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Table 3 Change of HADS total score (t0: baseline; t1:1 month; t2: 6 months; t3: 12 months, t4: 24 months)

From: Health related quality of life and mental distress after PCI: restoring a state of equilibrium

  t0-t1 t1-t2 t2-t3 t3-t4 p t0-t1* p t1-t2* p t2-t3* p t3-t4*
median −1 0 0 0 0.020 0.272 0.342 0.571
(Q1/Q3) (−4/1) (−2/2) (−2/3) (−2/2)
mean −1.33 0.35 0.38 −0.4
(SD) (5.53) (4.53) (4.09) (4.57)     
  1. * Wilcoxon-test