Robak 1973.

Methods	Allocation: randomised. Blindness: open. Duration: 6 months.
Participants	Diagnosis: schizophrenia. History: duration ill ˜ 25 years. N=48. Age: <20‐69 years. Sex: 17F, 31M. Setting: hospital.
Interventions	1. Pipothiazine palmitate: dose mean 113.4 mg/IM/month. N=24. 2. Control group (different oral antipsychotics) no further details. N=24.
Outcomes	Leaving the study early. Unable to use ‐ Mental state: BPRS (no data). Behaviour: NOSIE (no data).
Notes
Risk of bias
Bias	Authors' judgement	Support for judgement
Allocation concealment?	Unclear risk	B ‐ Unclear