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Table 1 Demographics and preoperative factors of obese and normal groups classified by BMI or VFA

From: Impact of visceral obesity on operative outcomes of laparoscopic nephrectomy: comparison between visceral fat area and body mass index

Variable BMI normal BMI obese p VFA normal VFA obese p
Pts 71 25   42 54  
Age, years (r; 43–96) 71.0 ± 10.6 70.8 ± 10.4 0.917 72.7 ± 11.4 69.7 ± 9.7 0.170
Gender, male/female 46/25 18/7 0.510 23/19 41/13 0.029
ASA-PS (r; 1–3) 2.2 ± 0.5 2.3 ± 0.5 0.429 2.2 ± 0.6 2.3 ± 0.5 0.519
Diseased side, right/left 31/40 10/15 0.750 19/23 22/32 0.658
Tumor size of renal tumor, mm (r; 15–81) 40.3 ± 18.4 41.1 ± 12.4 0.885 41.4 ± 18.0 40.1 ± 16.7 0.813
Renal arteries (r; 1–3) 1.3 ± 0.5 1.2 ± 0.4 0.539 1.2 ± 0.5 1.3 ± 0.5 0.740
Renal veins (r; 1–3) 1.1 ± 0.4 1.3 ± 0.4 0.057 1.1 ± 0.4 1.2 ± 0.4 0.551
BMI, kg/m2 (r; 16.6–35.7) 21.8 ± 2.0 28.1 ± 2.7 < 0.001
VFA, cm2 (r; 2.0–295.1) 57.8 ± 39.9 156.0 ± 42.2 < 0.001
  1. Data are presented as mean ± standard deviation
  2. ASA-PS American Society of Anesthesiologist-performance status, BMI body mass index, VFA visceral fat area