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Table 2 Details of the comparison of the mean salivary oxytocin levels (pg/mL) between the intervention and control groups (N = 42)

From: Oxytocin levels in low-risk primiparas following breast stimulation for spontaneous onset of labor: a quasi-experimental study

  Intervention Control p-value
n Mean SD n Mean SD
First day Base 21 159.6 101.7 17 91.8 39.5 0.009
30 min 19 165.4 130.0 17 78.3 33.9 0.010
60 min 19 132.1 85.9 17 75.0 35.1 0.013
75 min 20 147.6 89.2 16 67.1 33.2 0.001
Third day Base 15 163.8 122.2 13 79.9 42.5 0.023
30 min 14 168.5 110.2 13 76.0 26.5 0.008
60 min 14 123.3 100.7 13 74.5 33.1 0.106
75 min 16 127.0 99.4 13 72.7 25.7 0.050
  1. An independent t-test was performed for oxytocin level analyses. Welch’s t-test was conducted when the data had unequal variances. In this table, the assumption of normality was adopted in 9 out of 16 samples. The assumption of normality was possible at baseline and at 75 min on the first day and at 30 min on the third day in both groups
  2. p-value: using the two-tailed t-test
  3. SD Standard deviation