Patient preference of level I, II and III sleep diagnostic tests to diagnose obstructive sleep apnoea among pregnant women in early to mid-gestation.

Pregnant women being assessed for OSA by 24 weeks gestation preferred to undertake level III sleep studies and found level III easier to use, more convenient and most acceptable to repeat than Level I and II studies. Given autonomy is an important principle, patient preference of sleep diagnostic tests should be taken into consideration in sleep clinical services and research involving pregnant women.