Dencker 1978.

Methods	Allocation: randomised. Blindness: double. Duration: 3 years.
Participants	Diagnosis: schizophrenia. History: not reported. N=36. Age: mean 41 years. Sex: 29M, 7F. Setting: hospitalised (1 year), community (2 years).
Interventions	1. Pipothiazine palmitate: dose mean 152.3 mg/IM/month. N=33. 2. Fluphenazine decanoate: dose mean 27.8 mg/IM/month. N=34.
Outcomes	Leaving the study early. Additional medication. Unable to use ‐ Mental state: BPRS (no data). Adverse effects: HRSD, EPS (no data). Work capacity: ADL (data not usable).
Notes	63% attrition is reported in the treatment group. Only data used is leaving the study early.
Risk of bias
Bias	Authors' judgement	Support for judgement
Allocation concealment?	Unclear risk	B ‐ Unclear