Table 3.
Treatment or procedures required for complications in women with obstetric anal sphincter injuries (excluding the 3 women with a rectal buttonhole tear)
| Number of women (%) | Total (N = 1147) |
3a tear (n = 422) |
3b tear (n = 420) |
3c tear (n = 160) |
Ungraded 3rd-degree tear (n = 83) | Fourth-degree tear (n = 62) | p-valuea OR, 95% CI | p-valueb OR, 95% CI | p-valuec OR, 95% CI |
|---|---|---|---|---|---|---|---|---|---|
| dWound re-suturing | 10 (0.9) | 2 (0.5) | 5 (1.2) | 1 (0.6) | 1 (1.2) | 1 (1.6) | 0.33 | 0.79 | 0.42 |
| dSecondary sphincter repair | 11 (1.0) | 1 (0.2) | 2 (0.5) | 5 (3.1) | 1 (1.2) | 2 (3.2) | 0.09 |
< 0.01* OR = 9.0, 2.1–38.2 |
0.11 |
| dLidocaine gel for perineal pain | 23 (2.0) | 10 (2.4) | 5 (1.2) | 4 (2.5) | 4 (4.9%) | 0 | 0.34 | 0.54 | 0.63 |
| dCocktail injection | 2 | 0 | 1 | 0 | 1 | 0 | 0.58 | 0.84 | 0.90 |
| dSilver nitrate for granulation tissue | 21 (1.8) | 3 (0.7) | 9 (2.1) | 2 (1.3) | 6 (7.3%) | 1 (1.6) | 0.12 | 0.86 | 1.0 |
| dVaginal dilators | 5 (0.4) | 1 (0.2) | 2 (0.5) | 0 | 1 (1.2) | 1 (1.6) | 0.76 | 0.45 | 0.24 |
| dScar re-fashioning | 5 (0.4) | 2 (0.5) | 3 (0.7) | 0 | 0 | 0 | 0.93 | 0.33 | 1.0 |
95% CI = 95% confidence interval; OR = odds ratio
*Statistically significant p-value
a: comparing between 3a and 3b/c tear grade
b: comparing between 3a/b and 3c tear grade
c: comparing between overall third- and fourth-degree tear
d: chi-square test and Fisher exact tests are used