Table 3.

Mean (SD) effect of sleep on cognitive measures used in the study

Variable	Experimental Group				Control Group
	First Week		Second Week		First Week		Second Week
	X¯	SD	X¯	SD	X¯	SD	X¯	SD
MATH-CPT
Total Time (Sec)	767	141	628	111	948	335	822	315
SD Total Time	0.84	0.29	0.58	0.30	1.10	0.55	0.97	0.68
Anticipatory-Impulsive	0.11	0.32	0.16	0.38	0.24	0.56	0.38	0.88
Correct Responses	433	8.21	437	8.10	427	13.87	435	10.68
Overall Attention Levela	−1.13	0.64	−1.37	0.53	−0.17	1.03	−1.18	0.77
d2 Test of Attention
Total Signs Marked	396	58	461	74	382	50	422	67
Marked Minus Mistakes	381	55.48	444	76.40	359	43.81	408	65.04
Correct Responses	153	22.22	182	34.72	141	16.96	165	25.98
Total Mistakes	14.47	8.61	17.47	11.65	23.30	15.51	13.95	8.94
Missing Correct	12.94	8.52	13.94	9.26	19.80	13.77	12.60	8.56
Marked Wrong	1.53	1.07	3.53	6.06	3.50	3.91	1.35	1.69
Percentage Errors	3.61	2.18	3.92	2.76	5.91	3.66	3.03	2.08
Concentration Performance	151	21.97	179	37.51	138	17.32	163	26.35

^aA lower indicates of a better attention level.