Table 5.

Mean change between gum and control conditions in well-being and performance reported at the end of the workday.

Behind with work	−.13 (.21)	t(29) = .54, P = .54, Cohen's d = .11
Cognitive problems*	−.35 (.15)	t(29) = −2.31, P = .03, Cohen's d = .42
Job stress	−.12 (.12)	t(29) = −.94, P = .35, Cohen's d = .17
Fatigue	.02 (.11)	t(29) = .21, P = .84, Cohen's d = .04
Anxiety	−.49 (.36)	t(29) = −1.38, P = .18, Cohen's d = .25
Depression	.25 (.35)	t(29) = .72, P = .48, Cohen's d = .13
Inattention	−.37 (.25)	t(29) = −1.48, P = .15, Cohen's d = .27

^*Indicates significant effect of gum intervention, P < .05. Negative score indicates lower score in gum condition. Standard errors of the mean are in parentheses.