SLIPP: A Multi-centre randomised trial assessing time spent in supine position during sleep in the third trimester of pregnancy with or without a position aid

This trial will test whether advice alone compared to advice and a pillow device best supports non-supine sleep using the Night Shift device as an objective measure of both sleep duration and position. This design could also be employed in the future for a roll out of sleep position interventions, but crucially the optimum intervention would need to be properly validated, which is what this trial aims to do.  

Recruitment is now completed with data collection continuing.