Table 2.

Results of the meta-analysis of the sex, age, comorbidity and clinical manifestation.

Overall Parameter	Individual Parameter	∗OR or RR	95% CI	p value	I2
Sex	Sex	2.41	1.93–3.02	<0.00001	67%
Age	Age≥50 vs. age<50	3.36	1.79–6.30	0.0002	89%
	Age≥65 vs. age<65	0.79	0.59–1.06	0.11	88%
Comorbidity	Any comorbidity	3.13	2.26–4.32	<0.00001	64%
	Hypertension	2.35	1.83–3.02	<0.00001	66%
	Diabetes	2.42	1.84–3.19	<0.00001	58%
	Cerebrovascular disease	3.78	2.22–6.43	<0.00001	35%
	Cardiovascular disease	3.33	2.47–4.47	<0.00001	47%
	Respiratory disease	2.58	1.76–3.77	<0.00001	33%
	Malignancy	2.32	1.63–3.32	<0.00001	9%
	Chronic kidney disease	2.27	1.41–3.65	0.0007	32%
	Chronic liver disease	1.70	1.19–2.42	0.003	0%
	Overall	2.59	2.31–2.89	<0.00001	49%
Symptoms	Fever	1.68	1.29–2.19	0.0001	54%
	Cough	1.41	1.11–1.77	0.004	63%
	Fatigue	1.26	1.03–1.55	0.03	36%
	Anorexia	2.38	1.60–3.54	<0.0001	0%
	Myalgia	1.30	0.98–1.71	0.07	58%
	Dyspnea	4.30	2.98–6.22	<0.00001	79%
	Chest tightness	2.11	1.30–3.42	0.002	72%
	Sputum production	1.35	1.00–1.82	0.05	55%
	Hemoptysis	4.93	2.43–10.02	<0.0001	0%
	Pharyngalgia	0.91	0.30–2.74	0.87	69%
	Diarrhea	1.35	1.03–1.78	0.03	30%
	Nausea	1.26	0.48–3.31	0.64	86%
	Vomiting	1.48	0.97–2.25	0.07	24%
	Abdominal pain	2.38	1.25–4.52	0.008	0%
	Headache	1.19	0.83–1.72	0.34	48%
	Dizziness	1.40	0.87–2.28	0.17	22%
	Sore throat	1.60	0.88–2.91	0.12	66%
	Overall	1.62	1.46–1.79	<0.00001	68%

^∗Risk Ratio (RR) was used only for age.