TTR and sarcopenia: In the univariate analysis, low BMI (P = 0.049), low HBI (P = 0.027), low preoperative levels of serum albumin (P = 0.001), low prealbumin levels (P = 0.009), emergency surgery (P = 0.002), and colostomy and sarcopenia (P = 0.026) were identified as factors related to postoperative complications (Table 4).