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Table 3 Rate of conversion stratified by sex and BMI

From: Lower conversion rate with robotic assisted rectal resections compared with conventional laparoscopy; a national cohort study

  Conversion rate
RR LR ORa (95% CI)
Male (all cases) 6 out of 231 (2.6) 65 out of 551 (11.8) p < 0.001*
 Male, BMI > 30 3 out of 52 (5.77) 19 out of 91 (20.88) 0.23 (0.07–0.83) p = 0.024
 Male, BMI < 30 3 out of 172 (1.74) 42 out of 451 (9.31) 0.17 (0.06–0.57) p = 0.004
Female (all cases) 2 out of 114 (1.4) 22 out of 358 (6.1) p = 0.024*
 Female, BMI > 30 0 out of 28 (0.00) 7 out of 57 (12.28) 0.12 (0.01–2.15) p = 0.149
 Female, BMI < 30 2 out of 111 (1.80) 15 out of 297 (5.05) 0.36 (0.08–1.53) p = 0.162
  1. Values in parentheses are percentages unless indicated otherwise
  2. RR robotic resection, LR laparoscopic resection
  3. aOR for conversion in RR with LR as reference
  4. *Chi-square analysis
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