Strengths and Limitations
The strength of the study include the multi-centre and randomisation design with good power and patient numbers. A limitation of the study was that it was impossible to blind the allocation to the investigator or the patient. However, the investigator had no part in observing any adverse events. The CTGs were interpreted and the need for intervention determined by the attending clinicians. Hyperstimulation was specifically defined and recorded by a third party studying the CTGs and blinded to the patient’s allocated group. The patient also reported contractions intervals, pain scores, satisfaction scores with validated standard pain and satisfaction assessment tools to minimize the potential bias. Allocations were omitted from the database so as to blind the analyst in order to prevent manipulation.