Chinese obstetricians’ attitudes,beliefs, and clinical practices related to cesarean delivery on maternal request.

BackgroundObstetricians’ beliefs, attitudes, and clinical practices related to cesarean delivery on maternal request appears particularly important in the context of high cesarean section rate. However, few relative studies have been conducted.AimTo examine Chinese obstetricians’ attitudes, beliefs, and clinical practices with regard to cesarean delivery on maternal request, and to explore influencing factors associated with their practices of cesarean delivery on maternal request.MethodsA cross-sectional design was used. Self-administered anonymous questionnaires were distributed to eligible obstetricians at the Congress of the Shanxi Society of Gynecology and Obstetrics as well as the Congress of the Hainan Society of Gynecology and Obstetrics. The overall response rate was 526/649 (81.05%). Multivariate logistic regression models were used to examine independent effects on obstetrician’s clinical practices related to cesarean delivery on maternal request.FindingsObstetricians who agreed with pregnant women’s decision to choose cesarean section directly and believed the benefits of this procedure outweigh the risks had higher odds of performing cesarean delivery on maternal request. In addition, measures to decrease cesarean section at hospitals were associated with reduced likelihood to perform cesarean delivery on maternal request.ConclusionsThe present study showed a strong correlation between obstetricians’ attitudes, beliefs, as well as interventions to decrease cesarean section at hospitals and their clinical practices of cesarean delivery on maternal request. Measures to enhance the training of obstetricians and reduce CS at hospitals are essential to decrease the overall cesarean section rate in China.     

Left Out? Lesbian,Gay, and Bisexual Poverty in the U.S.

This paper analyzes the risk of poverty for self-identified lesbian, gay, and bisexual (LGB) people from mid-2013 through 2016 in the National Health Interview Survey, a nationally representative survey of households that includes a sexual orientation question based on identity (n = 112,143). The study tests the role of family structure—living with a spouse or partner and having children—on the risk of poverty for LGB and heterosexual respondents. After controlling for education, demographic, and health measures in a probit model, lesbians and gay men are as likely to be poor as similar heterosexuals, but bisexual women and men are significantly more likely to be poor, regardless of relationship status. Single and childless gay men are also more likely to be poor than single heterosexual men. Being in a relationship reduces the likelihood of poverty for people of all sexual orientations, but the data show evidence of a gender composition effect: married male same-sex couples are less likely and unmarried female same-sex couples more likely to be poor than their married counterparts. Marriage reduces gay men’s poverty risk more and children increase their poverty risk less than for heterosexual men.     

Comment on Bermingham's Summary of the U.N.'s Year 2000 Replacement Migration,Is it a Solution to Declining Population and Aging?

The UN's solicitousness for developed countries because of the possibility of their being depopulated seems disingenuous. In fact, developed countries are typically the losers from vast immigrant flows, and the underdeveloped countries that rid themselves of excess population are the gainers.     

Commentary on ‘Science,Measurement, and Validity: Is Completion of Samuel Messick's Synthesis Possible?’ by Keith A. Markus

Social Indicators Research -     

Dr.Gu Baochang Speaks Out on Son Preference in China

Ｄｒ．ＧｕＢａｏｃｈａｎｇＳｐｅａｋｓＯｕｔｏｎＳｏｎＰｒｅｆｅｒｅｎｃｅｉｎＣｈｉｎａ＂Ｉｍｐｒｏｖｉｎｇｔｈｅｓｔａｔｕｓｏｆｗｏｍｅｎｗｉｌｌｓｕｂｓｅｑｕｅｎｔｌｙｒｅｄｕｃｅｐｅｏｐｌｅ＇ｓｄｅｓｉｒｅｓｆｏｒｓｏｍｓｏｖｅｒｄａｕｇｈｔｅ...     

Comments on Daniel A. Seiver's ‘Recent fertility in Mexico: Measurement and Interpretation.’

In a recent article in this Journal,¹Daniel A. Seiver concludes that ‘fertility’ in Mexico did not decline between 1960 and 1970. His conclusion is based primarily on an increase in the child-woman ratio from 725 per 1,000 in 1960 to 762 in 1970. Seiver simply asserts that this increase cannot be completely explained by declining infant mortality and under-enumeration. ² Ibid, p 343. . ³ Ibid, p 351.      

Trends in U.S. adult chronic disease mortality, 1960–1999: age,period, and cohort variations

In this paper, I examine temporal changes in U.S. adult mortality by chronic disease cause of death and by sex over a 40-year period in the second half of the twentieth century. I apply age-period-cohort (APC) analyses that combine conventional approaches and a new method of model estimation to simultaneously account for age, period, and cohort variations in mortality rates for four leading causes of deaths, including heart disease, stroke, lung cancer, and breast cancer. The results show that large reductions in mortality since the late 1960s continued well into the late 1990s and that these reductions were predominately contributed by cohort effects. Cohort effects are found to differ by specific causes of death examined, but they generally show substantial survival improvements. Implications of these results are discussed with regard to demographic theories of mortality reductions, differential cohort accumulation of health capital and lifetime exposures to socioeconomic and behavioral risk factors, and period changes in diagnostic techniques and medical treatment.     

The population statistics of China,A.D. 2–1953

Chinese population statistics are collated from the time of the Western Han Dynasty (A.D. 2) to 19 5 3, including statistics of population and households for provinces as well as for China as a whole. Evidence bearing on the definitions of the statistics, methods of compilation, and reliability of the figures as measures of population size and change, is summarized. An "emended series " of population totals for China proper, A.D. 2 to 1953 is presented, excluding figures which are clearly defective.     

Energy use, population and growth, 1800�C1970

In this paper, the role of energy use is incorporated into unified growth theory. The paper presents some interesting evidence about the evolution of energy in the transition from stagnation to growth, and it subsequently develops a growth model where the observed increase in conversion efficiency in the coal energy sector is explicitly modelled and calibrated to existing data over the period 1800–1970. The quantitative analysis sheds light on the impact of energy use on the transition from stagnation to growth.     

Do Not Go Gentle Into That Good Night: The Effect of Retirement on Subsequent Mortality of U.S. Supreme Court Justices, 1801–2006

Mortality hazard and length of time until death are widely used as health outcome measures and are themselves of fundamental demographic interest. Considerable research has asked whether labor force retirement reduces subsequent health and its mortality measures. Previous studies have reported positive, negative, and null effects of retirement on subsequent longevity and mortality hazard, but inconsistent findings are difficult to resolve because (1) nearly all data confound retirement with unemployment of older workers, and often, (2) endogeneity bias is rarely addressed analytically. To avoid these problems, albeit at loss of generalizability to the entire labor force, I examine data from an exceptional subgroup that is of interest in its own right: U.S. Supreme Court justices of 1801–2006. Using discrete-time event history methods, I estimate retirement effects on mortality hazard and years-left-alive. Some substantive and methodological considerations suggest models that specify endogenous effects estimated by instrumental variables (IV) probit, IV Tobit, and IV regression methods. Other considerations suggest estimation by endogenous switching (ES) probit and ES regression. Estimates by all these methods are consistent with the hypothesis that, on average, retirement decreases health, as indicated by elevated mortality hazard and diminished years-left-alive. These findings may apply to other occupational groups characterized by high levels of work autonomy, job satisfaction, and financial security.     

Immigrant residential segregation in U.S. metropolitan areas, 1990–2000

This paper examines the extent of spatial assimilation among immigrants of different racial and ethnic origins. We use restricted data from the 1990 and 2000 censuses to calculate the levels of dissimilarity by race and Hispanic origin, nativity, and year of entry, and then run multivariate models to examine these relationships. The findings provide broad support for spatial assimilation theory. Foreign-born Hispanics, Asians, and blacks are more segregated from native-born non-Hispanic whites than are the U.S.-born of these groups. The patterns for Hispanics and Asians can be explained by the average characteristics of the foreign-born that are generally associated with higher levels of segregation, such as lower levels of income, English language ability, and home ownership. We also find that immigrants who have been in the United States for longer periods are generally less segregated than new arrivals, and once again, much of this difference can be attributed to the characteristics of immigrants. However, patterns also vary across groups. Levels of segregation are much higher for black immigrants than for Asian, Hispanic, and white immigrants. In addition, because black immigrants are, on average, of higher socioeconomic status than native-born blacks, such characteristics do not help explain their very high levels of segregation.     

Presidnt Jiang Zemin on Population,Resources and Environment

ＰｒｅｓｉｄｎｔＪｉａｎｇＺｅｍｉｎｏｎＰｏｐｕｌａｔｉｏｎ，ＲｅｓｏｕｒｃｅｓａｎｄＥｎｖｉｒｏｎｍｅｎｔ（ＥｘｃｅｒｐｔｓｆｒｏｍｔｈｅｒｅｐｏｒｔｄｅｌｉｖｅｒｅｄｂｙＪｉａｎｇＺｅｍｉｎ，Ｇｅｎ┐ｅｒａｌ┐ＳｅｃｒｅｔａｒｙｏｆｔｈｅＣｈｉｎ...     

Coming to stay: An analysis of the U.S. Census question on immigrants’ year of arrival

Using the New Immigrant Survey Pilot, we compare answers to the census question on year of arrival in the United States with answers to questions about the dates and durations of earlier U.S. trips. We show that the year identified by the census does not correspond to the year of either the first or the last U.S. trip. Because many immigrants enter and leave the United States several times before becoming legal immigrants, the census question produces estimates of U.S. experience that are quite different from those produced by direct questions about trip durations.     

Social indicators of marital instability,U.S.A., 1920–1969

A social indicators model which included demographic variables (birth rate and aged child ratio), economic variable (unemployment) and marriage rates (control variable) was utilized in explaining changes in divorce rates over time. Analysis of time series data for two distinctive periods in the U.S.A. (1920–1940 and 1946–1969) revealed the following significant results:

1. Demographic changes in the age structure of the population while controlling for marriage rates explains significantly larger amounts of the variance in marital instability than economic changes alone (unemployment).
2. In the post-World War II era unemployment was not found to be a statistically significant predictor of marital instability when control for demographic changes were established.
3. In the post-World War II era marriage rates appear to be a significant predictor of divorce rates when control for demographic changes were maintained.
4. In the post-World War II era marriage rates were found to be more sensitive to changes in economic conditions than marital instability (divorce rate).

     

The Benefits of Educational Attainment for U.S. Adult Mortality: Are they Contingent on the Broader Environment?

The growing recognition that educational attainment is one of the strongest preventive factors for adult health and longevity has fueled an interest in educational attainment as a population health strategy. However, less attention has been given to identifying social, economic, and behavioral resources that may moderate the health and longevity benefits of education. We draw on theories of resource substitution and multiplication to examine the extent to which the education–mortality association is contingent on other resources (marriage, employment, income, healthy lifestyles). We use data on adults aged 30–84 in the 1997–2006 National Health Interview Survey Linked Mortality File and estimate discrete-time event history models stratified by gender (N = 146,558; deaths = 10,399). We find that the mortality benefits of education are generally largest for adults—especially women—who have other resources such as employment and marriage, supporting the theory of resource multiplication. Nonetheless, our results also imply that other resources can potentially attenuate the mortality disadvantages (advantages) associated with low (high) levels of education. The findings suggest that efforts to improve population health and longevity by raising education levels should be augmented with strategies that assure widespread access to social, economic, and behavioral resources.