Table 3.
Multiple regression analysis on factors affecting sleep quality (i.e., Pittsburgh Sleep Quality Index; PSQI) by interpersonal interaction (real and internet).
| RIIS Model | IIIS Model | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| B | SE | Beta | 95% CI | p | B | SE | Beta | 95% CI | p | |
| Independent variable | ||||||||||
| Sex (Ref: Male) | −0.31 | 0.21 | −0.05 | −0.72,0.10 | 0.14 | −0.34 | 0.21 | −0.05 | −0.75,0.07 | 0.11 |
| Age | 0.00 | 0.08 | 0.00 | −0.15,0.15 | 0.98 | −0.00 | 0.08 | 0.00 | −0.15,0.15 | 1.00 |
| BMI | 0.10 | 0.03 | 0.01 | −0.05,0.06 | 0.69 | −0.00 | 0.03 | 0.00 | −0.05,0.05 | 0.96 |
| Exercise habit (Ref: 0–1 days) | ||||||||||
| 2–3 days | −0.04 | 0.23 | −0.01 | −0.49,0.42 | 0.88 | −0.08 | 0.23 | −0.01 | −0.54,0.37 | 0.72 |
| ≥4 days | −0.30 | 0.27 | −0.04 | −0.83,0.24 | 0.28 | −0.35 | 0.27 | −0.05 | −0.89,0.18 | 0.19 |
| Monthly allowance | 0.14 | 0.11 | 0.05 | −0.07,0.35 | 0.19 | 0.14 | 0.11 | 0.05 | −0.07,0.35 | 0.19 |
| Girl/boyfriend (Ref: None) | 0.63 | 0.23 | 0.09 | 0.17,1.09 | <0.01 * | 0.61 | 0.23 | 0.09 | 0.16,1.07 | <0.01 * |
| Living place (Ref: Home) | ||||||||||
| School dormitory | 0.75 | 0.33 | 0.08 | 0.11,1.39 | 0.02 * | 0.71 | 0.33 | 0.07 | 0.07,1.36 | 0.03 * |
| Off-campus rental house | −0.11 | 0.31 | −0.01 | −0.72,0.49 | 0.72 | −0.11 | 0.31 | −0.01 | −0.72,0.50 | 0.73 |
| RIIS | −0.05 | 0.01 | −0.13 | −0.08,−0.03 | <0.01 * | -- | -- | -- | -- | -- |
| IIIS | -- | -- | -- | -- | -- | 0.04 | 0.01 | 0.09 | 0.01,0.06 | <0.01 * |
| F-value | 4.05 * | 3.10 * | ||||||||
| R2 | 0.04 | 0.03 | ||||||||
| Adjusted R2 | 0.03 | 0.02 | ||||||||
* p < 0.05; B: regression coefficient; S.E.: standard error; CI: confidence interval; PSQI: Pittsburgh Sleep Quality Index; RIIS: Real Interpersonal Interaction Scale; IIIS: Internet Interpersonal Interaction Scale.