Table 2 Characteristics of analyzed preprint articles
Variable (N of denominator) | N (%)a |
|---|---|
Preprint server (N = 1088) | |
medRxiv | 842 (77) |
bioRxiv | 246 (23) |
Country in the author affiliation (N = 1088) | |
China | 563 (52) |
USA | 298 (27) |
UK | 92 (8.4) |
Italy | 51 (5.3) |
Hong Kong | 43 (3.9) |
Other | 41 (3.7) |
Self-reported study design (N = 494) | |
Modelling | 306 (62) |
Retrospective study | 59 (12) |
Cross-sectional study | 35 (7.1) |
Cohort study | 22 (4.4) |
Systematic review with or without meta-analysis | 21 (4.3) |
Other | 51 (10) |
Thematic classification (N = 1088) | |
Transmission/risk/prevalence | 470 (43) |
Health impacts of COVID-19 | 163 (15) |
Genetics/biology | 127 (12) |
Diagnosis | 101 (9.2) |
Treatment development | 84 (7.7) |
Other | 137 (13) |
Country of study funders (N = 681) | |
China | 312 (46) |
USA | 107 (16) |
UK | 14 (2) |
Japan | 13 (1.9) |
China and USA | 11 (1.6) |
Other | 224 (33) |