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Table 1 Basic characteristics of included studies in the systematic review

From: Meta-analysis: COVID-19 diagnosis in chest CT—master key for radiologists

Reference Author Location Sample size Type of study Imaging modalities Diagnosis stage Onset of clinical sign Rate of diagnosis in CT Rate of diagnosis in PCR
GGO Consolidation GGO & consolidation Pleural effusion CP pattern Lymphadenopathy Linear opacity
12 Wei Xia et al China 20 cross sectional Chest CT Early stage 60 50 - - - - - 100 -
13 Wei Li et al China 5 cross sectional Chest CT Early stage 100 - - - - - - 60 80
14 Xi Xu et al China 90 cross sectional Chest CT Early stage 72 13 - 4 12 1 61 100 100
15 Wenjie Yang et al China 149 cohort Chest CT Progress Stage 12.8 7.15 26.81 6.7 - 4.7 20.8 88.6 -
16 Yu-Huan Xu et al China 50 cross sectional Chest CT Early stage 73.2 36.6 61 0.1 - - - 82 -
17 Heshui Shi et al China 81 cross sectional Chest CT Early stage 81 - - 5 - 14 - 100 100
17 Heshui Shi et al China 81 cross sectional Chest CT Progress Stage 57 30 3 - - - - 100 100
17 Heshui Shi et al China 81 cross sectional Chest CT Advance Stage 33 - - 13 - 13 - 100 100
18 Michael Chung et al China 21 Case series Chest CT Early stage 57 29 - 0 19 0 14 86 -
19 Yicheng Fang et al China 2 Case series Chest CT Early stage - - - - - - - 100 -
19 Yicheng Fang et al China 2 Case series Chest CT Progress Stage - - - - - - - 100 -
10 Xie et al China 167 cross sectional Chest CT Early stage - - - - - - - 96 97
10 Xie et al China 167 cross sectional Chest CT Progress Stage - - - - - - - 98 100
8 Yicheng Fang et al China 51 cross sectional Chest CT Early stage 72 - - - - - - 98 70.5
20 Adam Bernheim et al China 121 cross sectional Chest CT Early stage 44 17 - - 0 - 0 77.68 92
20 Adam Bernheim et al China 121 cross sectional Chest CT Progress Stage 88 60 - - 20 - 20 100 92
9 Tao Ai et al China 1014 cross sectional Chest CT Early stage 46 50 - - - - - 88 59
21 Harrison X. Bai et al China 219 cross sectional Chest CT Early stage 91 69 64 4 5 3 51 100 -
22 Wei-cai Dai et al China 6 Case report Chest CT Early stage - - - - - - - 100 -
22 Wei-cai Dai et al China 6 Case report Chest CT Progress Stage - - - - - - - 100 -
23 Yan Li et al China 51 cohort Chest CT Early stage 35.3 5.9 54.9 2 70.6 0 - 96 100
24 Shuchang Zhou et al China 40 cross sectional Chest CT Early stage 47.5 37.5 - 2.5 - - - 100 -
24 Shuchang Zhou et al China 22 cross sectional Chest CT Advance Stage 27.3 27.3 - 22.7 - - - 100 -
25 Wei Zhao et al China 101 cross sectional Chest CT Early stage 86.1 43.6 64.4 13.9 - 1 - 92.1 -
26 Jiong Wu et al China 80 cross sectional Chest CT Progress Stage 91 63 - 6 29 4 20 100 -
27 Fabrizio Albarello et al Italy 2 Case series Chest CT Early stage - - - - - - - 100 -
27 Fabrizio Albarello et al Italy 2 Case series Chest CT Progress Stage - - - - - - - 100 -
28 Soon Ho Yoon et al Korea 9 cross sectional chest radiography Early stage 20 80 - - - - - 55.5 -
28 Soon Ho Yoon et al Korea 9 cross sectional chest CT Early stage 35 5 50 - 10 - - 100 -
29 Kunhua Li et al China 83 cross sectional Chest CT - 97.6 63.9 - 8.4 36.1 8.4 65.1 100 -