Table 2.

Changes in Sleepiness and Well-Being from Baseline to Follow-ups

	Baseline to 1 month			1–9 months			Baseline to 9 months
	Mean ± SEM	p	d	Mean ± SEM	p	d	Mean ± SEM	p	d
Sleepiness
KSS score	−0.39 ± 0.11	<0.001	0.20	0.13 ± 0.14	0.39	0.07	−0.45 ± 0.16	0.01	0.23
Problems staying awake	−0.19 ± 0.07	0.01	0.22	−0.04 ± 0.08	0.64	0.05	−0.27 ± 0.09	0.002	0.33
Refreshed after waking	0.20 ± 0.06	0.001	0.26	0.14 ± 0.08	0.08	0.17	0.26 ± 0.10	0.01	0.28
Well-being
Depression score	−0.97 ± 0.39	0.02	0.20	−0.28 ± 0.39	0.47	0.07	−1.22 ± 0.48	0.01	0.27
Positive mood	0.30 ± 0.37	0.41	0.04	0.29 ± 0.53	0.59	0.05	1.07 ± 0.56	0.06	0.16
Negative mood	−1.01 ± 0.34	0.004	0.16	0.06 ± 0.51	0.91	0.01	−0.98 ± 0.50	0.05	0.16

d, Cohen’s d. Significant findings are indicated in bold.