title: Prodromal psychosis detection in a counseling center population in China: an epidemiological and clinical study.
abstract: BACKGROUND
  To investigate through a two-stage clinic-based screening, the frequency and clinical features of risk for psychosis syndromes in a Chinese help-seeking sample.
  
  
  METHODS
  2101 consecutive new patients ages 15-45 were recruited at their first visit to the Shanghai Mental Health Center (SMHC) and screened with the Prodromal Questionnaire-Brief version (PQ-B) and questions about genetic risk. The Structured Interview for Prodromal Syndromes (SIPS) was administered to a sub-sample to estimate rates of psychosis and clinical high risk (CHR) for psychosis syndromes.
  
  
  RESULTS
  The frequency estimate of CHR syndromes in the total sample was 4.2%. Among 89 CHR patients, more than two-thirds met the criteria for Attenuated Positive Symptom Syndrome (APSS); and nearly a quarter met the criteria for Genetic Risk and Deterioration Syndrome (GRDS). The frequency of CHR syndromes peaked between the ages of 16 and 21years old and declined with subsequent age. The mean total and distress scores on the PQ-B in subjects with APSS and psychosis were significantly higher than in individuals with GDRS and patients without psychosis or CHR. High frequencies and strong correlations were found among some positive and non-specific symptoms in SIPS interviews. Among the 53 CHR participants who were followed-up for two years, 14 (26.4%) converted to psychosis. Of the non-converters, 53.8% were diagnosed with Axis I disorders.
  
  
  CONCLUSIONS
  This two stage screening method can enhance detection of Chinese CHR patients in clinical settings. The validity of the procedures for detecting CHR is supported by rates of transition to psychosis and of non-converter Axis I disorders that are comparable to those reported in meta-analyses.
authors.affiliation: Shanghai Mental Health Center, Shanghai Jiaotong University School of Medicine, Shanghai 200030, PR China.
authors.forename: Tianhong
authors.initials: T
authors.lastname: Zhang
authors.affiliation: Florida A&M University, Department of Psychology, Tallahassee, FL 32307, USA; Harvard Medical School, Department of Psychiatry, Beth Israel Deaconess Medical Center, 75 Fenwood Rd, Boston, MA 02115, USA.
authors.forename: Huijun
authors.initials: H
authors.lastname: Li
authors.affiliation: Harvard Medical School, Department of Psychiatry, Beth Israel Deaconess Medical Center, 75 Fenwood Rd, Boston, MA 02115, USA.
authors.forename: Kristen A
authors.initials: KA
authors.lastname: Woodberry
authors.affiliation: Harvard Medical School, Department of Psychiatry, Beth Israel Deaconess Medical Center, 75 Fenwood Rd, Boston, MA 02115, USA.
authors.forename: Larry J
authors.initials: LJ
authors.lastname: Seidman
authors.affiliation: Liaocheng People's Hospital, Shandong, PR China.
authors.forename: Lina
authors.initials: L
authors.lastname: Zheng
authors.affiliation: Shanghai Mental Health Center, Shanghai Jiaotong University School of Medicine, Shanghai 200030, PR China.
authors.forename: Hui
authors.initials: H
authors.lastname: Li
authors.affiliation: Shanghai Mental Health Center, Shanghai Jiaotong University School of Medicine, Shanghai 200030, PR China.
authors.forename: Shanshan
authors.initials: S
authors.lastname: Zhao
authors.affiliation: Shanghai Mental Health Center, Shanghai Jiaotong University School of Medicine, Shanghai 200030, PR China.
authors.forename: Yingying
authors.initials: Y
authors.lastname: Tang
authors.affiliation: Shanghai Mental Health Center, Shanghai Jiaotong University School of Medicine, Shanghai 200030, PR China.
authors.forename: Qian
authors.initials: Q
authors.lastname: Guo
authors.affiliation: Shanghai Mental Health Center, Shanghai Jiaotong University School of Medicine, Shanghai 200030, PR China.
authors.forename: Xi
authors.initials: X
authors.lastname: Lu
authors.affiliation: Shanghai Mental Health Center, Shanghai Jiaotong University School of Medicine, Shanghai 200030, PR China.
authors.forename: Kaiming
authors.initials: K
authors.lastname: Zhuo
authors.affiliation: Shanghai Mental Health Center, Shanghai Jiaotong University School of Medicine, Shanghai 200030, PR China.
authors.forename: Zhenying
authors.initials: Z
authors.lastname: Qian
authors.affiliation: Changi General Hospital, Department of Psychological Medicine, Singapore.
authors.forename: Annabelle
authors.initials: A
authors.lastname: Chow
authors.affiliation: Shanghai Mental Health Center, Shanghai Jiaotong University School of Medicine, Shanghai 200030, PR China.
authors.forename: Chunbo
authors.initials: C
authors.lastname: Li
authors.affiliation: Shanghai Mental Health Center, Shanghai Jiaotong University School of Medicine, Shanghai 200030, PR China.
authors.forename: Kaida
authors.initials: K
authors.lastname: Jiang
authors.affiliation: Shanghai Mental Health Center, Shanghai Jiaotong University School of Medicine, Shanghai 200030, PR China. Electronic address: xiao_zeping@126.com.
authors.forename: Zeping
authors.initials: Z
authors.lastname: Xiao
authors.affiliation: Shanghai Mental Health Center, Shanghai Jiaotong University School of Medicine, Shanghai 200030, PR China. Electronic address: jijunwang27@gmail.com.
authors.forename: Jijun
authors.initials: J
authors.lastname: Wang
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D002681:China / Q000453:epidemiology; D003376:Counseling; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D062706:Prodromal Symptoms; D011569:Psychiatric Status Rating Scales; D011613:Psychotherapy; D011618:Psychotic Disorders / Q000175:diagnosis* / Q000453:epidemiology* / Q000628:therapy; D018709:Statistics, Nonparametric; D011795:Surveys and Questionnaires; D055815:Young Adult
keywords: Clinical high risk; Early detection; Epidemiology; Help-seeking; Ultra-high risk