Table 4.

Comparison of Epworth Sleepiness Scale at post-intervention by study conditions, as well as within group changes from pre-to post-intervention

Epworth Sleepiness Scale	Estimate	SE	Lower 95% CI	Upper 95% CI	p-value	Effect Size
Between Group
CBT-I + Placebo vs. Placebo	-0.42	1.12	-2.64	1.81	0.71	-0.09
CBT-I + Armodafinil vs. Placebo	-0.67	1.12	-2.90	1.56	0.55	-0.15
Armodafinil vs. Placebo	-0.31	1.36	-3.04	2.42	0.82	-0.07
CBT-I + Armodafinil vs. CBT-I + Placebo	-0.26	1.12	-2.44	1.93	0.82	-0.06
	Post-Pre	SE	Lower 95% CI	Upper 95% CI	p-value	Effect Size
Within Group
CBT-I + Placebo	-1.91	0.73	-3.47	-0.35	0.02	-0.51
CBT-I + Armodafinil	-1.57	0.64	-2.93	-0.21	0.03	-0.07
Armodafinil	-1.71	1.29	-4.51	1.10	0.21	-0.47
Placebo	-1.31	0.87	-3.14	0.53	0.15	-0.24

^*P < 0.01,

^**P < 0.001;

A significance level of 0.0125 was used to adjust for multiple comparisons. (Asterisks denote improvements compared to placebo for between group analyses and from pre-intervention for within group analyses and improvements compared to placebo for between group analyses.); All analyses used multiple imputation; P-values for between group analyses are from ANCOVA controlling for values at time of consent; Effect size is Cohen’s D.