Table 3.

Mixed-effects models for associations between social activity and next-survey mood, fatigue, and pain.

Outcome and predictor		Coefficient (95% CI)	P valuea
Sad mood
	Alone	0.102 (−0.141 to 0.348)	.41
	Time (hours)	−0.012 (−0.037 to 0.013)	.24
Happy mood
	Alone	−0.034 (−0.301 to 0.226)	.80
	Time (hours)	0.011 (−0.016 to 0.038)	.43
Stressb
	Alone	0.008 (−0.230 to 0.250)	.95
	Time 3	−0.100 (−0.353 to 0.154)	.44
	Time 4	−0.170 (−0.425 to 0.085)	.19
	Time 5	−0.502 (−0.757 to −0.247)	<.001
Fatigueb
	Alone	0.365 (−0.169 to 0.898)	.18
	Time 3	0.546 (0.008 to 1.083)	.048
	Time 4	0.846 (0.296 to 1.395)	.003
	Time 5	1.975 (1.427 to 2.523)	<.001
	Alone × Time 3	−0.511 (−1.196 to 0.176)	.15
	Alone × Time 4	−0.584 (−1.273 to 0.110)	.10
	Alone × Time 5	−1.089 (−1.780 to −0.396)	.002
Pain
	Alone	−0.016 (−0.240 to 0.206)	.89
	Time (hours)	0.027 (0.010 to 0.050)	.02

^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.