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. 2023 Jul 7;10:1198593. doi: 10.3389/fvets.2023.1198593

Table 2.

Results of the subgroup analyses on PDCoV infection among pigs in China.

category Subgroup No. studies No. examined No. positive Prevalence (%) (95%CI) Heterogeneity
I2(%) p-value Х2
Region Central China 5 3,703 991 24.5 (16.1–32.9) 95.6 0.000 90.02
North China 4 3,090 640 18.5 (9.7–27.3) 97. 3 0.000 111.03
South China 11 7,773 691 12.2 (9.0–15.3) 96.9 0.000 322.64
East China 6 2,774 272 10.8 (5.4–16.1) 97.3 0.000 182.69
Southwest China 6 1713 184 10.2 (5.4–15.1) 92.3 0.000 65.28
Northeast China 1 672 26 3.9 (2.4–5.3) - - 0.00
Northwest China 4 2,916 65 3.1 (1.1–5.2) 89.2 0.000 27.79
Sampling year Before 2014 5 2008 411 15.6 (4.5–26.8) 98.3 0.000 237.32
2015 4 1,269 253 20.5 (10.1–31.0) 94.8 0.000 57.69
2016 9 2,490 454 18.2 (12.3–24.0) 93.9 0.000 130.54
2017 13 4,084 621 12.7 (8.0–17.4%) 97.4 0.000 469.30
2018 13 6,385 559 11.3 (7.6–14.9) 97.7 0.000 523.71
2019 6 2,648 129 8.8 (5.1–12.6) 90.2 0.000 50.92
2020 2 2,318 46 2.0 (1.3–2.6) 2.3 0.312 1.02
2021 3 2,677 103 4.8 (2.3–7.3) 88.5 0.000 17.34
Pig stage Sow 9 1,685 418 23.6 (15.8–31.4) 93.1 0.000 115.42
Suckling piglet 9 4,381 927 20.4 (11.5–29.4) 98.6 0.000 552.45
Nursery piglet 3 857 107 10.9 (2.5–19.3) 94.1 0.000 33.83
Finishing pig 3 422 61 14.1 (9.0–19.3) 53.4 0.117 4.29