Figure 6.

 Receiver operating characteristic curves demonstrating incremental utility of comprehensive anorectal function assessments for discriminating between controls and faecal incontinence. The proportion of the differences explained by the factors is indicated as a percentage in parentheses. Obstetric-gynaecological (ObGyn) variables included the number of forceps deliveries, number of vaginal deliveries associated with episiotomy, and hysterectomy status. Anal sphincter morphology was graded as normal or abnormal (that is, tear, scar, atrophy, or combination of these abnormalities). Pelvic floor motion was assessed by anorectal angle change during evacuation. BMI, body mass index.