Table 3. The association of commonest side effects of the Pfizer vaccine (second dose) with age, gender, and comorbidities.

*p-value significant as <0.05

Variable		Fever			Pain at injection site
		Yes, n(%)	No, n(%)	p-value	Yes, n(%)	No, n(%)	p-value
Age group	<30 years	24(12.0%)	176(88.0%)	<0.001*	152(76.0%)	48(24.0%)	<0.001*
	31-50 years	280(53.3%)	245(46.7%)		272(52.0%)	252(48.0%)
	>50 years	120(43.6%)	155(56.4%)		151(54.9%)	124(45.1%)
Gender	Male	296(46.0%)	348(54.0%)	0.003*	344(53.4%)	300(46.6%)	<0.001*
	Female	128(36.0%)	228(64.0%)		232(65.2%)	124(34.8%)
Hypertension	Present	124(44.3%)	156(55.7%)	0.496	152(54.3%)	128(45.7%)	0.211
	Absent	300(41.7%)	420(58.3%)		424(58.9%)	296(41.1%)
Diabetes mellitus	Present	200(56.2%)	156(43.8%)	<0.001*	228(64.0%)	128(36.0%)	0.003*