Table 5. Cohen’s D and Weighting for 17 Attention Deficit Hyperactivity Disorder Studies.

Study	d	W a	Wd b
BehPajooh et al. (18)	1.68	0.37	0.62
Moradi et al. (29)	-3.15	2.63	-8.28
Salehi et al. (21)	-1.45	0.10	-0.15
Shoshtariet al. (30)	-1.06	0.55	-0.58
Dehghan et al. (24)	-2.40	0.21s	-0.48
Saheban et al. (26)	-3.99	4.03	-16.09
Yaghubi et al. (17)	-3.35	0.14	-0.47
Saadat (31)	-0.86	4.45	-3.83
Shafieian (32)	-0.89	0.27	-0.24
Hagighi (33)	-3.48	0.35	-1.22
Rahmanzadeh (34)	-4.66	0.58	-2.70
Abedi et al. (35)	2.16	1.79	3.80
Hashemi Nosrat Abad et al. (36)	-2.23	3.03	-6.76
Egeland et al. (37)	4.66	0.38	1.77
Miranda et al. (38)	-0.36	0.34	-0.12
Riahi et al. (39)	1.33	0.31	0.41
Hadianfard et al. (28)	1.58	9.09	14.36
Summation	∑d = -16.47	∑w = 28.62	∑wd = -19.51

^a Weight.

^b Weight × d.