Table 5.

Risk factors for SARS-CoV-2 infection: results of univariate and multivariate* analysis

	SARS-CoV-2 infection n (%)	Crude OR (95% CI)	p-value	Adjusted OR (95% CI)	p-value
Gender			0.208		0.076
Men	50 (35.5)	0.75 [0.49–1.14]		0.63 [0.38–1.5]
Women	121 (42.2)	1		1
Age class (years)			0.029		0.019
≥40	103 (45.2)	1.57 [1.06–2.33]		1.65 [1.08–2.51]
<40	68 (34.3)	1		1
Occupation			0.045		0.014
Laborers	45 (50.0)	2.13 [1.24–3.67]	0.006	2.67 [1.45–4.89]	0.002
Technicians	55 (42.3)	1.56 [0.95–2.57]	0.077	1.66 [0.99–2.80]	0.054
Administrative staff	24 (36.9)	1.25 [0.67–2.31]	0.479	1.29 [0.68–2.45]	0.425
Scientists	45 (31.9)	1		1
Chronic diseases			0.634
Yes	40 (42.6)	1.15 [0.72–1.83]
No	131 (39.2)	1
Tobacco consumption			0.013		0.039
Yes	24 (28.2)	0.52 [0.31–0.87]		0.54 [0.29–0.97]
No	145 (43.0)	1		1
Alcohol consumption			0.031		0.432
Yes	8 (22.9)	0.41 [0.18–0.94]		0.70 [0.29–1.69]
No	160 (41.7)	1		1
Involvement in COVID-19 activities within the IPT			0.365
Yes	34 (44.7)	1.29 [0.78–2.13]
No	135 (38.6)	1
Contact with outpatients or their biological specimens			0.312
Yes	49 (43.8)	1.26 [0.81–1.95]
No	119 (38.1)	1
Training in COVID-19 prevention and control			0.329
No	152 (40.4)	1.45 [0.76–2.83]
Yes	14 (31.8)	1
Compliance with preventive measures			0.404
Never/ occasionally	62 (42.8)	1.20 [0.80–1.81]
Always/ usually	108 (38.3)	1
Contact with a confirmed COVID-19 case			0.646
Yes	114 (40.1)	1.13 [0.72–1.77]
No	41 (37.3)	1
Travel outside Tunisia since December 2019			0.869
Yes	16 (38.1)	0.91 [0.47–1.76]
No	155 (40.2)	1

CI: Confidence interval

Variables introduced in the initial model of multivariate analysis were gender, age class, occupation, tobacco consumption, and alcohol consumption.