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Table 2 Basic characteristics and mean differences of favored and un-favored foods scores in the two groups

From: The effect of dietary education on ADHD, a randomized controlled clinical trial

Variable Group Significance
Treatment Control
Mean (standard deviation) Mean (standard deviation)
Mean (SD) years of age 8.6 (2.4) 8.3 (1.8) t = .76, df = 104, P = 0.4
Dosage of methylphenidate during the trial (mg/day) 12.7 (5.4) 11.9 (4.6) t = .7, df = 83, P = 0.4
Dosage of methylphenidate before the trial (mg/day) 9.7 (7.2) 9.3 (2.9) t = .3, df = 98, P = 0.7
Body mass index 16.1 (2.4) 15.4 (2.6) t = 1.3, df = 102, P = 0.1
Inattentiveness score at baseline 15.7 (6.0) 15.8 (5.0) t = .08, df = 104, P = 0.9
Inattentiveness score at the end 12.5 (5.3) 11.6 (5.8) t = .7, df = 78, P = 0.4
Hyperactivity/impulsivity score at baseline 17.7 (6.0) 17.6 (5.1) t = .03, df = 104, P = 0.9
Hyperactivity/impulsivity at end 13.9 (6.2) 13.1 (5.9) t = .5, df = 78, P = 0.5
The mean difference of favorite diet during the trial 2.6 (3.9) −.02 (1.9) t = 3.7, df = 78, P < 0.0001
The mean difference of un-favorite diet during the trial −6.5 (5.2) −1.2 (3.7) t = 5.2, df = 78, P < 0.0001
The mean difference of inattentiveness score during the trial −3.3 (4.8) −4.0 (5.1) t = .7, df = 78, P = 0.4
The mean difference of hyperactivity/impulsivity score during the trial −3.7 (4.7) −5.0 (4.8) t = 1.1, df = 78, P = 0.2