Table 4.

Evaluation of publication bias using the Egger's and the Begg's test.

Characteristic	p (Egger's)	p (Begg's)	Characteristic	p (Egger's)	p (Begg's)
Proportion of male	0.658	0.588	Leukocytosis	0.989	0.535
Fever	0.434	0.421	Normal leukocytes	0.614	0.230
Cough	0.857	0.619	Leukopenia	0.657	0.051
Dyspnea	0.107	0.049	Lymphopenia	0.455	0.448
Chest tightness	0.688	0.845	Elevated C-reactive protein	0.271	0.734
Fatigue	0.293	0.638	Elevated procalcitonin	0.817	0.059
Expectoration	0.146	0.157	Elevated D-dimer	0.883	0.296
Myalgia	0.291	0.580	Abnormal liver function	0.454	0.851
Dizziness	0.854	0.529	Thrombocytopenia	0.224	0.296
Headache	0.189	0.150	ARDS	0.487	0.801
Pharyngalgia	0.276	0.063	Acute kidney injury	0.521	0.458
Diarrhea	0.134	0.741	Acute cardiac injury	0.253	0.448
Nausea and vomiting	0.877	0.582	Shock	0.491	1.000