Table 2.
Regression estimates from models assessing the effects of stressful life events and sleep reactivity (FIRST) on total wake time (TWT). First scores were coded both as a continuous variable (Model 1) and a categorical variable (Model 2). For Model 2, beta coefficients for main effect and two-way interactions for FIRST represent relative change in TWT for high sleep reactive participants compared to low sleep reactive participants (i.e. Low FIRST as reference group).
| b | 95% Confidence Interval | P-value | ||
|---|---|---|---|---|
| MODEL 1 (continuous) | ||||
| Stressful life events | 1.49 | 1.30 | 1.69 | <.001 |
| FIRST | 0.43 | 0.31 | 0.54 | <.001 |
| Stressors × FIRST | 0.08 | 0.05 | 0.12 | <.001 |
| MODEL 2 (categorical) | ||||
| Stressful life events | 1.30 | 1.00 | 1.60 | <.001 |
| FIRST | 4.29 | 2.98 | 5.60 | <.001 |
| Stressors × FIRST | 0.42 | 0.18 | 0.81 | .04 |