CALCA and peritonitis: We also performed the subgroup analyses based on different dominated language, and the result showed that the value of serum PCT to diagnosis peritonitis in eight trials published in Chinese (DOR: 141.09; AUROC: 0.93) [26, 27, 29–34] was substantially higher compared with that published in English (DOR: 29.16; AUROC: 0.92; shown in Table 2) [17–25].