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. 2021 May 12;16:32. doi: 10.1186/s13027-021-00375-2

Table 1.

Demographic data of previously infected and not previously infected cohorts of healthcare providers

Male (age) Female (age) Total (mean ± SD)
n (mean ± SD)
Previously infected subjects 10 (55.2 ± 9.5) 25 (45.2 ± 8.4) 35 (48.1 ± 9.7)
Not previously infected subjects 84 (49.7 ± 9.7) 74 (45.2 ± 10.0) 158 (47.6 ± 10.0)
Total 94 99 193

Previously infected subjects = subjects infected to SARS-CoV-2

Not previously infected subjects = subjects not infected to SARS-CoV-2

n = number of subjects

mean = mean age

SD standard deviation