Skip to main content

Table 2 Differences in patients’ characteristics and obstetrical data between women with different severity of anal incontinence (Parks classification) who suffered from obstetric anal sphincter injury during delivery

From: Obstetrical and epidemiological factors influence the severity of anal incontinence after obstetric anal sphincter injury

  Parks stage III, n = 8 Parks stage II, n = 23 p value
Patients’characteristics
 Age*(years) 31.6 ± 4.9 32.8 ± 2.3 0.3
 Body mass index* (kg/m2) 27.2 ± 2.9 26.8 ± 3.7 0.2
 Gestational diabetes (%) 0 9 0.2
Obstetrical data
 Weeks of pregnancy* 38.6 ± 1.6 39.3 ± 1.2 0.1
 Birth weight (g)* 3316.8 ± 381.6 3467.1 ± 412.9 0.08
 Instrumental delivery (%) 60 48 0.2
 Non-occiput anterior presentation (%) 37 9 0.06
 2nd stage of labor (min)* 98.9 ± 76.0 104.3 ± 62.8 0.5
 Episiotomy (%) 60 39 0.1
 Nulliparous at delivery (%) 75 65 0.2
 Induced labor (%) 37 21 0.2
 Oxytocin during 2nd stage of labor (%) 100 56 0.02
 Epidural anaesthesia (%) 78 48 0.3
 Estimated blood loss (ml)* 512.5 ± 196.4 493.4 ± 154.8 0.2
 Male infant (%) 65 65 0.2
Degree of OASI (%)
 3a 37 39 0.1
 3b 25 53 0.2
 3c 13 8 0.4
 4 25 0 0.08
Follow-up assessment
 Follow-up interval in weeks* 16.2 ± 4.5 30.9 ± 26.5 < 0.001
 IAS-width (mm)* 1.6 ± 0.3 1.5 ± 0.5 0.2
 EAS-width (mm)* 4.8 ± 1.1 5.0 ± 1.9 0.2
 Perineum length (cm) * 2.2 ± 0.7 2.3 ± 0.7 0.2
 Pelvic floor strength (Oxford scale)* 1.9 ± 0.6 2.0 ± 0.7 0.3
 Kelly-Holschneider Score* 16.7 ± 1.6 18.7 ± 1.1 0.01
  1. All values are in means for continuous numerical data or values for discrete data; in brackets the standard deviation and the percentage, respectively. For data marked with (*) the Mann-Whitney U test was used to compare means and calculate the p values, all others with the Fischer’s exact test