Table 6.

Prevalence of neurological soft signs in first-episode psychosis

Authors (year)	N	Study population	Instrument to assess NSS	Prevalence of NSS (%)
The Scottish Schizophrenia Research Group [9]	49	First-episode schizophrenia	NES scale	20
Flyckt et al. [59]	31	First-episode psychosis	NES scale	78
Browne et al. [4]	35	First-episode schizophrenia or schizophreniform disorder	NES scale CNE scale	97
Emsley et al. [60]	66	First-episode psychosis, schizophreniform disorder or schizoaffective disorder	NES scale	68
Ruiz-Veguilla et al. [36]	92	First-episode psychosis	NES scale	45
Our study	61	First-episode psychosis	NSS scale	84

CNE Condensed Neurological Examination, NES Neurological Evaluation Scale, NSS neurological soft signs, NSS scale Neurological Soft Signs scale