Table 1.

Study characteristics

Characteristic	Value
No (%) of studies registered	373 (88.8)
No (%) of studies by publication status:
Preprint	96 (22.9)
Published	278 (66.1)
Unpublished	46 (11.0)
Median (IQR) No of patients	101 (50-238)
No (%) of studies by country:
United States	73 (17.4)
Iran	67 (16.0)
Brazil	52 (12.4)
India	43 (10.2)
China	41 (10.0)
No (%) of studies by intensity of care:
Outpatient	86 (20.5)
Inpatient	312 (74.3)
ICU	24 (5.7)
No (%) of studies by illness severity:
Mild/moderate	89 (21.2)
Severe/critical	42 (10.0)
Median (IQR) percentage of patients mechanically ventilated at baseline	2.8 (0.0-33.0)