Table 1 Basic information of included studies
NO. | Author | Publication year | Research time period | Region | Bacterial culture | Score | ||
|---|---|---|---|---|---|---|---|---|
Case(n) | G- (n) | G+(n) | ||||||
1 | Huang JK et al. [8] | 2006 | 2002–2005 | Guangdong | 453 | 273 | 147 | 4 |
2 | Huang JY et al. [9] | 2008 | 2006–2007 | Jiangxi | 406 | 348 | 49 | 4 |
3 | He CH et al. [10] | 2017 | 2009–2016 | Guangdong | 3280 | 2268 | 563 | 4 |
4 | Ju GW et al. [11] | 2014 | 2010–2013 | Zhejiang | 132 | 82 | 50 | 3 |
5 | Xu SX et al. [12] | 2015 | 2011–2013 | Guizhou | 568 | 391 | 128 | 4 |
6 | Hong X et al. [13] | 2014 | 2011–2013 | Zhejiang | 238 | 159 | 72 | 4 |
7 | Huang JB et al. [14] | 2014 | 2011–2013 | Yunnan | 416 | 288 | 94 | 4 |
8 | Zhu M et al. [15] | 2017 | 2012–2015 | Henan | 320 | 272 | 44 | 4 |
9 | Liu XL et al. [16] | 2014 | 2012–2013 | Tianjin | 58 | 44 | 13 | 3 |
10 | Li J et al. [17] | 2015 | 2013–2014 | Shandong | 226 | 151 | 50 | 3 |
11 | Silang JC et al. [18] | 2018 | 2015–2017 | Tibet | 103 | 73 | 30 | 3 |
12 | Zhu CL et al. [19] | 2018 | 2015–2018 | Tibet | 160 | 124 | 24 | 4 |
13 | Xiao N et al. [20] | 2018 | 2015–2017 | Beijing | 660 | 413 | 247 | 4 |
14 | Li H et al. [21] | 2017 | 2015–2016 | Shenzhen | 284 | 195 | 64 | 3 |
15 | Yi SF et al. [22] | 2019 | 2015–2017 | Tibet | 198 | 164 | 34 | 3 |
16 | Li Y et al. [23] | 2019 | 2015–2018 | Beijing | 100 | 66 | 31 | 4 |
17 | Li BG et al. [24] | 2018 | 2015–2017 | Guizhou | 90 | 63 | 21 | 3 |
18 | Li J et al. [25] | 2018 | 2016–2018 | Jiangxi | 60 | 37 | 15 | 3 |
19 | Zhao WH et al. [26] | 2022 | 2017–2020 | Shaanxi | 133 | 98 | 31 | 3 |
20 | Yang J et al. [27] | 2019 | 2017–2018 | Guizhou | 273 | 170 | 67 | 4 |
21 | Zhang ZB et al. [28] | 2021 | 2018–2019 | Jiangxi | 108 | 64 | 33 | 4 |
22 | Liu LZ et al. [29] | 2020 | 2018–2019 | Hunan | 130 | 79 | 45 | 3 |
23 | Zhou H et al. [30] | 2021 | 2019–2020 | Jiangxi | 79 | 54 | 14 | 3 |
24 | Ao J et al. [31] | 2021 | 2019–2020 | Henan | 176 | 106 | 54 | 4 |
25 | Chen D et al. [32] | 2018 | 2010–2015 | Guangdong | 3892 | 2818 | 694 | 4 |
26 | Cui et al. [33] | 2021 | 2015–2019 | Hebei | 407 | 344 | 46 | 4 |
27 | Gu J et al. [34] | 2022 | 2014–2021 | Hunan | 542 | 386 | 103 | 4 |
28 | Wang S et al. [35] | 2020 | 2014–2018 | Beijing | 457 | 401 | 140 | 4 |
29 | Yang Z et al. [6] | 2022 | 2014–2020 | Fujian | 141 | 88 | 46 | 4 |
30 | Bai Y et al. [36] | 2020 | 2014–2018 | Hunan | 353 | 209 | 69 | 4 |
31 | Zhang HF et al. [37] | 2019 | 2016–2018 | Jiangsu | 90 | 70 | 20 | 3 |
32 | Cao RL et al. [38] | 2020 | 2017–2018 | Shenzhen | 243 | 162 | 62 | 3 |
33 | Liu JJ et al. [39] | 2016 | 2014–2015 | Guangdong | 127 | 76 | 49 | 4 |
34 | Quan KL et al. [40] | 2020 | 2019–2019 | Hunan | 368 | 231 | 75 | 4 |
35 | Shang XT et al. [41] | 2017 | 2014–2016 | Shaanxi | 113 | 95 | 18 | 4 |
36 | Wang Y et al. [42] | 2015 | 2010–2014 | Anhui | 716 | 369 | 99 | 4 |
37 | Wang D et al. [43] | 2018 | 2015–2017 | Chongqing | 201 | 124 | 27 | 3 |
38 | Xu YY et al. [44] | 2019 | 2014–2016 | Zhejiang | 60 | 42 | 18 | 3 |
39 | Ye JB et al. [45] | 2021 | 2015–2019 | Zhejiang | 480 | 290 | 131 | 4 |
40 | Yang C et al. [46] | 2022 | 2018–2021 | Hebei | 600 | 416 | 136 | 4 |
41 | Cui HJ et al. [47] | 2022 | 2017–2020 | Hebei | 114 | 78 | 32 | 4 |