Albert 1980.

Methods	Allocation: randomised. Blindness: double. Duration: 39 weeks (drug stabilization period, 2 months ‐ 3 treatment groups).
Participants	Diagnosis: schizophrenia. History: chronic illness, average length of hospitalisation 16‐21 years. N=33. Age: "mid 40s". Sex: all male. Setting: not reported.
Interventions	1. Pipothiazine palmitate: dose 100 mg/IM/month. N=11. 2. Pipothiazine palmitate: dose 150 mg/IM/month. N=11. 3. Fluphenazine enanthate: dose 50 mg/IM/biweekly. N=11.
Outcomes	Leaving the study early. Additional medication. Adverse effects. Unable to use ‐ Global impression: CGI (no SD). Mental state: BPRS (no SD). Adverse effects: NOSIE (no SD).
Notes	Authors contacted.
Risk of bias
Bias	Authors' judgement	Support for judgement
Allocation concealment?	Unclear risk	B ‐ Unclear