Xu 2002.

Methods	Allocation: randomised. Blindess: unclear if single‐blind or open‐label. Duration: eight weeks Setting: inpatients, China Design: parallel
Participants	Diagnosis: schizophrenia (CCMD‐2‐R). N = 100. Sex: 21% female.. Age: average ˜ 46 years.
Interventions	1. Ginkgo (EGb 49.6 mg three times daily), n = 50 2. Placebo. N = 50 Stable neuroleptic medication: chlorpromazine
Outcomes	SAPS. SANS.
Notes	Translation obtained from Prof. Yiming Wang.

BPRS ‐ Brief Psychiatric Assessment Scale; CCMD‐2‐R ‐ Chinese Classification of Mental Disorders; DSM ‐ Diagnostic and Statistical Manual; IU ‐ international units; PANSS ‐ Positive and Negative Symptoms Scale; SANS ‐ Scale for the Assessment of Negative Symptoms; SAPS ‐ Schedule for the Assessment of Positive Symptoms