Table 3. Differences in perceived stress, reflection and self-compassion between 'before' and '6 months after' the mindfulness training
nBefore,Mean (SD)6 months after,Mean (SD)Mean difference, (95% CI) P valueCohen’s d
Perceived stress (PSS)2216.3 (6.1)13.5 (6.3)-2.9 (-5.4 to -0.4)0.025-0.5
Self-compassion (SCS)212.9 (0.7)3.7 (0.7)0.7 (0.4 to 1.0)0.0001.2
Reflection (GRAS)1787.7 (9.8)90.2 (10.9)2.5 (-0.7 to 5.7)0.1200.4
  • CI = confidence intervals. GRAS = Groningen Reflection Ability Scale. PSS = Perceived Stress Scale. SCS = Self-Compassion Scale.