Table 1. Patient characteristics based on timing of plain transversus abdominis plane (TAP) block Variables Overall (N = 262) Preoperative TAP (n = 240) Postoperative TAP (n = 22) P-value Age, years, mean (SD) 57.76 (16.10) 57.83 (15.87) 56.95 (18.90) 0.807 Male, no. (%) 118 (45.0) 107 (44.6) 11 (50.0) 0.791 Body mass index, kg/m2, mean (SD) 28.38 (7.32) 28.51 (7.48) 27.03 (5.27) 0.366 Diabetes mellitus, no. (%) 67 (25.6) 64 (26.7) 3 (13.6) 0.278 Hyperlipidemia, no.