Table 1.
A comparison of productivity trends by half-month intervals of COVID-19–related publication, preprint, and Twitter activity from December 2019 through May 2020.
| Informational sources | December 2019 | January 2020 | February 2020 | March 2020 | April 2020 | May 2020 | ||||||||||||
|
|
1-15 | 16-31 | 1-15 | 16-31 | 1-15 | 16-29 | 1-15 | 16-31 | 1-15 | 16-30 | 1-15 | 16-31 | ||||||
| Publicationsa, n | 0 | 0 | 0 | 34 | 135 | 180 | 342 | 588 | 1196 | 1586 | 1561 | 1541 | ||||||
| Preprintsb, n | 0 | 0 | 0 | 35 | 71 | 181 | 217 | 506 | 633 | 922 | 1051 | 1086 | ||||||
| Tweetsc, n | 0 | 0 | 0 | 245 | 592 | 815 | 13797 | 20660 | 13845 | 9636 | 7399 | 6090 | ||||||
|
|
Impressions | 0 | 0 | 0 | 1,439,197 | 1,809,224 | 180,594 | 30,061,305 | 44,640,303 | 33,351,337 | 29,411,077 | 22,536,326 | 41,900,257 | |||||
|
|
Impressions per tweet | 0 | 0 | 0 | 5874 | 3056 | 2320 | 2179 | 2179 | 2409 | 3052 | 3046 | 6880 | |||||
|
|
Unique users | 0 | 0 | 0 | 165 | 362 | 552 | 9727 | 13034 | 8210 | 5647 | 3759 | 3153 | |||||
|
|
Tweets per user | 0 | 0 | 0 | 1.48 | 1.64 | 1.48 | 1.42 | 1.59 | 1.69 | 1.71 | 1.97 | 1.93 | |||||
aPublications indexed in PubMed–NCBI database.
bPreprints located in the medRxiv and bioRxiv repositories.
cTweets and associated variables extracted using Symplur Signals search engine.