Search PubMed⌕ Search

SEARCH · Search PubMed

Results for “Demographic Analysis”

Search indexed PubMed citations on genomics, clinical trials, systematic reviews and public health. Explore titles, authors and supplied subject terms, then open the PubMed record.

Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.

At least 127 records · Page 7Linked to original sources
PubMed1993

Who goes to after-hours clinics? Demographic analysis of an after-hours clinic.

This study examines an after-hours clinic developed by family physicians of a major community hospital. The physicians have notable linkages with the hospital, and most of the patients come from the practices of the physicians on staff. Hospital-linked clinics of this type could have an increasingly important role as mechanisms of health care delivery continue to evolve.

Adolescent↗
PubMed1990

The loglinear model as a tool for the analysis of demographic data.

The author discusses the use of loglinear models in demographic analysis, particularly with regard to the analysis of contingency tables. Their use is illustrated using data from the 1980 World Fertility Survey for Sudan to analyze the determinants of fifth-birth intervals. The results show "the ability of the technique to improve our understanding of the mechanism of fertility differentials using individual--instead of aggregate--data. It has shown how each variable affects the process when all other variables are held constant."

Africa↗
PubMed1991

Problem of weights in the analysis of demographic phenomena in territorial arrangement.

The author attempts to eliminate the influence of the size of a territorial unit on the results of demographic analysis, using data for Poland as an illustration. She concludes that "the inclusion of weights in statistical analysis allows us to eliminate the impact of the sizes of studied units on the values of counted parameters as well as on the measures of correlation and regression. The existence of a close connection between the results obtained and the sizes of the studied groups within the same population should be always taken into account."

Developed Countries↗
PubMed2024

Next-generation phylogeography reveals unanticipated population history and climate and human impacts on the endangered floodplain bitterling (Acheilognathus longipinnis).

BACKGROUND: Floodplains harbor highly biodiverse ecosystems, which have been strongly affected by both past climate change and by recent human activities, resulting in a high prevalence of many endangered species in these habitats. Understanding the history of floodplain species over a wide range of timescales can contribute to effective conservation planning. We reconstructed the population formation history of the Itasenpara bitterling Acheilognathus longipinnis, an endangered floodplain fish species in Japan, over a broad timescale based on phylogenetic analysis, demographic modeling, and historical demographic analysis using mitogenome and whole-genome sequences. A genome sequence was newly assembled as a reference for the resequencing analysis. This bitterling is distributed in three plains separated by high mountain ranges and exhibits ecological characteristics well adapted to floodplain environments. RESULTS: Our analyses revealed an unexpected population branching pattern, gene flow, and timing of the differentiation that occurred within a few hundred thousand years, i.e., long after the mountain uplift that was assumed to be the primary geological cause of the population differentiation. The analyses also showed that all local populations experienced a severe decline during the last glacial and post-glacial periods. CONCLUSIONS: Our results suggest that the floodplain bitterling was able to disperse through unknown routes after mountain uplift and that its populations were strongly influenced by climatic and geographic changes in glacial-interglacial cycles and subsequent human activities, probably related to its floodplain-dependent ecology. The genomic data highlight the unanticipated distribution process of this species and the magnitude of the impact of human activities, with important implications for its conservation.

Endangered Species↗
PubMedDate not supplied

[Analysis of the demographic situation in the Saratov region].

Demographic analysis of the population of the Saratov region in 1991-1995 is presented. The values of mortality, birth rate, and migration and relationships between them are analyzed. Basic trends and regularities of population mortality are discussed. Special attention is paid to causes of death in the Saratov district and the time course of the relevant mortality coefficients.

Birth Rate↗