Table 2 Mean scores of McGill pain score in the three groups

Score of Pain at admission

43.73 ± 6.9

42.93 ± 6.98

23.98 ± 4.71

**f = 202.31

P-value = 0.13

Score of Pain after first intervention

25.91 ± 5.48

35.73 ± 7.53

39.38 ± 0.93

*Χ² = 82.52

P-value < 0.001

Score of Pain after second intervention

27.04 ± 6.94

39.07 ± 6.52

58.71 ± 24.96

*Χ² = 82.28

P-value < 0.001

Score of Pain at the end of first stage of labor

38.49 ± 7.28

45.6 ± 6.71

53.28 ± 13

*Χ² = 54.17

P-value < 0.001

Mean score of total pain in the first stage of labor(after study enrollment)

30.48 ± 6.5

40.1 ± 8.41

2.44 ± 0.44

*Χ² = 67.21

P-value < 0.001