Table 3.

Meta analysis results of specific symptoms.

	df	Cochran's Q test		Statistical model	MD (days)	95% CI	P
		I 2	P
Diarrhea (21–23, 28, 29)	4	0%	0.45	Fixed-effect	−2.12	[−2.41,−1.83]	< 0.00001
Cough (22, 28, 30)	2	85%	0.001	Random-effects	−2.21	[−4.56,0.13]	0.06
Shortness of breath (22, 28, 30)	2	43%	0.17	Fixed-effect	−1.37	[−2.22,−0.53]	0.001
Fever (22, 24, 30)	2	91%	< 0.00001	Random-effects	−1.40	[−3.16,0.36]	0.12
Headache (22, 30)	1	97%	< 0.00001	Random-effects	−2.59	[−6.65,1.48]	0.21
Weakness (28, 30)	1	67%	0.08	Random-effects	−0.37	[−4.19,3.46]	0.85

MD, mean difference; df, degree of freedom; CI, confidence intervals.