Study	Reason for exclusion
Ahlfors 1973	Allocation: randomised. Participants: people with schizophrenia. Interventions: fluphenazine enanthate versus pipotiazine undecylenate. Outcomes: no usable data, authors contacted.
Angst 1975	Allocation: not randomised.
Aref 1980	Allocation: not randomised.
Arrojo 1978	Allocation: not randomised.
Astrup 1974	Allocation: not randomised.
Balon 1982	Allocation: not randomised.
Bechelli 1983	Allocation: randomised. Participants: people with schizophrenia. Intervention: oral pipothiazine, not depot.
Deberdt 1971	Allocation: not randomised.
Demerdash 1981	Allocation: not randomised.
Dencker 1980a	Allocation: not randomised.
Dom 1973	Allocation: not randomised.
Faltus 1974	Allocation: not randomised.
Floru 1975	Allocation: not randomised.
Gallant 1975	Allocation: not randomised.
Itil 1978	Allocation: not randomised.
Kistrup 1974	Allocation: not randomised.
Kistrup 1991	Allocation: not randomised.
Knudsen 1985	Allocation: not randomised.
Knudsen 1985b	Allocation: not randomised.
Lapierre 1983	Allocation: randomised. Participants: people with schizophrenia. Intervention: pipothiazine palmitate versus fluphenazine decanoate. Outcomes: no usable data.
Lopez1971	Allocation: not randomised.
Masiak 1976	Allocation: not randomised.
Matkowski 1979	Allocation: not randomised.
Pietzcker 1993	Allocation: randomised. Participants: people with schizophrenia. Interventions: not given.
Rojo 1971	Allocation: not randomised.
Ropert 1973	Allocation: not randomised.
Rysanek 1982	Allocation: not randomised.
Salvesen 1974	Allocation: not randomised.
Tanghe 1972	Allocation: not randomised.
Tunninger 1994	Allocation: not randomised.
Vranckx‐Haenen 1979	Allocation: not randomised.
Zonda 1992	Allocation: not randomised.