Table 2.
Descriptive statistics (M ± SD) for the task parameters; statistics of the comparison between FMS patients and controls (main effect of group in the ANOVAs). The M 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(N = 52) | Controls(N = 28) | F | p | η p 2 | |
|---|---|---|---|---|---|
| Hit rate | .92 ± .09 | .96 ± .04 | 6.60 | .012 | .08 |
| False alarm rate | .29 ± .19 | .22 ± .22 | 2.11 | .151 | .03 |
| M of RT | 494.50 ± 145.96 | 427.34 ± 78.87 | 5.10 | .027 | .06 |
| Intraindividual SD of RT | 218.99 ± 115.58 | 157.02 ± 91.91 | 1.00 | .32 | .01 |
| mu of RT | 293.98 ± 132.57 | 269.47 ± 80.02 | 0.80 | .38 | .01 |
| sigma of RT | 113.93 ± 92.45 | 83.15 ± 63.06 | 1.85 | .18 | .02 |
| tau of RT | 200.52 ± 102.64 | 157.87 ± 108.58 | 4.68 | .034 | .06 |
Notes. M: mean; SD: standard deviation; RT: reaction time; N: number of cases; F: statistic of the group effect in the ANOVA; p: p value of the group effect; ηp2: effect size of the group effect (partial eta squared).