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Table 2 Salivary cortisol level of the ADHD group before treatment and control group

From: Effect of one-month treatment with methylphenidate on salivary cortisol level of attention deficit hyperactivity disorder children

Salivary cortisol level

Predominantly inattentive ADHD (n = 23)

Predominantly hyperactive/impulsive ADHD (n = 17)

Combined ADHD (n = 20)

ADHD group (n = 60)

Control group (n = 60)

Z, P1

Z, P2

Z, P3

Z, P4

KW, P5

Median (min-max)

17.87 (9.99–47.81)

16.99 (1.31–36.85)

15.89 (4.33–82.64)

16.92 (1.31–82.64)

23.54 (9.27–54.62)

− 0.58, 0.562

− 2.1, 0.036*

− 1.856, 0.064

2.07, 0.038

0.742, 0.690