Dencker 1973.

Methods	Allocations: randomised. Blindness: double. Duration: 1 year (3 phases: adjustment ‐ 3 months, 1st maintenance ‐ 3 months, 2nd maintenance ‐ 6 months).
Participants	Diagnosis: schizophrenia. History: duration ill >5years. N=67. Age: mean 41 years, range 18‐65. Sex: 51M, 14F. Setting: community & hospital.
Interventions	1. Pipothiazine palmitate: dose mean 50 mg/IM/month, range 25‐400 mg/IM. N=31. 2. Fluphenazine decanoate: dose mean 6.25 mg/IM/month, range 3.1‐50 mg/IM. N=34.
Outcomes	Global rating. Leaving the study early. Additional medication. Adverse effects: EPS, TESE. Depression: HRSD. Unable to use ‐ Mental state: BPRS (no SD). Cognitive function: handwriting test (no usable data). Work capacity: ADL, SRE (no usable data).
Notes	Authors contacted.
Risk of bias
Bias	Authors' judgement	Support for judgement
Allocation concealment?	Unclear risk	B ‐ Unclear