Limitations of the study
Some women declined to take part in the study when first approached. Data were not collected from these individuals and it may be that their reasons for declining trial entry were different from those women who declined randomisation. The number of women who declined participation when first approached about the study will be reported in the main trial results paper. Less than half of those who declined to be randomised completed a CTQ so some caution is required in generalising from the CTQ and interview results presented here on decliners. Education level was not collected so it is not possible to explore whether this affected the decision to participate in the trial.