Table 1.
Background Data of All Participants
| Items | Stress Groups | Control Groups | Statistics | P-values | ||
|---|---|---|---|---|---|---|
| H-SR | L-SR | H-SR | L-SR | |||
| Sex (male/female) | 7/8 | 7/10 | 6/8 | 9/7 | X2 = 0.877 | 0.831 |
| Age (yr.) | 24.0 (23.0, 25.0) | 25.0 (24.0, 26.0) | 25.0 (24.5, 30.0) | 24.5 (24.0, 28.5) | H = 4.806 | 0.187 |
| BMI (Kg/m2) | 21.0±2.3 | 21.5±2.0 | 21.5±2.2 | 22.8±3.1 | F = 1.638 | 0.190 |
| PSQI (scores) | 3.3±1.4 | 2.9±1.2 | 3.3±1.5 | 3.0±1.5 | F = 0.314 | 0.815 |
| HAMD-17 (scores) | 4.5±1.3 | 3.8±1.3 | 4.4±1.3 | 3.8±1.5 | F = 1.097 | 0.358 |
| HAMA-14 (scores) | 4.5±1.2 | 3.5±1.5 | 4.1±1.5 | 3.4±1.7 | F = 1.821 | 0.153 |
| FIRST (scores) | 18.0 (16.0, 24.0)# | 13.0 (10.0, 14.0) | 19.9±3.2# | 12.1±2.3 | H = 46.081 | < 0.001 |
Notes: Normally or approximately normally distributed variables are presented as mean ± standard deviation and were analyzed using parametric tests; non-normally distributed variables are presented as P50 (P25, P75) and were analyzed using non parametric tests; # indicates a significant difference between the H-SR group and the L-SR group (P < 0.05).
Abbreviations: FIRST, Ford Insomnia Response to Stress Test; HAMA-14, 14-item Hamilton Anxiety Scale; HAMD-17, 17-item Hamilton Depression Rating Scale; H-SR or L-SR, high or low sleep reactivity; PSQI, Pittsburgh Sleep Quality Index.