Polysomnography data
| Normal subjects | Controlled asthma | Uncontrolled asthma | |
| TST (min) | 392.8 (103.3) | 370.7 (109.6) | 305.9 (86.1) |
| Sleep efficiency (%) | 80.4 (10.8) | 81.6 (15.0) | 77.9 (14.8) |
| REM sleep (min) | 80.2 (20.3) | 82.7 (38.1) | 55.4 (19.6)* |
| RDI total | 0.0 (0–0.8)† | 4.3 (2.4–5.5)† | 7.4 (4.4–9.7)† |
| RDI during REM sleep | 0.0 (0–0.6)† | 2.1 (0.3–4.3)† | 6.5 (3.5–9.2)† |
There was no significant difference in overall sleep time, but REM sleep duration was reduced in uncontrolled asthma and RDI was elevated in those with asthma.
↵* Difference between normal group versus uncontrolled asthma (p=0.005) and controlled versus uncontrolled asthma (p=0.038).
↵† Significant difference (p<0.001).
RDI, respiratory disturbance index, non-normally distributed and presented as median (IQR); REM, rapid eye movement; TST, total sleep time.