Table 2.
Mixed-effects models for associations between social activity and concurrent mood, fatigue, and pain.
| Outcome and predictor | Coefficient (95% CI) | P valuea | |
| Sad mood |
|
|
|
|
|
Alone | 0.078 (−0.140 to 0.299) | .48 |
|
|
Time (hours) | −0.011 (−0.028 to 0.007) | .24 |
| Happy mood |
|
|
|
|
|
Alone | −0.300 (−0.25 to −0.079) | .008 |
|
|
Time (hours) | 0.004 (−0.014 to 0.021) | .69 |
| Stressb |
|
|
|
|
|
Alone | −0.064 (−0.268 to 0.141) | .54 |
|
|
Time 2 | 0.300 (0.068 to 0.532) | .01 |
|
|
Time 3 | 0.227 (−0.009 to 0.463) | .06 |
|
|
Time 4 | 0.155 (−0.083 to 0.393) | .20 |
|
|
Time 5 | −0.152 (−0.391 to 0.088) | .22 |
| Fatigueb |
|
|
|
|
|
Alone | 0.122 (−0.148 to 0.392) | .38 |
|
|
Time 2 | 0.260 (−0.054 to 0.574) | .11 |
|
|
Time 3 | 0.443 (0.126 to 0.760) | .007 |
|
|
Time 4 | 0.703 (0.383 to 1.024) | <.001 |
|
|
Time 5 | 1.520 (1.196 to 1.844) | <.001 |
| Pain |
|
|
|
|
|
Alone | 0.035 (−0.161 to 0.231) | .73 |
|
|
Time (hours) | 0.021 (0.005 to 0.036) | .01 |
aItalics indicate P<.05.
bModels for stress and fatigue use time as a categorical variable; coefficient values for Time 2 to Time 5 indicate the change in the outcome variable compared with Time 1.