Table 1 Comparison of demographic and polysomnographic data between men and women groups
|  | Median (P25–P75) Men group (N = 28) | Median (P25–P75) Women group (N = 16) | P value |
|---|---|---|---|
Demographic variables | |||
 Age (years) | 25 (22–34.5) | 22.5 (21.5–25) | 0.157 |
 BDI score | 1 (0–3) | 4 (3–6) | < 0.001 |
 Social status |  |  | 0.336 |
  Unmarried | 60.7% | 75.0% | |
  Married | 39.3% | 25.0% | |
 Educational level |  |  | 0.165 |
  University students | 46.4% | 75.0% | |
  University graduates | 21.4% | 6.3% | |
  Non-university graduates | 23.1% | 18.7% | |
 Smoking |  |  | 0.552 |
  No | 92.9% | 87.5% | |
  Yes | 7.1% | 12.5% | |
 Alcohol |  |  | 0.832 |
  No | 78.6% | 81.2% | |
  Occasional | 21.4% | 18.8% | |
 Caffeine |  |  | 0.447 |
  No | 42.9% | 31.2% | |
  Yes | 57.1% | 68.8% | |
Polysomnographic variables | |||
 SL (min) | 20.83 (13.67–31.50) | 34.34 (19.67–61.00) | 0.038 |
 SE (%) | 87.33 (84.18–91.65) | 87.12 (83.03–93.34) | 0.961 |
 SPT (min) | 536.50 (509.33–564.00) | 510.84 (499.17–518.67) | 0.031 |
 TST (min) | 493.67 (466.67–515.50) | 476.00 (452.17–497.67) | 0.113 |
 WASO (%) | 6.87 (5.00–11.75) | 5.41 (2.72–11.17) | 0.223 |
  Stage 1 (%) | 6.90 (5.76–8.96) | 5.35 (4.21–6.68) | 0.017 |
  Stage 2 (%) | 51.70 (47.07–55.29) | 45.89 (41.84–53.90) | 0.118 |
  Stage 3 (%) | 6.06 (5.01–7.06) | 7.02 (5.24–7.65) | 0.278 |
  Stage 4 (%) | 7.27 (4.23–11.20) | 10.91 (5.87–13.06) | 0.134 |
  SWS (%) | 14.43 (10.32–16.99) | 16.93 (12.73–20.98) | 0.140 |
  REM (%) | 20.04 (17.75–21.71) | 22.19 (20.37–24.29) | 0.036 |
  REM latency (min) | 66.50 (58.17–77.17) | 52.50 (49.17–63.83) | 0.047 |