Table 3.

Association between post-vaccination most common side effects *reported by the participants and their predisposing factors. (N= 558)

Variable	Category	Viral vector n=239			Pfizer vaccine n=236			Moderna vaccine N=83
		N	Mean rank	P value	n	Mean rank	P value	n	Mean rank	P value
Gender**	Male	102	105.17	0.004	86	96.52	0.000	31	34.24	0.20
	Female	137	131.04		150	131.10		52	46.63
Age**	Less than20	56	111.12	0.264	81	126.31	0.194	18	55.22	0.007
	20 or more	183	122.72		155	114.42		65	38.34
BMI***	Underweight	15	172.30	0.000	19	165.92	0.014	7	36.00	0.507
	Normal	115	130.91		139	113.29		57	44.61
	Overweight	79	103.72		64	115.73		12	37.54
	Obese	30	94.90		14	118.50		7	34.36
CHRONIC DISEASES**	None	206	123.77	0.032	224	115.51	0.003	70	41.24	0.492
	At least one	33	96.44		12	174.25		13	46.12
Allergy**	Yes	32	135.25	0.173	39	148.78	0.002	14	62.18	0.000
	No	207	116.64		197	112.51		69	37.91
Smoking**	Smoker	78	114.96	0.426	63	106.40	0.093	17	35.32	0.189
	Non-smoker	161	122.44		173	122.91		66	43.72
Previous covid-19 infection**	Yes	69	125.09	0.462	66	132.48	0.045	23	48.09	0.114
	No	170	117.94		170	113.07		60	39.67

Notes: *The most common side effects were fever, chills, headache, fatigue, muscle pain, joint pain, injection site pain, nausea, diarrhea, and dizziness. **Mann-Whitney U–test. ***Kruskal-Wallis H–test. Bold font P Value (p≤0.05).