Study	Reason for exclusion
Arulkumaran 1987	Intervention and control group received the same induction agent with different methods of administration.
Augensen 1987	Both groups received the same intervention.
Bakos 1987	Inadequate randomization . Relevance to Review: Cross over trial comparing amniotomy with intravenous oxytocin for induction of labour. Subgroup analyses not possible from available data. Patients who received oxytocin and amniotomy only started with both interventions 4 hours after commencing induction with either one of the two interventions. (Possibility does exist that it may be augmentation.)
Breart 1982	Deals with management of labour, not specified as induction Timing study. Same intervention both arms.
Breart 1991	Deals with management of labour, not specified as induction of labour. '... choice of policies to be evaluated is based on policies applied and the results observed in Dublin ...' active management of labour.
Bremme 1984	Compares amniotomy with oral PGE2.
Calder 1975	Compares intravenous oxytocin + amniotomy with intravenous PGE2 + amniotomy.
Cameron 1985	No primary outcomes reported.
Cameron 1988	No numerators/denominators given. Data sought from authors.
Casey 1993	All patients in control group did not receive amniotomy and intravenous oxytocin.
Chia 1993	IUPC monitoring. Fetal monitoring with different methods. Both arms same induction agent.
Chua 1991	Both groups received the same intervention/ induction agent: methods of administration differed.
Cole 1975	Same intervention both arms. Randomization on timing.
D'Souza 1986	Neonatal effects of oxytocin induction. Outcome of labour not investigated.
Engleman 1979	Same intervention both arms. Compares spontaneous versus induced labour. Cost analysis study.
Gihwala 1987	Amniotomy augmentation of labour. One patient included with an intrauterine death.
Goeree 1995	Cost effectiveness study. Methods of induction not investigated.
Heden 1991	Method of randomization not accepted (folder number).
Henry 1969	Too much uncertainty regarding randomization, oxytocin administration and whether amniotomy was performed or not.
Katz 1983	Same intervention both arms of study.
Leijon 1979	No primary outcomes reported. Investigation of effect of induction of labour, not methods for induction.
Leijon 1980	No primary outcomes reported.
Lo 1994	Not a randomized controlled trial (patient allocation by alternation).
Lykkesfeldt 1979	Intravenous oxytocin + amniotomy compared to oral PG.
Mahmood 1992	Compares PGE2 with amniotomy(alone). Cross over occurred. Oxytocin augmentation, not induction.
Mancuso 1996	No primary outcomes reported.
Mercer 1991	Both groups received the same intervention. 'Priming of cervix' prior to induction.
Misra 1994	Randomization unclear and amniotomy only performed after uterine contractions were present (augmentation).
Nilsson 1984	No primary outcomes reported. Compares oral PGE2 with oxytocin.
Orhue 1993a	Both groups received the same intervention.
Orhue 1993b	Both groups received the same intervention.
Orhue 1994	Both groups received the same intervention.
Pavlou 1978	Both groups received the same intervention.
Reid 1995	Both groups received the same intervention. Patients included in study with prior PG administration: no subgroup analyse in order to exclude them.
Sande 1983	Large number of discrepancies without mentioning reasons, unspecified randomization.
Secher 1981	Inadequate randomization with a large discrepancy in numbers.
Sellers 1988	Uncertainty whether it is an abstract from the study published by Taylor in 1993.
Sivasuriya 1978	No primary outcomes reported. Effect of various induction methods of labour on neonate given as means.
Steer 1976	Some participants not randomly selected.
Steer 1985	Both groups received the same intervention.
Suikkari 1983	Allocation on parity.
Thomas 1974	Both groups received the same intervention. Compares method of administration.
Tylleskar 1978	No primary outcomes reported.
Tylleskar 1979	No primary outcomes reported.
Varma 1981	Not a randomized controlled trial.
Ward 1991	No primary outcomes reported.
Westergaard 1983	Compares oral PGE2 with oral oxytocin.
Witter 1987	Same intervention both arms. Amniotomy possibly as augmentation.
Witter 1989	Prediction trial.

IUPC = intra uterine pressue catheter 
 PG = prostaglandin