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. Author manuscript; available in PMC: 2013 Feb 1.
Published in final edited form as: Clin Neurophysiol. 2011 Jul 27;123(2):278–284. doi: 10.1016/j.clinph.2011.06.027

Figure 1.

Figure 1

Cohen’s standardized differences (Cohen’s d) at beginning, middle, and end of test battery for fatigue and neuropsychological performance variables. To show increasing or decreasing trends, Cohen’s d was calculated for Beatty total fatigue (Total fatigue), Stroop Color-Word Interference total errors (Interference error), and total completion time for both Stroop Color-Word (Word time) and Color-Word Interference (Interference time) conditions. Note: To show the increasing trend in total fatigue and in total errors, Cohen’s d was calculated using the formula (mean at other times – mean at beginning)/pooled standard deviation. To show the decreasing trend on total completion times, Cohen’s d was calculated using the formula (mean at other times – mean at end)/pooled standard deviation.