Table 3.

Factors associated with developing moderate and severe COVID-19 symptoms (referent group: students with mild symptoms): results of the multiple multinomial regression model

Variables	Moderate versus mild symptoms			Severe versus mild symptoms
	OR	95% confidence interval	p value	OR	95% confidence interval	p value
Gender
Male	Ref	−	−	Ref	−	−
Female	0.98	0.63, 1.52	>0.9	0.72	0.38, 1.35	0.3
Age	0.94	0.85, 1.04	0.2	0.95	0.82, 1.09	0.5
Type of faculty
Medical sciences	Ref	−	−	Ref	−	−
Social science and humanities	1.01	0.49, 2.07	>0.9	0.67	0.17, 2.70	0.6
Natural science and mathematics	1.04	0.60, 1.82	0.9	1.36	0.58, 3.19	0.5
Technology and engineering sciences	2.32	0.69, 7.76	0.2	4.05	0.88, 18.5	0.072
Other	0.88	0.51, 1.51	0.6	1.79	0.82, 3.92	0.14
Living in student dormitory
Yes	Ref	−	−	Ref	−	−
No	1.40	0.72, 2.70	0.3	1.23	0.47, 3.21	0.7
Having had COVID-19 before
Yes	0.82	0.34, 1.98	0.7	2.38	0.46, 12.3	0.3
No	Ref	−	−	Ref	−	−
Vaccination status
Not vaccinated	Ref	−	−	Ref	−	−
Received as least 1 dose	0.22	0.14, 0.34	<0.001	0.04	0.01, 0.15	<0.001
Location of the exposure to COVID-19
Does not know	Ref	−	−	Ref	−	−
Contact with familiar person(s)	1.32	0.79, 2.19	0.3	1.25	0.57, 2.74	0.6
Travel/tourism	1.90	0.76, 4.74	0.2	2.91	0.84, 10.1	0.092
At work	1.51	0.74, 3.06	0.3	2.48	0.93, 6.62	0.069
At sport activities	1.48	0.12, 18.5	0.8	5.47	0.24, 122	0.3
Parties/meet-ups/social outings	0.92	0.49, 1.73	0.8	1.40	0.55, 3.55	0.5

OR, odds ratio.