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X Demographics
Mendeley readers
Attention Score in Context
| Title |
Reproduction in the Baka pygmies and drop in their fertility with the arrival of alcohol
|
|---|---|
| Published in |
Proceedings of the National Academy of Sciences of the United States of America, June 2018
|
| DOI | 10.1073/pnas.1719637115 |
| Pubmed ID | |
| Authors |
Fernando V. Ramirez Rozzi |
| Abstract |
To understand the diversity of human growth and development from an evolutionary point of view, there is an urgent need to characterize the life-history variables of vanishing forager societies. The small body size of the Baka pygmies is the outcome of a low growth rate during infancy. While the ages at sexual maturity, menarche, and first delivery are similar to those in other populations, fertility aspects are unknown. In the Le Bosquet district in Cameroon, thanks to systematic birth records kept from 1980 onwards, we were able to assign ages to individuals with certainty. This study, based on chronological records and on data collected from 2007 to 2017, presents life-history variables related to fertility and mortality among the Baka pygmies: total fertility rate, age-specific fertility rate, completed family size, reproductive span, age at menopause, and infant and juvenile mortality. The Baka present low infant and juvenile mortality, and their fertility pattern differs from that of other forager societies in the higher age-specific fertility rates found in the two lower age classes. Future studies will need to assess whether this particular pattern and the short interbirth interval are related to highly cooperative childrearing, which in the Baka is associated with slow growth. The fertility rate has fallen drastically since 2011, and this matches the arrival of cheap alcohol in the community. Our data provide a first-hand record of the impact of alcohol on fertility in a hunter-gatherer society which appears to be seriously compromising the survival of the Baka. |
X Demographics
The data shown below were collected from the profiles of 19 X users who shared this research output. Click here to find out more about how the information was compiled.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| France | 4 | 21% |
| United States | 3 | 16% |
| Pakistan | 1 | 5% |
| Germany | 1 | 5% |
| Unknown | 10 | 53% |
Demographic breakdown
| Type | Count | As % |
|---|---|---|
| Members of the public | 15 | 79% |
| Scientists | 3 | 16% |
| Science communicators (journalists, bloggers, editors) | 1 | 5% |
Mendeley readers
The data shown below were compiled from readership statistics for 50 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Unknown | 50 | 100% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Researcher | 7 | 14% |
| Student > Bachelor | 7 | 14% |
| Student > Master | 6 | 12% |
| Student > Ph. D. Student | 6 | 12% |
| Student > Doctoral Student | 3 | 6% |
| Other | 9 | 18% |
| Unknown | 12 | 24% |
| Readers by discipline | Count | As % |
|---|---|---|
| Agricultural and Biological Sciences | 8 | 16% |
| Nursing and Health Professions | 7 | 14% |
| Medicine and Dentistry | 6 | 12% |
| Biochemistry, Genetics and Molecular Biology | 3 | 6% |
| Psychology | 3 | 6% |
| Other | 11 | 22% |
| Unknown | 12 | 24% |
Attention Score in Context
This research output has an Altmetric Attention Score of 17. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 12 November 2021.
All research outputs
#2,186,440
of 25,732,188 outputs
Outputs from Proceedings of the National Academy of Sciences of the United States of America
#26,035
of 103,628 outputs
Outputs of similar age
#43,718
of 342,732 outputs
Outputs of similar age from Proceedings of the National Academy of Sciences of the United States of America
#463
of 960 outputs
Altmetric has tracked 25,732,188 research outputs across all sources so far. Compared to these this one has done particularly well and is in the 91st percentile: it's in the top 10% of all research outputs ever tracked by Altmetric.
So far Altmetric has tracked 103,628 research outputs from this source. They typically receive a lot more attention than average, with a mean Attention Score of 39.6. This one has gotten more attention than average, scoring higher than 74% of its peers.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 342,732 tracked outputs that were published within six weeks on either side of this one in any source. This one has done well, scoring higher than 87% of its contemporaries.
We're also able to compare this research output to 960 others from the same source and published within six weeks on either side of this one. This one has gotten more attention than average, scoring higher than 51% of its contemporaries.