Anti-HEV in pet dogs in several developed cities of China according to different age groups, genders and food sources.

OR, odds ratio; CI, confidence interval; *, statistically significant; X2, Chi-Square Test; ref, reference; NA, not analyzed; Dog food, commercially available and not fresh meat.

OR：比值比（odds ratio）；CI：置信区间（confidence interval）；*：具有统计学显著性；X2：卡方检验（Chi-Square Test）；ref：参照组（reference）；NA：未分析（not analyzed）；狗粮（Dog food）：市售且非鲜肉制成的商品粮。