Yusuf Yunus KORKMAZ, Mehmet Şaban KORKMAZ, Oğuzhan AYDIN, Erdem KINACI
Comprehensive Medicine - 2026;18(2):131-136
Objective: This prospective single-centre study aimed to investigate the association between the C-reactive protein-albumin-lymphocyte (CALL Y) index and hospital length of stay (LOS) in patients with acute pancreatitis (AP), and to assess its concordance with conventional severity scores. Materials and Methods: A consecutive cohort of 119 AP patients was enrolled. Admission CALL Y indices were calculated, and Ranson scores, CT severity index (CTSI) values, and ICU requirement were recorded. Receiver operating characteristic/ area under the curve (AUC) analysis, logistic regression, and negative binomial regression models were applied. Results: The CALL Y index demonstrated moderate discrimination for LOS >= 7 days (AUC = 0.64, 95% CI 0.48-0.81), with the optimal cut-off at 0.0082. In logistic regression, lower log(CALL Y) was associated with prolonged stay (OR ? 0.73, p ? 0.04). In negative binomial regression, each 1-log unit decrease in CALL Y corresponded to an ~8% increase in LOS (IRR ? 0.92, p ? 0.03). Conventional severity measures (Ranson, CTSI) and ICU requirement were not significantly associated with LOS. Conclusion: The CALL Y index was independently associated with prolonged hospital stay in AP but not with traditional severity measures, suggesting it may reflect the systemic inflammatory recovery phase. Large multicentre validation studies are warranted.
