Table 1. Clinicopathological characteristics.

Values are presented as mean±standard deviation or number (%). BMI = body mass index; ASA = American Society of Anesthesiologists; TNM = Tumor Node Metastasis. ^*A serum hemoglobin level of < 12 g/dl for females and < 13 g/dl for males. ^†A serum albumin level of < 3.5 g/dl. ^‡The TNM stages are based on the seventh edition of the Union for International Center Control/American Joint Committee on Cancer classification system.