Table 1.
Characterization of the Sample
| Males | Females | |||||
|---|---|---|---|---|---|---|
| PSQI ≤5 | PSQI >5 | PSQI ≤5 | PSQI >5 | |||
| Number | 346 (70.8%) | 143 (29.2%) | 398 (68%) | 187 (32%) | ||
| Mean (SD) | Mean (SD) | |||||
| PSQI | 3.27 (1.3) | 7.62 (1.7) | t 213 = −27.2*** | 3.28 (1.3) | 8.18 (2.2) | t 252 = −28.0*** |
| Age | 27.9 (3.7) | 27.9 (3.4) | n.s. | 29.6 (3.6) | 29.5 (3.5) | n.s. |
| Education | 14.9 (1.7) | 14.5 (1.9) | t 241 = 2.3* | 15.2 (1.7) | 14.6 (1.9) | t 332 = 3.2** |
| Handedness | 62.6 (43) | 57.8 (45) | n.s. | 74.0 (40) | 65.6 (47) | t 322 = 2.1* |
| Income | 5.2 (2.2) | 4.6 (2.1) | t 485 = 3.0** | 5.3 (2.1) | 4.8 (2.2) | t 580 = 2.5* |
| BMI | 26.8 (4.4) | 27.0 (4.3) | n.s. | 25.8 (5.5) | 27.5 (6.1) | t 330 = −3.2*** |
| BP systolic | 128.4 (13.6) | 128.0 (12.0) | n.s. | 118.9 (13.2) | 121.4 (14.8) | t 575 = −2.0* |
| BP diastolic | 78.3 (10.7) | 78.7 (10.2) | n.s. | 74.3 (9.9) | 76.4 (11.5) | t 314 = −2.2* |
| Perceived stress | 46.3 (8.6) | 50.0 (9.2) | t 487 = −4.2*** | 47.2 (8.2) | 50.7 (9.0) | t 582 = −4.7*** |
| ASR internalizing problems (T) | 46.7 (10.1) | 52.0 (10.3) | t 487 = −5.3*** | 44.8 (11.0) | 49.7 (11.0) | t 583 = −5.0*** |
| Pain | 1.17 (1.4) | 1.8 (1.9) | t 204 = −3.6*** | 1.14 (1.5) | 1.95 (2.3) | t 267 = −4.4*** |
n.s., not significant.
*p ≤ 0.05, **p ≤ 0.01, ***p ≤ 0.001.