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Table 2 comparison of breast pain between two groups

From: The comparison of the effect of flaxseed oil and vitamin E on mastalgia and nodularity of breast fibrocystic: a randomized double-blind clinical trial

Group Baseline mean breast paina 1st month later 2nd month later \( {\begin{array}{c}P- value\ \\ {} within\ group\end{array}}^c \)
Vitamin E 4.97 ± 2.36 2.45 ± 1.91 1.77 ± 2 < 0.001
Flaxseed oil 5.53 ± 2.21 2.77 ± 2.36 1.62 ± 2.16  
P value between groupb 0.26 0.56 0.73  
  1. a mean (standard deviation)
  2. b independent sample t-test
  3. c repeated measures test