Figure 1. Nasogastric tube removal probability according to the Kaplan-Meier method. Univariate analysis revealed a significantly earlier nasogastric tube removal day for erythromycin administration (Breslow-Gehan test, P = .002; log-rank test, P = .004). Nasogastric tube removal for 50% of patients was significantly earlier in the erythromycin group than in the control group (4.0 ± 0.8 vs. 12.0 ± 4.7 days).