This research output has an Altmetric Attention Score of 1. 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 14 August 2025.
All research outputs
#27,752,617
of 34,393,205 outputs
Outputs from Proceedings of the National Academy of Sciences of the United States of America
#113,121
of 118,975 outputs
Outputs of similar age
#231,920
of 349,691 outputs
Outputs of similar age from Proceedings of the National Academy of Sciences of the United States of America
#817
of 903 outputs
Altmetric has tracked 34,393,205 research outputs across all sources so far. This one is in the 16th percentile – i.e., 16% of other outputs scored the same or lower than it.
So far Altmetric has tracked 118,975 research outputs from this source. They typically receive a lot more attention than average, with a mean Attention Score of 40.1. This one is in the 4th percentile – i.e., 4% of its peers scored the same or lower than it.
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 349,691 tracked outputs that were published within six weeks on either side of this one in any source. This one is in the 27th percentile – i.e., 27% of its contemporaries scored the same or lower than it.
We're also able to compare this research output to 903 others from the same source and published within six weeks on either side of this one. This one is in the 7th percentile – i.e., 7% of its contemporaries scored the same or lower than it.
