Table 2.
Predictors of the onset of fecal incontinence (FI) at follow-up (FU)
| Variable | Overall n |
FI at FU n (%) |
Univariate OR | Adjusted ORa |
|---|---|---|---|---|
| Ageb (mean ± s.d.) | 67 ± 9 | 61 ± 6 | 1.2 (0.7, 2.1) | 1.3 (0.8, 2.2) |
| Gender | ||||
| Male | 312 | 20 (6.4) | 1.0 | 1.0 |
| Female | 273 | 17 (6.2) | 1.0 (0.5, 1.9) | 0.9 (0.5, 1.9) |
| Usual bowel pattern (self-reported)# | ||||
| Normal | 456 | 25 (5.5) | 1.0 | 1.0 |
| Constipation | 79 | 4 (5.1) | 0.9 (0.3, 2.7) | 0.9 (0.3, 2.8) |
| Diarrhea | 40 | 7 (17.5) | 3.7 (1.5, 9.1) | 3.8 (1.5, 9.4) |
| Alternating | 8 | 1 (12.5) | 2.5 (0.3, 20.8) | 2.6 (0.3, 22.5) |
| Incomplete evacuation | ||||
| Noc | 553 | 32 (5.8) | 1.0 | 1.0 |
| Yesd | 32 | 5 (15.6) | 3.0 (1.1, 8.3) | 3.4 (1.2, 9.8) |
| Position other than sitting for defecation | ||||
| Noc | 583 | 36 (6.2) | 1.0 | 1.0 |
| Yesd | 2 | 1 (50.0) | 15.2 (0.9, 247.9) | 20.0 (1.2, 339) |
| Pelvic radiation | ||||
| No | 572 | 35 (6.1) | 1.0 | 1.0 |
| Yes | 9 | 2 (22.2) | 4.4 (0.9, 21.9) | 5.1 (1.1, 25.9) |
OR, odds ratio.
a
Adjusted for age, gender, and diarrhea at baseline, except as noted (#) for usual bowel pattern, which only adjusted for age and gender.
b
Per 10 years of age.
c
Defined as never or sometimes.
d
Defined as often or usually.
Additional variables considered but not significant were number of bowel movements, urgency, loose or watery stools, days without stools, straining, hard stools, manual disimpaction, time to defecate, feeling of anal blockage, medications to assist defecation, perianal infection, fistula, anorectal surgery, anorectal trauma, diabetes mellitus, spinal cord injury, stroke, vaginal births, rectal prolapse, rectocele.