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Results for “Family Size, Expected--changes”

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PubMed1984

A longitudinal study of family size expectations among young blacks and whites.

This study is concerned with the stability of family size expectations and the direction of change in such expectations among young people in the United States. "In the...study, 437 low-income respondents, both black and white, male and female, answered a question on expected family size both at high school age and four years later. Respondents varied in their consistency with 78% of those first naming one or two children, but only 9% of those expecting no children, naming the same number at the second interview. Consistency was also found to vary by sex and race. Support was found for the hypothesis that change in expectations is related to the proximity of parenthood decision."

Black or African American↗
PubMedDate not supplied

Family size intentions and socioeconomic status in Singapore, 1974-1981.

Singapore has in recent years undergone a tremendous fertility decline that has affected couples at all socioeconomic levels. Using representative biographical sketches, this article presents the results of a panel study on family planning intentions and behavior among 45 young Chinese Singaporean couples. The couples, ranked as average or affluent working-class, or middle-class, were first interviewed in 1974-76 and were followed up in 1981. The study compares early childbearing intentions with actual childbearing behavior, examining the motivation for childbearing by socioeconomic group and highlighting the differences found. The follow-up interviews reveal that, on average, all couples in the sample bore 0.4 fewer children than originally intended. The motivation for changed childbearing intentions, however, differed according to socioeconomic status and the perceived role that children play in the family economy.

Adult↗
PubMed2000

Vice president Al Gore's health care agenda and the utilization of medical services: An empirical analysis.

OBJECTIVE: To estimate the impact of Vice President Al Gore's healthcare agenda on the utilization of physician and hospital services among 4 uninsured target populations: parents of publicly insured children; near elderly adults, ages 55-64; employed adults with disabilities; and adults employed in small firms or self-employed. METHODS: From the 1993 National Health Interview Survey, we select 4 representative samples of uninsured adults, ages 18-64, corresponding to the target groups described in Gore's healthcare agenda. For each adult in these samples, we estimate the change in medical service utilization caused by becoming insured using results from Craig and Ko.[1] The weighted average of these estimates represents the expected change in medical service utilization attributable to insurance. RESULTS: The increase in the utilization caused by insurance depends on the target group and the service in question. The increase in utilization of physician visits is 16% among parents of publicly insured children, 37% among the near elderly, 8% among the employed, disabled adults, and 21% among the self-employed. This effect is small compared with the increase in surgical procedures (31%, 110%, 316%, and 101%, respectively). However, given the size of the US healthcare system, this amounts to about a 0.5% increase in the production of medical services. Even if a universal coverage plan were instated in place of Gore's incremental coverage plan, production would increase by about 2%. CONCLUSIONS: Points 2 through 5 of Vice President Al Gore's healthcare agenda have an impact on the utilization of medical care by the 4 target populations. However, this impact varies by service and population, and its system-wide impact on the production of care is minor.

Adolescent↗
PubMedDate not supplied

A new method of quantifying glutathione levels in freshly isolated single superfused rat cardiomyocytes.

INTRODUCTION: Glutathione (GSH) is an important antioxidant in the heart whose content changes during cardiac insults. However, there are currently no methods for continuously monitoring free cytoplasmic GSH levels in single isolated and superfused cardiomyocytes exposed to normal and pathological conditions. METHODS: GSH was measured using CellTracker Blue CMAC (Molecular Probes), a member of a new family of thiol-sensitive dyes. The fluorescence of 5 microM CellTracker Blue CMAC was measured in various solutions containing glutathione-S-transferase and in freshly isolated single superfused cardiomyocytes using an inverted fluorescence microscope. The cardiomyocytes were isolated by standard procedures and loaded with either CellTracker Blue CMAC or monochlorobimane by 15 min of shaking incubation in the dark at room temperature followed by centrifugation with resuspension of the cells in dye-free media. Cell volume was calculated from the 3H2O and [14C]sucrose space. RESULTS: CellTracker Blue CMAC fluorescence was linearly proportional to 0-100 microM GSH, as described by the equation: Y = 182.2 (X) + 681.6 (r2 = .99, P < .001). Fluorescence was not affected by changing the glutathione-S-transferase level, the calcium concentration, or the pH, neither was the fluorescence quenched by H2O2 or cyanide. Exposure of freshly isolated single superfused cardiomyocytes to oxidative stress in the presence of 0-1 mM H2O2 caused a progressive decrease in cellular GSH. In contrast, brief exposure to metabolic inhibition in the presence of 2.5 mM NaCN evoked a significant increase in cardiomyocyte GSH followed by a return to control levels during washoff. In comparison to monochlorobimane, cells loaded with CellTracker Blue CMAC gave a stronger signal with better cellular retention of the probe. DISCUSSION: These results suggest that CellTracker Blue CMAC fluorescence will be a good tool for measuring GSH in freshly isolated single superfused cardiomyocytes because it shows the expected changes to oxidative stress and metabolic inhibition, and is reversible.

Animals↗