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Table 4 The PFM strength of women in 6–8 weeks postpartum among the different vaginal delivery modes

From: Effect of different delivery modes on the short-term strength of the pelvic floor muscle in Chinese primipara

  N 0 1 2 3 4 5
Perineal laceration Group 398 21 151 192 30 4 0
Episiotomy Group 2279 197 996 975 108 3 0
Forceps assisted Group 72 5 37 28 2 0 0
  - - -
X2 or Z 18.736 −4.182 −2.550 −0.830
p-value 0.000 0.000 0.032 1.000
  1. Kruskal-Wallis H test was used to assess the difference of the PFM function among the three vaginal delivery modes
  2. Mann-Whitney U test and Bonferroni’s correction were conducted to assess pairwise samples