Table 2.
Sleep variables for Val/Val and Met carriers
| Variables | Val/Val carriers (n = 79) | Met carriers (n = 28) | t values | p values |
|---|---|---|---|---|
| Stage N1 sleep (min) | 81.4 ± 33.7 | 82.1 ± 41.7 | −0.1 | n.s. |
| Stage N2 sleep (min) | 196.2 ± 53.1 | 192.8 ± 64.2 | 0.3 | n.s. |
| Stage N3 sleep (min) | 23.0 ± 26.2 | 31.6 ± 29.7 | −1.4 | n.s. |
| REM sleep (min) | 53.5 ± 24.3 | 49.9 ± 23.0 | 0.7 | n.s. |
| Total sleep time (min) | 354.1 ± 66.6 | 356.3 ± 77.5 | −0.2 | n.s. |
| Number of awakenings | 47.9 ± 20.1 | 45.3 ± 26.0 | 0.6 | n.s. |
| Sleep efficiency (%) | 76.8 ± 12.1 | 76.9 ± 13.0 | −0.02 | n.s. |
| Longest sleep bout (min) | 55.8 ± 18.1 | 56.6 ± 20.9 | −0.2 | n.s. |
| Slow-wave activity power (μV2/30 s) | 222.9 ± 112.1 | 260.0 ± 158.1 | −1.3 | n.s. |
| Apnea–hypopnea index | 20.3 ± 17.1 | 18.9 ± 15.1 | 0.4 | n.s. |
| Time with oxygen saturation <90% (min) | 7.1 ± 15.2 | 13.3 ± 22.7 | −1.6 | n.s. |
Values are reported as the mean ± SD. n.s., not significant.