Table 3. Pretest Mean and Standard Deviation for 17 Attention Deficit Hyperactivity Disorder Studies.

Study	Experimental	Control
Pretest
Beh Pajooh et al. (18)	23.50 (3.92)	24.20 (3.67)
Moradi et al. (29)	24.67 (2.13)	24.10 (3.33)
Salehi et al. (21)	18.73 (4.16)	18.73 (3.35)
Shoshtariet al. (30)	15.98 (5.28)	16.29 (3.67)
Dehghan et al. (24)	71.69 (3.44)	072.58 (4.40)
Saheban et al. (26)	35.10 (2.79)	35.25 (02.01)
Yaghubi et al. (17)	20.03 (7.63)	6.68 (2.54)
Saadat (31)	06.71 (1.86)	6.30 (1.45)
Shafieian (32)	09.81 (1.61)	10.00 (1.61)
Hagighi (33)	27.42 (1.67)	26.91 (2.09)
Rahmanzadeh (34)	45.13 (3.35)	45.00 (3.85)
Abedi et al. (35)	07.07 (2.18)	6.93 (2.17)
Hashemi Nosrat Abad et al. (36)	24.20 (4.84)	23.80 (5.06)
Egeland et al. (37)	29.56 (6.18)	29.68 (6.52)
Miranda et al. (38)	19.84 (8.54)	18.69 (12.27)
Riahi et al. (39)	46.00 (6.00)	45.00 (5.00)
Hadianfard et al. (28)	11.12 (1.31)	132.02 (1.82)

^a Abbreviation: mean ± SD, standard deviation.