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. Author manuscript; available in PMC: 2014 Feb 1.
Published in final edited form as: Am J Obstet Gynecol. 2012 Nov 28;208(2):112.e1–112.e11. doi: 10.1016/j.ajog.2012.11.040

Table 4.

Additional variables for consideration in a prognostic classification system

Component Not Closed
N (%)
Closed
N (%)
RR (95% CI)
Patient characteristics
Age > 25 65 (55.1) 241 (46.4) 1.10 (0.77-1.56)
Duration of fistula (average years, sd) 5.5 ( 8.3) 3.0 ( 4.7) 1.04(1.03-1.06)**
Comorbidities present at baseline
Genital cutting 35 (29.7) 99 (19.2) 1.31 (0.88-1.95)
Malnutrition 8 ( 6.8) 31 ( 6.0) 1.01 (0.46-2.22)
Anemia 9 ( 7.6) 36 ( 6.9) 0.88 (0.62-1.24)
UTI 0 ( 0.0) 2 ( 0.4) -
HIV 0 ( 0.0) 2 ( 0.4) -
Malaria 1 ( 0.8) 3 ( 0.6) 0.93 (0.33-2.66)
Fistula characteristics and/or categorizations of fistula characteristics not included in above
classification systems
Necrotic tissue present 16 (13.7) 46 ( 8.9) 1.33 (0.61-2.86)
No or mild scarring 51 (43.2) 356 (68.7) Ref
Moderate scarring 43 (36.4) 133 (25.7) 1.74 (1.08-2.82)**
Severe scarring 24 (20.3) 29 ( 5.6) 3.27 (1.91-5.68)**
No urethral involvement 46 (39.0) 326 (62.9) Ref
Partial urethral involvement 30 (25.4) 119 (23.0) 1.52 (1.12-2.07)**
Complete destruction or transection /
circumferential injury
41 (35.0) 72 (14.0) 2.65 (1.87-3.76)**
Non-vvf (ureteric, urethral,
rectovaginal, cervical fistula)
78 (66.7) 266 (51.6) 1.71 (1.19-2.44)**
Cervix not visible 27 (22.9) 79 (15.4) 1.43 (0.89 -2.72)*
**

p-value <.05

*

p-value <.20