Lymphocyte count predicts the severity of COVID-19: Evidence from a meta-analysis

Table 1 Characteristics of the included studies

Ref.	City, country	Coronavirus disease	Outcome	n (case)	Lymphocyte count of case, mean ± SD (× 109/L)	n (control)	Lymphocyte count of control, mean ± SD (× 109/L)
Das et al[14], 2015	Saudi Arabia	MERS	Mortality	19	18.25 ± 11.75	36	24.00 ± 19.75
Chang et al[13], 2006	Taiwan, China	SARS	Mortality	73	0.81 ± 0.38	273	1.02 ± 0.48
Wang et al[10], 2020	Wuhan, China	COVID-19	Severity	36	0.80 ± 0.10	102	0.90 ± 0.10
Zhang et al[21], 2020	Wuhan, China	COVID-19	Severity	58	0.70 ± 0.13	82	0.80 ± 0.10
Cui et al[22], 2003	Beijing, China	SARS	Diagnostic rate	38	0.91 ± 0.44	200	3.00 ± 1.00
Chen et al[19], 2006	Taiwan, China	SARS	Diagnostic rate	15	0.60 ± 0.30	15	2.00 ± 0.20
Li et al[23], 2020	Shanghai, China	COVID-19	Diagnostic rate	10	1.22 ± 0.20	30	1.75 ± 0.33
Chen et al[24], 2004	Taiwan, China	SARS	Diagnostic rate	8	0.90 ± 0.30	62	1.50 ± 1.10

SARS: Severe acute respiratory syndrome.