Variability of Reaction Time as a Marker of Executive Function Impairments in Fibromyalgia

Table 2

Descriptive statistics () for the task parameters; statistics of the comparison between FMS patients and controls (main effect of group in the ANOVAs). The RT was controlled for in the group comparison of intraindividual SD, and mu was controlled for in the group comparisons of sigma and tau.

	FMS patients()	Controls()
Hit rate			6.60	.012	.08
False alarm rate			2.11	.151	.03
of RT			5.10	.027	.06
Intraindividual SD of RT			1.00	.32	.01
mu of RT			0.80	.38	.01
sigma of RT			1.85	.18	.02
tau of RT			4.68	.034	.06

Notes. : mean; SD: standard deviation; RT: reaction time; : number of cases; : statistic of the group effect in the ANOVA; : value of the group effect; : effect size of the group effect (partial eta squared)