Table 3.

Multivariate logistic regression analysis on variables associated with side effects and severe side effects after Covid-19 vaccination.

Factors	OR	95% C.I. for 0R		p-value
		Lower	Upper
Side Effects
Age <40 (vs. ≥40)	1.866	1.398	2.492	<0.001
Females (vs. males)	1.696	1.324	2.172	<0.001
Current smoker (vs. nonsmoker)	1.428	1.108	1.841	0.006
Healthcare worker (vs. non healthcare worker)	1.181	0.908	1.536	0.214
Did not receive Influenza shot last year (vs. did receive Influenza shot last year)	1.929	1.483	2.511	<0.001
Oxford-AstraZeneca (vs. other vaccine brands)	1.426	1.055	1.928	0.021
Sputnik light (vs. other vaccine brands)	1.283	0.890	1.850	0.181
Pfizer-BioNTech (vs. other vaccine brands)	1.050	0.742	1.485	0.783
History of Covid-19 infection pre-vaccination (vs. no history of Covid-19 infection pre-vaccination)	1.317	1.021	1.699	0.034
Co-morbidities (vs. no co-morbidities)	1.438	1.038	1.990	0.029
Severe Side Effects
Age <40 (vs. ≥40)	2.113	1.214	3.678	0.008
Females (vs. males)	2.245	1.487	3.391	<0.001
Current smoker (vs. non smoker)	1.230	0.839	1.803	0.289
Healthcare worker (vs. non healthcare worker)	0.793	0.524	1.201	0.273
Did not receive Influenza shot last year (vs. did receive Influenza shot last year)	1.697	1.022	2.819	0.041
Oxford-AstraZeneca (vs. other vaccine brands)	2.799	1.767	4.435	<0.001
Sputnik light (vs. other vaccine brands)	0.629	0.315	1.255	0.188
Pfizer-BioNTech (vs. other vaccine brands)	1.008	0.517	1.967	0.981
History of Covid-19 infection pre-vaccination (vs. no history of Covid-19 infection pre-vaccination)	1.144	0.781	1.676	0.489
Co-morbidities (vs. no co-morbidities)	1.993	1.195	3.325	0.008
Hypertension (vs. no hypertension)	2.023	0.928	4.408	0.076
Diabetes Mellitus (vs. no diabetes mellitus)	2.788	1.316	5.909	0.007