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Table 1 Clinical characteristics of thepatients a

From: Is laparoscopic colorectal cancer surgery associated with an increased risk in obese patients? A retrospective study from China

Characteristics Nonobese (<25.0 kg/m2) ( N= 371) Obese I (25.0 to29.9 kg/m2) (N= 142) Obese II (≥30 kg/m2) (N= 14) P-value
Mean age , yr 68.6 69.7 72.5 0.109
Males, n (%) 185(49.9%) 78(54.9%) 8(57.1%) 0.537
Mean BMI, kg/m 2 21.5 26.6 30.9 0.001
ASA class, n (%)     0.295
I/II 310(83.6%) 112(78.9%) 10(71.4%)  
III 61(16.4%) 30(21.1%) 4(28.6%)  
Comorbidity     0.589
Yes 71(19.1%) 22(15.5%) 2(14.3%)  
No 300(80.9%) 140(84.5%) 12(85.7%)  
Operation type, n (%)     0.963
Right colectomy 123(33.2%) 47(33.2%) 5(35.7%)  
Left colectomy/sigmoidectomy 198(53.4%) 73(51.4%) 8(57.1%)  
Low anterior resection 20(5.4%) 11(7.7%) 0(0%)  
Abdominoperineal resection 30(8.0%) 11(7.7%) 1(7.2%)  
pT stage, n (%)     0.861
T1 42(11.3%) 16(11.3%) 1(7.1%)  
T2 62(16.7%) 27(19.0%) 1(7.1%)  
T3 orT4 267(72.0%) 99(69.7%) 12(85.7%)  
Conversionb, n (%) 10(2.6%) 4(2.7%) 2(12.5%) 0.113
  1. aASA, American Society of Anesthesiologists; pT, Primary tumor. bThese 16 conversion patients were presented alone, not counted in the other characteristics analysis.