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Box plot for FACIT fatigue scores of patients enrolled in the melatonin and placebo groups is shown at each time point (baseline, completion of RT, 2 weeks post-RT, and 8 weeks post-RT). Higher FACIT fatigue scores indicate less fatigue and, therefore, improved QOL. The treatment effect as measured by the treatment by time interaction was not found to be statistically significant (type III P-value is .8313).
