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More twins expected in low-income countries with later maternal ages at birth and population growth.
Hum Reprod
December 2024
Laboratory of Fertility and Well-Being, Max Planck Institute for Demographic Research, Rostock, Germany.
Study Question: How are the changing maternal age structure and population growth expected to shape future twinning rates in low-income countries?
Summary Answer: With maternal age at birth projected to shift toward older ages, twinning rates are also estimated to increase in most low-income countries by 2050 and even more by 2100.
What Is Known Already: Many of the sub-Saharan African and South Asian countries are undergoing, and projected to further experience, the shift of maternal age at birth to older ages. Advanced maternal age is a well-established predictor of multiple births at the individual level, but currently, it is unknown how the changes in maternal age distribution are associated with the changes in twinning rates at the population level in low-income countries.
Model-based estimates of age-structured SARS-CoV-2 epidemiology in households.
BMC Public Health
October 2024
Division of Epidemiology, Department of Internal Medicine, University of Utah School of Medicine, Salt Lake City, UT, United States of America.
Background: Understanding how infectious disease transmission varies from person to person, including associations with age and contact behavior, can help design effective control strategies. Within households, transmission may be highly variable because of differing transmission risks by age, household size, and individual contagiousness. Our aim was to disentangle those factors by fitting mathematical models to SARS-CoV-2 household survey and serologic data.
View Article and Find Full Text PDFMyctophids are one of the most diverse and abundant fish families in the mesopelagic zone, making them a key component in the marine pelagic community. In the North Atlantic, (glacier lantern fish) is considered the most abundant myctophid north of 35° N, yet some regions within its extensive range lack information on its basic biological parameters. We investigated the growth and described the distribution of in Icelandic waters, including the southern continental shelf, Iceland Basin, and Irminger Sea.
View Article and Find Full Text PDFGrandparenting and life satisfaction of the aged in rural areas: A study in Upazila of Narail District.
J Women Aging
January 2025
Sociology Discipline, Social Science School, Khulna University, Khulna, Bangladesh.
In rural Bangladesh, older adults generally enjoy their role as grandparents and spend their leisure and inactive periods (non-involvement in income-generating activities) with their grandchildren. The life satisfaction of the older adults partly lies in their role-playing as grandparents. The aim of this study was to examine the impact of caring for grandchildren on the life satisfaction of the older adults in rural areas.
View Article and Find Full Text PDFHow does chronic disease influence subjective life expectancy among middle-aged and older adults? Evidence from the China Health and Retirement Longitudinal Study (CHARLS) 2018 cross-sectional data.
Public Health Nurs
November 2024
School of Health Economics and Management, Nanjing University of Chinese Medicine, Nanjing, China.
Article Synopsis
- * Utilizing data from the China Health and Retirement Longitudinal Study (CHARLS), researchers found that chronic diseases are associated with a 36.2% reduction in the likelihood of having a high life expectancy.
- * The study also revealed that the impact of chronic diseases on SLE varies by age, with a strong correlation for those aged 45-79, but no significant correlation in individuals aged 80 and above.
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