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Table 1 Distribution of baseline characteristics among the study participants, and distribution of SARS-CoV- 2 serostatus for each level of the factors

From: Impact of baseline SARS-CoV-2 antibody status on syndromic surveillance and the risk of subsequent COVID-19—a prospective multicenter cohort study

 

Total N

Seropositive

(N and %)

Seronegative

(N and %)

N = 4812

N = 144

N = 4668

Gender

 Female

3759

108 (2.9%)

3651 (97.1%)

 Male

1009

36 (3.6%)

973 (96.4%)

 Undetermined/missing

44

  

Age in years, median (IQR)

38.9 (30.1–49.8)

35.8 (27.4–45.1)

39.0 (30.3–49.8)

BMI (kg m−2 kg/m2), median (IQR)

23.4 (21.3–26.1)

24.0 (22.0–26.7)

23.4 (21.2–26.1)

Comorbidity

 No (none mentioned)

3079

86 (2.8%)

2993 (97.2%)

 Yes

1715

58 (3.4%)

1657 (96.6%)

 Missing

18

  

Profession

 Nurse or medical assistant

2279

88 (3.9%)

2191 (96.1%)

 Physician

809

13 (1.6%)

796 (98.4%)

 Other

1493

31 (2.1%)

1462 (97.9%)

 None/missing

231

  

Speciality

 Internal medicine

1025

34 (3.3%)

991 (96.7%)

 Surgery/orthopedics

466

15 (3.2%)

451 (96.8%)

 Intensive care

325

8 (2.5%)

317 (97.5%)

 Emergency department

267

9 (3.4%)

258 (96.6%)

 Other

611

15 (2.5%)

594 (97.5%)

 None/missing

2121

  

Patient contact (medical or administration)

 No

771

12 (1.6%)

759 (98.4%)

 Yes

3755

119 (3.2%)

3636 (96.8%)

 Missing

286

  

Involved in AGP

 No

3307

90 (2.7%)

3217 (97.3%)

 Yes

1487

54 (3.6%)

1433 (96.4%)

 Missing

18

  
  1. Abbreviations: IQR interquartile range, BMI body mass index, AGP aerosol-generating procedure