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At least 55 records · Page 3Linked to original sources
PubMed1988

Hysterectomy, tubal sterilization, and the risk of breast cancer.

Studies suggest that hysterectomy and tubal sterilization may alter the function of the remaining ovaries. Conceivably, this effect could alter breast cancer risk. To investigate whether these surgeries affect breast cancer risk, the authors analyzed data collected between December 1, 1980, and April 30, 1983, in a population-based, case-control study of women aged 20-54 years, the Cancer and Steroid Hormone Study. Compared with never-sterilized women, women with hysterectomy and no remaining ovaries had a decreased risk of breast cancer (relative risk (RR) = 0.7, 95% confidence interval (CI) = 0.6-0.8). Risk was lowest in women who had their surgery before age 40 years or 15 or more years in the past; surgery at an early age provided greater protection than surgery in the distant past. Hysterectomy with one or two remaining ovaries was also inversely associated with breast cancer risk (RR = 0.8, 95% CI = 0.7-0.9), but no relation was found with age at surgery or time since surgery. Women with tubal sterilization had a slightly increased risk of breast cancer, which was of borderline statistical significance (RR = 1.2, 95% CI = 1.0-1.3). However, no relation was found with age at surgery or time since surgery. The data suggest that hysterectomy with bilateral oophorectomy decreases the breast cancer risk in women aged less than 55 years, possibly by curtailing ovarian function at a critical period. However, neither hysterectomy without bilateral oophorectomy nor tubal sterilization appears to substantially alter breast cancer risk in women of this age.

Adult↗
PubMed1988

Changing patterns of migration and regional economic growth in the U.S.: a demographic perspective.

During the 1970s and early 1980s, the South and West census regions accounted for over 90% of incremental national population, which was easily the highest percentage accounted for by these regions in the nation's history. This paper stresses the importance of powerful demographic forces that contributed to the regional shift, but it does not ignore important economic factors. A major theme of the paper is that because the baby boom has now largely matured out of the most mobile age classes, population and employment growth differentials that strongly favored the South and West will moderate in the future.

Age Factors↗
PubMed1992

Potential movements of capital and labor in northeast Asia.

"This paper provides background information for potential movements of capital and labor within Northeast Asia. First, it reviews recent geopolitical changes...and the current state of capital and labor movements between the countries of Northeast Asia along the broad theme of regional cooperation. Second, the paper assesses potential movements of capital and labor in the near future based on planned or anticipated development projects in the region. Finally, political and social barriers to movements of capital and labor and some measures to facilitate such...movements are discussed."

Asia↗
PubMed1999

Sex and race differences in cardiovascular disease risk factor changes in schoolchildren, 1975-1990: the Princeton School Study.

OBJECTIVES: This study was done to assess changes in obesity and risk factors for cardiovascular disease (CVD) in Black and White children from 1975 through 1990. METHODS: A cross-sectional study of body composition and CVD risk factors conducted in a school district as part of the Lipid Research Clinics (LRC) Program Prevalence Study (1973-1975) was compared with a later study (1989-1990) conducted in the same school district, which remained demographically stable. The studies included 1456 third- and fifth-grade students and 300 LRC subjects within the same age ranges. RESULTS: Students in the 1989-1990 study had a significantly higher mean body mass index (BMI), total blood cholesterol concentration, and systolic and diastolic blood pressures and marginally higher resting heart rates than those in the earlier study. The prevalence of obesity increased from 12.5% to 25.3%, and of hypercholesterolemia from 8.0% to 14.8%. Black females had the largest increase in BMI and resting heart rate and the highest prevalence of elevated total cholesterol in the 1989-1990 study. CONCLUSIONS: The results of this study suggest a secular trend toward increased obesity in children and portend the potential development of a public health problem that could reverse the recent decline in morbidity from CVD.

Adolescent↗
PubMed1979

Migration and urbanization in Ecuador: a view from the coast.

"The present study takes a regional view of urbanization and migration in coastal Ecuador, and presents field data collected [in 1970 and 1971] in the port city of Manta. This study seeks to account for various national and international influences that work to shape conditions in Manta, and on the coast generally, and to specify and account for patterns of socieconomic inequality, particularly as they relate to migration and urbanization."

Americas↗
PubMed1989

Geographical characteristics of migration linkages in the Moscow capital region.

"A study of migration processes in the Moscow Capital Region over the period 1970-1985 begins by assessing their contribution to overall population growth within the region vis-a-vis natural increase and territorial and administrative changes. Attention then is turned toward movements both within the Moscow Capital Region and between it and other oblasts of the European RSFSR. Although the overall volume of migration within the Moscow capital Region and between it and remaining oblasts of the European RSFSR declined, the relative popularity of the former as a destination among migrants in European Russia remained unchanged."

Demography↗
PubMed1993

[Continuities and changes in Swiss migration policy].

"In May 1991 the Swiss Federal Government...submitted to the Parliament some proposals aiming at reshaping the immigration policy. In this article, we give an overview of the current re-organisation of policy, we analyse the underlying logic of the adopted measures as well as their possible consequences, and we try to show how the policy towards foreigners interferes with the policy towards refugees and asylum-seekers. We describe the political and economic motivations behind the changes in policy.... We show how immigration policy and asylum policy have become gradually incompatible.... The contradiction is obvious in three aspects of the current policy: the ethnic selection, the selection according to occupations, and the legitimation of the selection." (SUMMARY IN ENG)

Culture↗
PubMedDate not supplied

An overview of the socio-economic and demographic transition among the Santal: a census analysis.

The Santals are described as the largest most integrated and possibly the most resilient tribe in eastern India. "The paper aims at looking into the parameters that set Santals in the process of socio-economic and demographic transformation and subsequently search for, the plausible explanation for the underlying mechanism for such changes.... The paper discusses the growth of their population and finds that Santals are growing below national average with increase in concentration in some of the pockets in Bihar and West Bengal, while it is spreading towards evenness in Orissa. In the absence of 1991 census data on the tribe wise breakdown the analysis has been restricted to the 1961, 1971 and 1981 census returns and availability of the literature on the tribe."

Asia↗