Parameter Groups of vaginal delivery Groups of vaginal delivery Groups of vaginal delivery Groups of vaginal delivery P
A (n=674) B (n=806) C (n=341) D (n=278)
Rest pre-baseline
Average Mean Amplitude (µV) 3.87(2.07,5.99) 4.01(2.22,6.36) 3.86(2.35,6.64) 3.49(1.84,5.73) 0.037
Phasic (flick) contractions
Average Peak Amplitude (µV)
34.18(24.46,45.42)
33.39 (22.46,44.66)
33.95(23.36,44.59)
29.19(18.38,40.08)
0.000
Time Before Peak (s) 0.33(0.26,0.43) 0.34(0.26,0.44) 0.35(0.27,0.46) 0.35(0.28,0.46) 0.184
Time After Peak (s) 0.41(0.32,0.54) 0.42(0.32,0.55) 0.41(0.32,0.55) 0.43(0.33,0.60) 0.325
Tonic contractions
Average Mean Amplitude(µV) 22.85(15.10,31.89) 22.39(14.19,31.04) 22.32(14.31,30.82) 17.51(12.18,27.02) 0.000
Mean Amplitude Variability 0.22(0.18,0.28) 0.22(0.18,0.28) 0.23(0.19,0.28) 0.24(0.19,0.32) 0.002
Rest post-baseline
Average Mean Amplitude (µV) 4.23(2.62,6.46) 4.48(2.60,6.67) 4.35(2.33,6.55) 3.31(1.91,5.72) 0.000
abdominal muscle engagement
15.71 (7.17,31.76) 16.45 (7.48,32.09) 15.07 (6.86,31.81) 19.72 (7.54,36.61)
0.30