Table 1.

Demographic characteristics of the study population.

Characteristic	na	% (95% CI)
SARS-CoV-2 Status
Negative	285,675	59.22 (59.08–59.36)
Positive	196,738	40.78 (40.64–40.92)
Sex
Female	238,242	49.39 (49.24–49.53)
Male	244,171	50.61 (50.47–50.76)
Age
Median ± IQR	36 ± 20	---
<20	22,798	4.72 (4.67–4.79)
20−29	122,624	25.42 (25.30–25.54)
30−39	132,812	27.53 (27.40–27.66)
40−49	93,726	19.43 (19.32–19.54)
50−59	67,108	13.91 (13.81–14.01)
>60	43,345	8.98 (8.90–9.07)
Pregnant womenb
No	227,397	97.00 (96.93–97.07)
Yes	7038	3.00 (2.93–3.07)
Contact with COVID-19 patientc
No	204,602	46.65 (46.50–46.80)
Yes	234,004	53.35 (53.20–53.50)
Relationship COVID-19 patientd
Family	131,965	56.39 (56.19–56.60)
Co-worker	68,782	29.39 (29.21–29.58)
Friend	23,983	10.25 (10.13–10.37)
Other	20,112	8.59 (8.48–8.71)
Social securitye
No	87,009	18.83 (17.93–18.14)
Yes	375,106	81.17 (81.06–81.28)
Non-communicable diseases
Hypertension	27,803	5.76 (5.70–5.83)
Diabetes	23,873	4.95 (4.89–5.01)
Obesity	7853	1.63 (1.59–1.66)
Smoking
Non-Smokers	400,998	83.12 (83.02–83.23)
Passive smokers	32,272	6.69 (6.62–6.76)
Smokers	49,143	10.19 (10.10–10.27)
Influenza Vaccinationf
No	349,094	75.78 (75.66–75.91)
Yes	111,541	24.21 (24.09–24.34)

Note: Age groups was defined by decades, with the exception of <20 and >60.

^aTotal n = 482,413.

^bMissing values = 3,807.

^cMissing values = 43,807.

^dIt should be noted that some categories can be counted more than once.

^eMissing values = 20,298.

^fMissing values = 21,778.