Table 2.
Mean ± SD | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | |
---|---|---|---|---|---|---|---|---|---|---|---|
News | 0.96 ± 8.50 | 145 | 167 | 106 | 551 | 783 | 209 | 358 | 155 | 623 | 870 |
Blog | 0.09 ± 0.74 | 23 | 26 | 27 | 84 | 33 | 15 | 32 | 13 | 85 | 52 |
Policy | 0.05 ± 0.44 | 20 | 26 | 26 | 36 | 31 | 5 | 8 | 7 | 4 | 5 |
Patent | 0.07 ± 0.57 | 54 | 35 | 32 | 12 | 11 | 8 | 0 | 0 | 4 | 4 |
8.53 ± 213.40 | 450 | 792 | 927 | 9811 | 2943 | 1736 | 2410 | 2821 | 18,266 | 6615 | |
Peer review | 0.01 ± 0.12 | 3 | 3 | 1 | 1 | 1 | 1 | 0 | 4 | 9 | 3 |
Weibo * | 0.01 ± 0.50 | 0 | 2 | 7 | 44 | 0 | 0 | 0 | 0 | 0 | 0 |
Facebook ** | 0.44 ± 7.20 | 161 | 151 | 130 | 878 | 501 | 180 | 143 | 79 | 109 | 96 |
Wikipedia | 0.05 ± 0.38 | 23 | 35 | 23 | 32 | 13 | 18 | 9 | 5 | 14 | 11 |
Google+ *** | 0.06 ± 1.96 | 12 | 9 | 14 | 195 | 46 | 10 | 15 | 0 | 0 | 0 |
LinkedIn † | 0.00 ± 0.00 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
0.02 ± 0.56 | 10 | 3 | 3 | 53 | 12 | 12 | 6 | 3 | 24 | 4 | |
Pinterest †† | 0.00 ± 0.01 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
F1000 | 0.01 ± 0.12 | 17 | 25 | 15 | 5 | 6 | 1 | 5 | 8 | 2 | 4 |
Q&A | 0.00 ± 0.03 | 0 | 0 | 0 | 3 | 0 | 0 | 0 | 0 | 0 | 0 |
Video | 0.02 ± 0.25 | 4 | 9 | 9 | 23 | 15 | 6 | 2 | 1 | 18 | 7 |
Total | 10.34 ± 222.40 | 922 | 1283 | 1320 | 11,728 | 4395 | 2201 | 2988 | 3096 | 19,158 | 7671 |
* not trackable since 2015 ** only a curated list of public Pages *** not trackable since 2019. † not trackable since 2014. †† not trackable since 2013.