In contrast, a cohort study of 257 consecutive patients undergoing LNF, D´Alessio et al analyzed outcomes based on BMI (< 25, 25-30, and >30 kg/m2); No significant differences in symptom scores and clinical success rates were found among the different subsets. However, mean BMI for obese patients was 33 kg/m2 (obesity class I) and only three patients were >35 kg/m2.