Table 3.

Average scores for each variable in the three clusters.

	High optimism (n = 24)	Moderate optimism (n = 43)	Low optimism (n = 19)	F(df)	p-value	${\eta }_p^2$
	M (SD)	M (SD)	M (SD)
Optimism*	3.49 (0.3)	2.71 (0.2)	1.92 (0.4)	169.19 (2)	0.001	0.80
Anger	1.12 (1.1)	1.03 (0.8)	1.62 (1.1)	2.69 (2)	0.074	0.06
Fatigue	1.18 (1.1)	1.20 (0.7)	1.29 (0.9)	0.09 (2)	0.911	0.00
Tension	1.76 (0.9)	1.85 (0.8)	2.04 (0.6)	0.65 (2)	0.523	0.02
Depression#	0.52 (0.8)	0.62 (0.6)	1.05 (0.9)	3.22 (2)	0.045	0.07
Vigor	2.73 (0.8)	2.95 (0.6)	2.67 (0.6)	1.84 (2)	0.166	0.04
Emotional exhaustion$	2.27 (1.0)	2.08 (0.6)	2.64 (0.8)	3.52 (2)	0.034	0.08
Despersonalization	1.98 (0.9)	1.79 (0.5)	2.01 (0.4)	1.11 (2)	0.333	0.03
Reduced efficacy	3.83 (0.7)	3.90 (0.5)	3.66 (0.6)	1.06 (2)	0.353	0.03

^*Differences between all groups.

^#Differences between group 1 and group 3.

^$Differences between group 2 and group 3. ${\eta }_{\text{p},}^2$ partial squared eta; between ${\eta }_{\text{p}}^2$ < 0.01 trivial effect, between 0.01 < ${\eta }_{\text{p}}^2$ < 0.06 small effect, between 0.06 < ${\eta }_{\text{p}}^2$ < 0.14 medium effect, and ${\eta }_{\text{p}}^2$ > 0.14 significant effect.