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Table 3 Mean change in depressive symptomatology from baseline to follow-up

From: Effectiveness of lithium in subjects with treatment-resistant depression and suicide risk: results and lessons of an underpowered randomised clinical trial

  Lithium + Usual care (n = 27) Usual care (n = 22) P
QIDS at baseline, mean (SD) 16.81 (4.05) 20.05 (2.89)  
Mean change (SD) [confidence interval] −7 (8.2) [−10.2, −3.80] −6.1 (5.7) [−8.62, −3.56] 0.951
  1. Legend: SD = Standard deviation.