In the Cox regression analysis, higher continuous AIP levels were associated with an increased risk of peritonitis, with HRs of 1.298 (95% CI: 1.027–1.640, p = 0.029) in Model 1, 1.436 (95% CI: 1.119–1.842, p = 0.004) in Model 2, and 1.435 (95% CI: 1.118–1.841, p = 0.005) in Model 3. Here, AIP is linked to peritonitis.