Table 1.
Demographics and Sleep Structure of Participants
| Characteristics | Total (N = 88) | SE more80% (N=43) | SE less80% (N=45) | p-value |
|---|---|---|---|---|
| Female (%) | 47.7% | 44.2% | 51.1% | 0.662 |
| Body Mass Index (kg/m2) | 29.6 ± 6.2 | 28.9 ± 5.4 | 30.3 ± 6.8 | 0.634 |
| Age (years) | 53 ± 15 | 48 ± 13 | 57 ± 15 | 0.014* |
| AHI (events/hr) | 12.6 (0.2–86.7) | 11.2 (0.2–83.7) | 13.9 (0.4–86.7) | 0.406 |
| Sleep efficiency (%) | 76.5 ± 15.1 | 88.3 ± 5.5 | 65.1 ± 12.3 | <0.001* |
| Sleep latency (min) | 12 (0–147) | 8 (0–42) | 23 (0 −147) | <0.001* |
| Total sleep time (min) | 334 (86–476) | 380 (293–477) | 240 (86–371) | <0.001* |
| Epworth sleepiness scale | 8 ± 4 | 8 ± 4 | 8 ± 5 | 0.923 |
Notes: Values are reported as mean ± standard deviation in case of normality; otherwise median (minimum – maximum) are reported. *p value <0.05.
Abbreviations: SE more80%, subset of subjects with sleep efficiency more than 80%; SE less80%, subset of subjects with sleep efficiency less than 80%; AHI, apnea/hypopnea index.