Table 1

Demographic and clinical characteristics of study participants

CharacteristicGroup; no. or mean ± SD (range)
All TRD (n = 26)rTMS responders (n = 12)rTMS nonresponders (n = 14)
Age, yr38.4 ± 13.8 (20–70)40.0 ± 16.1 (20–70)36.7 ± 11.6 (25–59)
Gender
 Male1266
 Female1367
 Other101
IDS-SR30 baseline45.1 ± 12.9 (22–66)43.0 ± 12.4 (29–61)47.9 ± 13.5 (22–66)
IDS-SR30 final33.5 ± 18.0 (2–71)19.4 ± 11.2 (2–39)45.2 ± 12.9 (22–71)
Medication*
 None110
 Catecholamine agonist1899
 Catecholamine antagonist321
 Serotonin agonist20812
 Serotonergic18711
 Serotonergic–noradrenergic826
 Noradrenergic963
 Ion channel blocker1147
 GABA agonist12210
  • GABA = γ-aminobutyric acid; IDS = 30-item Inventory of Depressive Symptoms; rTMS = repetitive transcranial magnetic stimulation; SD = standard deviation; TRD = treatment-resistant depression.

  • * Refers to current psychoactive medication; medications are classified by their principal psychopharmacological mechanism.