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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