Study	Reason for exclusion
Ahmed 1985	Brief abstract, data for the single result presented were not in a form we were able use in the review
Allahbadia 1992	Not clear that this was an RCT. States that ‘patients were selected at random’ but it was not clear that allocation to experimental and control groups was random
Asselineau 1996	Not randomised.
Caldeyro-Barcia 1960	1. Observational - Not RCT. 2. Not all women were in the first stage of labour.
Cobo 1968	Intervention not relevant. Study examining lying on side versus lying on back
Cohen 2002	No outcomes relevant to the review reported.
COMET 2001	The trial compared low-dose combined spinal epidural and low-dose infusion techniques and traditional epidural techniques
Danilenko-Dixon 1996	The purpose of this study was to compare cardiac output after epidural analgesia in both positions
Diaz 1980	This study use quasi-randomised group allocation, but more than a third of the experimental group were excluded from the analysis; women that did not comply with the protocol were excluded post randomisation
Divon 1985	No data relevant to the review were reported. Outcomes - BP, uterine work and beat to beat variability
Ducloy-Bouthors 2006	Outcomes relevant to the review not reported
Hemminki 1983	In this study the comparison was between two management policies rather than two different treatments. One group was nursed in bed and one group was encouraged to mobilise but there were also other differences in the treatment the two groups received which may have had an effect on outcomes. Women nursed in bed had routine amniotomy, women in the ambulant group did not; monitoring was also different in the two groups. These differences in management mean that it is not possible to assess the effect of position on outcomes
Hemminki 1985	Compared ambulation with immediate oxytocin.
Hillan 1984	Only randomised for the second stage of labour.
Hodnett 1982	All bed care patients had an epidural and not all ambulant patients did
Liu 1989	Intervention not relevant, study deals with the second stage of labour
McCormick 2007	Study not completed - no results reported.
Melzack 1991	Cross-over design, no data reported for the first phase of the trial
Molina 1997	Cross-over design, no data reported for the first phase of the trial
Radkey 1991	Second stage of labour only.
Read 1981	Comparing ambulation with oxytocin.
Schmidt 2001	Does not fit primary objectives.
Schneider-Affeld 1982	No quantitative outcome data presented.
Solano 1982	Not randomised.
Wu 2001	Intervention not relevant to review outcomes. Study examining lying on one side rather than the other to correct fetal malpresentation

BP: blood pressure

RCT: randomised controlled trial