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Table 3 Beck Depression Inventory version II (BDI-II) scores at baseline and endpoint

From: Long-term tolerability and maintenance of therapeutic response to sodium oxybate in an open-label extension study in patients with fibromyalgia

  Baseline Endpoint
Number 559 557
Mean BDI-II score (SD) 11.1 (8.15) 5.8 (7.03)
Median BDI-II score 10.0 3.0
Range in BDI-II score 0 to 56 0 to 40
BDI-II severity (score)   
  Minimal (0 to 13), number (%) 376 (67.3) 466 (83.7)
  Mild (14 to 19), number (%) 97 (17.4) 62 (11.1)
  Moderate (20 to 28), number (%) 67 (12.0) 21 (3.8)
  Severe (29 to 63), number (%) 19 (3.4) 8 (1.4)
  1. SD, standard deviation.