Methodological Considerations
The advantages of our study include its randomized design and the high response rates of the follow-up questionnaires. Another strength is that the participants were asked to report their childbirth experiences at three different time points during their first year after birth. This made it possible to study how the experience of birth changes over time. Unfortunately, this study had a limited sample size, which was not sufficient to detect an effect in the 12-month follow-up. The sample size estimation was based on the primary outcome of the Room4Birth RCT (To explore the multidimensional phenomenon of childbirth experience, we chose to include three different measurements (VAS-OCE, FOBS, and CEQ2). Nevertheless, it is challenging to measure experiences quantitatively, since aspects such as context, social support, interpersonal relationships, and physical and emotional senses need to be taken into consideration (The place and space for birth is not just created through the physical design but also through those who inhabit and interact within the room (