Table 2.
Fixed and Random Effects of Daytime Napping Predicting Nocturnal Sleep
| Total sleep time | Wake after sleep onset | Sleep efficiency | Sleep onset latency | |
|---|---|---|---|---|
| Fixed effects | b (SE) | b (SE) | b (SE) | b (SE) |
| Nap duration | 1.89 (1.57) | 0.02 (0.00)* | −0.03 (0.01) | 0.03 (0.01)* |
| Random effects | Estimate (SE) | Estimate (SE) | Estimate (SE) | Estimate (SE) |
| Intercept variance | 1223.29 (123.83)* | 0.02 (0.00)* | 0.26 (0.02)* | 0.07 (0.01)* |
| Slope-intercept covariance | −26.10 (83.55) | −0.00 (0.00) | −0.00 (0.01) | −0.00 (0.00) |
| Slope variance | 316.17 (87.76)* | 0.00 (00) | 0.00 (0.00) | 0.00 (0.00) |
*p < .01.
All models included the following covariates: age, race, gender.