Figure 1: Study flow chart
Phase 1: we calculated the correlation, concordance, and agreement of the sagittal abdominal diameter measurements. This process was repeated three times, one for each sagittal abdominal diameter (defined by their anatomical landmark: the umbilicus, left renal vein, and inferior mesenteric artery).
⬌ Inter-rater variation: A (A1+A2) vs B (B1+B2) measurements (n=60)
⇨ Intra-rater variation: first (A1+B1) vs second (A2+B2) measurements (n=60)
Phase 2: Group 2 patients were randomized to the transperitoneal or extraperitoneal technique in the original trial (STELLA-2), and then were classified according to the minimally invasive approach (conventional or robotic-assisted). Patients with missing data were excluded.