Table IV.
Fixed Effects and Interaction Terms (Child Sleep × Group) as Predictors of Parent Sleep
| Outcome |
Parent WASO (min) |
|||
|---|---|---|---|---|
| Fixed effect | b | SE | t | p |
| Child WASO mean (across) | 0.21 | 0.68 | 0.30 | .76 |
| Child WASO diff (within) | 0.03 | 0.08 | 0.33 | .74 |
| Group (JIA) | 30.64 | 64.70 | 0.47 | .64 |
| Child WASO mean × group | −0.16 | 0.75 | −0.22 | .83 |
| Child WASO diff × group | 0.24 | 0.11 | 2.24 | .03* |
| Age | −1.78 | 4.70 | −0.38 | .70 |
| Outcome |
Parent SE (%) |
|||
| Fixed effect | b | SE | t | p |
| Child SE mean (across) | 0.74 | 0.76 | 0.98 | .33 |
| Child SE diff (within) | −0.05 | 0.09 | −0.50 | .62 |
| Group (JIA) | 52.51 | 68.30 | 0.77 | .44 |
| Child SE mean × group | −0.66 | 0.81 | −0.82 | .41 |
| Child SE diff × group | 0.35 | 0.12 | 2.94 | .003** |
| Age | −0.17 | 0.97 | −0.18 | .86 |
| Outcome |
Parent SQ (%) |
|||
| Fixed effect | b | SE | t | p |
| Child SQ mean (across) | 0.40 | 0.16 | 2.55 | .01* |
| Child SQ diff (within) | 0.33 | 0.10 | 3.45 | .001** |
| Group (JIA) | −3.36 | 1.48 | −2.28 | .02* |
| Child SQ mean × group | 0.49 | 0.20 | 2.44 | .02* |
| Child SQ diff × group | 0.28 | 0.11 | 2.43 | .02* |
| Age | 0.37 | 0.13 | 2.78 | .006** |
Note. SE = sleep efficiency; WASO = wake after sleep onset; SQ = sleep quality reported in sleep diary; group fixed effect was entered as TD-0, JIA-1.
*p < .05; **p < .01.