Table 2.
Sleep Characteristics of the Study Population
| With metabolic syndrome (n=49) | Without metabolic syndrome (n=71) | P value | |||
|---|---|---|---|---|---|
| RDI score (events/hr) (n=100) | 13.9±14.2 | 10.1±16.3 | 0.015 | ||
| SpO2 (%) (n=100) | 96.2±1.0 | 96.0±2.3 | 0.525 | ||
| OSAS (Y/N) | RDI <5 | RDI >5 | RDI <5 | RDI >5 | |
| 8 | 32 | 34 | 26 | 0.001a | |
| Actigraphy sleep efficiency (%) | 80.9±7.0 | 79.5±5.9 | 0.257 | ||
| Actigraphy sleep duration (min/night) | 363±48 | 352±51 | 0.229 | ||
| Subjective sleep duration (min/night) | 388±50 | 383±49 | 0.638 | ||
| PSQI global score (optimal, 0–5) | 8.1±3.1 | 8.2±2.5 | 0.770 | ||
| PSQI <5 | 10 | 9 | 0.247a | ||
| PSQI >5 | 38 | 61 | |||
| PSQI self-reported (hr) | 5.6±0.9 | 5.7±0.9 | 0.295 | ||
| Epworth sleepiness score (optimal, 0–10) | 7.7±4.3 | 8.7±4.7 | 0.243 | ||
| Epworth score >10 | 35 | 45 | 0.342a | ||
| Epworth score >10 | 12 | 13 | |||
a
Chi-squared test P value.
Significant P values are in bold.
OSAS, obstructive sleep apnea syndromes; RDI, respiratory disturbance index; PSQI, Pittsburgh Sleep Quality Index.