan, New Zealand and Sweden. Birthweight distribution and perinatal mortality reflect both the social and health conditions of a population and the standards of obstetric and paediatric care, and seeing where a country ranks in the international comparison of them may play a role in the formulation of health policy for that country. Singapore was well placed for the proportion of very low birthweight babies (less than 1,500 grams), ranking 2nd for both live births (0.5%) and total births (0.7%). It was however not so well placed for proportion of low birthweight babies (less than 2,500 grams), ranking 5th for both live births (8.8%) and total births (9.2%). With regard to perinatal mortality Singapore at 20.0 per 1,000 total births ranked 4th and this improved to 3rd after standardizing for birthweight and in fact was little different from Hungary (1st) and Sweden (2nd). Given that standardization for birthweight largely removes the effect of "socioeconomic and demographic factors" so that remaining differences to a large extent reflect medical care, this indicates a relatively high standard of perinatal care in Singapore. The problems of interpretation, the implications of the findings and suggestions for improving birth statistics in Singapore are discussed.