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. Author manuscript; available in PMC: 2023 Mar 23.
Published in final edited form as: J Clin Psychiatry. 2009 Feb 10;70(2):155–162. doi: 10.4088/jcp.08m04301

Table 2.

Prevalence of Subjects Receiving ≥ 4 Core Medications/Medication Groups, Stratified by Presence of an Individual Agent

Current Agent N Subjects
Taking < 4
Medications,
N (%)		 Subjects
Taking ≥ 4
Medications,
N (%)		 Cohen d
Lithium 266 225 (85) 41 (15) 0.03
Divalproex 1185 934 (79) 251 (21) 0.11
Carbamazepine 767 548 (16) 219 (31) 0.13
Lamotrigine 839 563 (17) 276 (39) 0.18
Other anticonvulsant 629 351 (56) 278 (44) 0.59
Atypical antipsychotic 1262 780 (62) 482 (38) 0.74
Antidepressant 1935 1251 (65) 684 (35) 0.78