showed a trendP = 0.076
Surgical time exceeding 4 h showed a trend toward higher risk (OR = 1.87, 95% CI: 0.94–3.75, P = 0.076), while anesthesia time greater than 4 h was significantly associated with elevated risk (OR = 2.97, 95% CI: 1.44–6.12, P = 0.003).