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. 2022 Feb 9;17(2):e0261980. doi: 10.1371/journal.pone.0261980

Table 1. Characteristics of the participants.

Placebo
n = 65
HCQ
n = 62
All subjects
n = 127
Age (median (interquartile range)) 31.9 (27.2–43.7) 31.0 (26.4–39) 31.1 (26.6–40.3)
Male gender (%) 23 (35.4) 33 (57.4) 56 (42.52)
Days of exposition to COVID-19 (median (interquartile range)) 47 (28–64) 40 (26–64) 41 (26–64)
Profession (% physicians or nurses) 33 (50.8) 31 (50) 64 (50.39)
Number with night shifts (%) 17 (26.2) 24 (35.5) 39 (30.7)
Working at another medical center (%) 18 (27.7) 16 (25.8) 34 (26.8)
Presence of concomitant disease (%) 7 (10.8) 9 (14.5) 16 (12.6)
Previous or active smoking (%) 23 (35.4) 20 (32.3) 43 (33.9)
Number reporting > 1 alcohol drink a week (%) 8 (12.5) 12 (19.4) 20 (15.9)
Body mass index (kg/m2) (mean (standard deviation)) 27.2 (4.6) 26.7 (3.9) 27.0 (4.3)
Obesity (%) 15 (23.1) 9 (11.3) 24 (18.5)
Use of other medications (%) 30 (46.2) 43 (69.4) 73 (57.5)