Table 3.

Frustration levels (means and SEM) at baseline and during the frustration tolerance task, for the groups with low, intermediate, and high levels of sickness and sleep health stressors (the sleep duration groups was divided into short, normal, and long sleepers).

	Low/Short		Intermediate/Normal		High/Long
	Baseline	Task	Baseline	Task	Baseline	Task
Depression-like sickness***	12.6 (0.9)	34.1 (1.9)***	32.5 (1.5)	42.6 (1.9)***	63.8 (2.7)	56.8 (2.6)***
Infection-like sickness***	17.2 (1.1)	37.6 (1.9)***	35.1 (1.7)	44.7 (2.0)***	56.2 (2.5)	49.9 (2.4)*
Self-rated health***	58.3 (2.1)	50.6 (2.0)*	36.7 (1.5)	46.3 (1.7)***	26.0 (2.1)	40.2 (2.8)***
Sleepiness*	24.7 (1.4)	36.1 (1.9)***	36.6 (1.9)	48.5 (2.2)***	45.1 (2.2)	47.2 (2.2)
Sleep quality (n.s.)	45.7 (2.3)	48.1 (2.4)	38.6 (2.0)	46.6 (2.3)	29.7 (1.5)	41.3 (1.8)
Sleep duration (n.s.)	33.5 (1.8)	43.5 (2.2)	35.4 (1.7)	43.2 (1.8)	34.8 (1.9)	46.9 (2.4)

Note that low depression-like sickness, low infection-like sickness, and low sleepiness indicate better health (i.e., less stress), while low sleep quality and low self-rated health indicate a worse level of the stressor. Short sleep duration refers to < 7 h, normal sleep duration refers to ≥ 7 to < 9 h, and long sleep duration to ≥ 9 h. n.s. = non-significant interaction between the stressor and task-induced frustration. *in the first column indicates significance level for interaction effects between the stressor and task effect (baseline, task). Other columns with * indicate significance level for post-hoc task comparisons (baseline, task) for each stressor level in case a significant interaction effect was evident, *p < .05, **p < .01, ***p < .001.