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 23 May 2003.
All research outputs
#24,360,769
of 33,937,515 outputs
Outputs from Proceedings of the National Academy of Sciences of the United States of America
#107,774
of 117,779 outputs
Outputs of similar age
#71,550
of 77,376 outputs
Outputs of similar age from Proceedings of the National Academy of Sciences of the United States of America
#493
of 542 outputs
Altmetric has tracked 33,937,515 research outputs across all sources so far. This one is in the 19th percentile – i.e., 19% of other outputs scored the same or lower than it.
So far Altmetric has tracked 117,779 research outputs from this source. They typically receive a lot more attention than average, with a mean Attention Score of 39.9. This one is in the 5th percentile – i.e., 5% 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 77,376 tracked outputs that were published within six weeks on either side of this one in any source. This one is in the 4th percentile – i.e., 4% of its contemporaries scored the same or lower than it.
We're also able to compare this research output to 542 others from the same source and published within six weeks on either side of this one. This one is in the 3rd percentile – i.e., 3% of its contemporaries scored the same or lower than it.
