Table 4.

Average scores of combined type and its changes in the three study groups, before and after the treatment

Group	Number	Combined type
		Pre-treatment scores	Post-treatment scores	Changes	P-value *
		Mean ± SD †	Mean ± SD	Mean ± SD
Ritalin ®	14	31.85 ± 8.51	25.30 ± 9.52	6.82 ± 5.09	0.001
Omega-3	17	31.47 ± 8.86	22.23 ± 8.42	9.23 ± 7.67	0.001
Placebo	13	31.00 ± 4.33	30.11 ± 5.05	0.88 ± 2.88	0.290

^*ANOVA;

^† Standard deviation