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Table 1 Demographics and PCR testing for the participants according to their disease severity

From: Kinetics of humoral immune response over 17 months of COVID-19 pandemic in a large cohort of healthcare workers in Spain: the ProHEpiC-19 study

 

Negative at baseline and during follow-up

N = 295 (38.4)

Asymptomatic

N = 73 (9.5)

Mild-moderate illness

N = 363 (47.2)

Severe-critical illness

N = 38 (4.9)

Total

N = 769

Age (years)

46 (38.5–56) [19–66]

45 (31–52) [19–66]

45 (35–53) [18–66]

56.5 (50–61) [30–66]

46 (36–54) [18–66]

Gender assigned at birth

     

 Female

238 (80.7)

48 (65.7)

274 (75.5)

18 (47.4)

578 (75.2)

 Male

57 (19.3)

25 (34.3)

89 (24.5)

20 (52.6)

191 (24.8)

Profession

     

 Doctor

112 (38.0)

9 (12.3)

76 (20.9)

13 (34.2)

210 (27.3)

 Nurse

95 (32.2)

19 (26.0)

96 (26.4)

10 (26.3)

220 (28.6)

 Nurse assistant

13 (4.41)

9 (12.3)

34 (9.37)

4 (10.5)

60 (7.80)

 Others

75 (25.4)

36 (49.3)

157 (43.3)

11 (28.9)

279 (36.3)

Highest educational level attained

   

 Higher level vocational school

34 (11.8)

6 (8.57)

32 (9.22)

1 (2.78)

73 (9.84)

 University

27 (9.34)

29 (41.4)

94 (27.1)

10 (27.8)

160 (21.6)

 Others

228 (78.9)

35 (50.0)

221 (63.7)

25 (69.4)

509 (68.6)

 NA

6

3

16

2

27

Marital status

     

 Single

44 (15.3)

16 (25.0)

63 (18.2)

3 (8.33)

126 (17.1)

 Married/cohabitation

196 (68.1)

42 (65.6)

255 (73.5)

29 (80.6)

522 (71.0)

 Divorced

43 (14.9)

3 (4.69)

22 (6.34)

3 (8.33)

71 (9.66)

 Widow

5 (1.74)

3 (4.69)

7 (2.02)

1 (2.78)

16 (2.18)

 NA

7

9

16

2

34

Nationality

     

 Spain

270 (95.4)

57 (90.5)

291 (87.7)

35 (100)

653 (91.6)

 European Union

1 (0.35)

0 (0.00)

1 (0.30)

0 (0.00)

2 (0.28)

 South America

7 (2.47)

1 (1.59)

23 (6.93)

0 (0.00)

31 (4.35)

 Others

5 (1.77)

5 (7.94)

17 (5.12)

0 (0.00)

27 (3.79)

 NA

12

10

31

3

59

Number of symptoms at baseline

–

0 (0) [0–0]

7 (4–9) [1–17]

9 (8–11) [2–17]

6 (2–9) [0–17] (*)

Days of follow-up

424 (269.5–481) [13–545]

302 (189–365)

[14–527]

350 (271–434.5)

[13–537]

438.5 (357.8–475.5)

[156–505]

363 (269–464)

[13–545]

Days since first positive diagnosis test

–

302 (220.5–374.5)

[14–602]

365 (287–429) [28–617]

492 (341.8–540.8) [28–582]

370 (286–510) (*) [14–617]

 ≥ 1 positive PCR during follow-up

0 (0)

20 (27.4)

118 (32.5)

2 (5.3)

204 (26.5)

  1. Categoric variables are described as N (%), and numeric variables as median (IQR) [min, max]
  2. NA not available
  3. In categories with NA, percentages were calculated excluding these answers. Diagnosis was made based on a positive PCR or IgM(N) or IgG(N) test. *Excludes negative participants. “Others” category in “Profession” includes physiotherapists, management and administration staff, and social workers; “Others” category in “Highest educational level attained” includes primary (5–12 years old) and secondary education (12–16 years old); and “Others” category in “Nationality” includes participants from Morocco, Senegal and Russia
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BMC Infectious Diseases

ISSN: 1471-2334

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