Effects of Bright Light with Reduced Blue Light on Sleepiness on Rising: A Small Exploratory Study

Table 3

Effects of the interventions on the number of correct answers in the calculation task across the study. Data are presented as mean ± S.D.

Intervention	Day	Correct answers; (n=6)	P vs; Day 1	Mean; correct answers	P vs; No light
No light	1	377 ± 51	−	376 ± 35	−
	2	380 ± 36	0.684
	3	375 ± 32	0.833
	4	368 ± 24	0.917
50%-cut	5	375 ± 47	0.528	384 ± 47	0.859
	6	381 ± 26	0.463
	7	383 ± 54	0.399
	8	397 ± 63	0.028
30%-cut	9	394 ± 55	0.028	401 ± 53	0.085
	10	396 ± 51	0.058
	11	409 ± 63	0.028
	12	403 ± 55	0.043