title: Erratum.
abstract: Lee J, Takeuchi H, Fervaha G, Sin GL, Foussias G, Agid O, Farooq S, Remington G. Subtyping schizophrenia by treatment response: antipsychotic development and the central role of positive symptoms. Can J Psychiatry. 2015;60(11):515-522. Original DOI: 10.1177/070674371506001107. In Table 2 of the above article, in "Proposed criteria for clozapine resistance" for "Current illness severity," the CGI-SCH positive was stated as "> 4" but it should be "CGI-SCH positive ≥ 4." The corrected table is below. [Table: see text].