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Table 5 PSS-14, SF-12 and Epworth scales: scores at D0, D7 and D28 and evolution between D0 and D28 for P and EXT groups

From: Effect of an oral supplementation with a proprietary melon juice concentrate (Extramel®) on stress and fatigue in healthy people: a pilot, double-blind, placebo-controlled clinical trial

  Scores Evolution between D0 and D28
  D0   D7   D28   P group    EXT group  
  P group EXT group P group EXT group P group EXT group t student p value t student p value
PSS-14 36.88 ± 7.95 34.00 ± 6.03 30.88 ± 9.47 27.04 ± 8.06 30.17 ± 8.90 23.61 ± 6.58 3.975 0.001 *** 5.767 0.000 ***
SF-12 17.09 ± 5.46 15.38 ± 4.53 12.52 ± 4.90 11.52 ± 4.27 11.52 ± 4.96 8.89 ± 3.29 4.570 0.000 *** 4.001 0.001 ***
Epworth 8.03 ± 3.55 7.66 ± 3.43 6.28 ± 4.25 6.48 ± 3.77 5.67 ± 4.55 6.17 ± 4.64 3.582 0.002 ** 1.971 0.065 t