Pulmonary Medicine / 2020 / Article / Tab 3

Research Article

The Effect of Smoking on COVID-19 Symptom Severity: Systematic Review and Meta-Analysis

Table 3

The relationship between history of smoking and the severity of COVID-19.

StudiesSevere COVID-19 with history of smokingNonsevere COVID-19 with history of smoking
AuthorsEventTotal%EventTotal%

CDC report [4]384578.320861803.3
Chen et al. [10]3437.01210211.0
Feng et al. [11]1712114.0273338.1
Goyal et al. [12]61304.6142635.3
Guan et al. [13]3817222.012091313.0
Liu et al. [14]31127.32672.0
Mo et al. [15]4854.72702.9
Qi et al. [16]315062.02221710.1
Shi et al. [17]64912.2344387.8
Wang et al. [18]72528.091009.0
Wan et al. [19]1402.58958.4
Yang et al. [20]032022010.0
Yu et al. [21]2268.0243078.9
Zhang et al. [22]65810.33823.6
Zhang et al. [23]63020.00900
Zhou et al. [24]5549.061374.0
Total173138312.549394145.2

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