Since the time of the OERP sessions (from November 2009 to May 2011), the prospective followup identified three CHR patients (1 male, 2 female) who developed threshold psychosis as determined by the “Presence of Psychosis” criteria in the SIPS/SOPS (i.e., a score of 6 on one of the five positive symptom domains; cf. Miller et al., 1999, 2003). These ‘converters’ were 16, 23 and 27 years old at the time of testing, with 10, 14 and 17 years of education, respectively. Their SIPS/SOPS scores were largely comparable to the overall patient sample, although converters tended to show more negative symptoms (M ± SD, positive, 9.3 ± 5.0; negative, 19.0 ± 6.9; disorganization, 9.3 ± 4.0; general, 12.0 ± 1.7; global assessment of function, 40.3 ± 2.1). Given that investigating whether olfactory deficits have predictive value for transition to psychosis in CHR individuals is the underlying purpose of the current study, descriptive summaries of the core dependent measures are also separately reported for these three converters.
