Factor | Category | Number of positive/tested/ | Prevalence (%) (95 % CI) | P-value | OR (95 % CI) |
---|---|---|---|---|---|
Region | Hebei Province | 1/54 | 1.85 (0.00–5.45) | 0.0198 | Reference |
Heilongjiang Province | 3/40 | 7.50 (0.00–15.66) | 4.30 (0.43–42.94) | ||
Jilin Province | 7/110 | 6.36 (1.80–10.93) | 3.60 (0.43–30.05) | ||
Liaoning Province | 11/72 | 15.28 (6.97–23.59) | 9.56 (1.19–76.50) | ||
Shandong Province | 0/29 | 0 (−) | – | ||
Gender | Female | 9/150 | 6.00 (2.20–9.80) | 0.4205 | Reference |
Male | 13/155 | 8.39 (4.02–12.75) | 1.43 (0.59–3.46) | ||
Age | > 3 months | 16/225 | 7.11 (3.75–10.47) | 0.9081 | Reference |
≤ 3 months | 6/80 | 7.50 (1.73–13.27) | 1.06 (0.40–2.81) | ||
Season | Autumn | 6/171 | 3.51 (0.75–6.27) | 0.0049 | Reference |
Spring | 1/24 | 4.17 (0.00–12.16) | 1.20 (0.14–10.38) | ||
Summer | 15/110 | 13.64 (7.22–20.05) | 4.34 (1.63–11.57) | ||
Total | 22/305 | 7.21 (4.31–10.12) |