Cough

n (%)

Phlegm,

n (%)

Dyspnea

n (%)

Chest pain

n (%)

Any pulmonary symptom n (%)

SaO₂<95%

n (%)

All workers (52)

4 (7.7)

1 (2)

2 (3.8)

3 (5.7)

6 (11.5)

4 (7.7)

Type of work

Production (n = 30)

4 (13)

1 (3.2)

1 (3.2)

1 (3.2)

4 (13)

2 (6.5)

Administration (n = 22)

0

0

1 (4.5)

2 (9)

2 (9)

2 (9)

Age

<42 years (n = 25)

2 (8)

1 (4)

1 (4)

3 (12)

4 (16)

2 (8)

≥42 years (n = 27)

2 (7)

0

1 (3.7)

0

2 (7)

2 (7.4)

Duration of employment

<10 years (n = 23)

2 (8.6)

1 (4.3)

1 (4.3)

3 (13)

4 (17.4)

1 (4.3)

≥10 years (n = 29)

2 (7)

0

1 (3.5)

0

2 (7)

3 (10)

Hypertension

Yes (n = 12)

0

0

1 (8.3)

0

1 (8.3)

2 (16.6)

No (n = 40)

4 (10)

0

1 (2.5)

3 (7.5)

5 (12.5)

2 (5)

IMC

<25 (n = 25)

3 (12)

1 (4)

1 (4)

2 (8)

5 (20)

3 (12)

>25 (n = 27)

1 (3.7)

0

1 (3.7)

1 (3.7)

1 (3.7)

1 (3.7)