Chai 1998.

Methods	Allocation: randomised. Blindness: open. Duration: 12 weeks preceded by a one week washout period.
Participants	Diagnosis: schizophrenia. History: length of illness 1‐10 years. N=209. Age: mean 30 years. Sex: 127M, 82F. Setting: hospital.
Interventions	1. Pipothiazine palmitate: dose 50‐150 mg/4 weeks. N=103. 2. Haloperidol decanoate: dose 50‐150 mg/4 weeks. N=57. 3. Fluphenzine decanoate: dose 25‐75 mg/2 weeks. N=49.
Outcomes	Global impression: CGI. Mental state: BPRS, SANS, SAPS. Adverse effects: TESS, SAS.
Notes	Skewed data.
Risk of bias
Bias	Authors' judgement	Support for judgement
Allocation concealment?	Unclear risk	B ‐ Unclear