Stratified analyses of pooled risk estimates with 95% confidence intervals (CIs) for the highest compared with the lowest legume intake and the colorectal adenoma risk.

#Patients from hospital based case control studies.*Participants from cohort studies and population based case control studies were regarded as asymptomatic subjects (with no signs including diarrhea, bloating, abdominal pain, and fecal occult blood). Abbreviations: FFQ: food frequency questionnaire; BMI, body mass index; NSAID, non-steroidal anti-inflammatory drug.