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Table 1 Sociodemographic data of the ADHD and control groups

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

Variables ADHD group, n = 60(%) Control group, n = 60(%) Test of significance, p value
Age, years
 Mean ± SD 8.65 ± 2.11 8.68 ± 2.05 t = 0.086, p = 0.932
 Min-max 6–12 6–12
Sex
 Male 46 (76.7%) 46 (76.7%) χ2 = 0, p = 1.0
 Female 14 (23.3%) 14 (23.3%)
Education
 High 22 (36.7%) 21 (35%) χ2 = 0.325, p = 0.850
 Moderate 32 (53.3%) 31 (51.7%)
 Low 6 (10%) 8 (13.3%)
Occupation
 Professionals 10 (16.7%) 13 (21.7%) χ2 = 0.693, p = 0.707
 Office worker 31 (51.7%) 27 (45.0%)
 Manual worker 19 (31.7%) 20 (33.3%)
Income
 High 13 (21.7%) 12 (20.0%) χ2 = 157, p = 0.925
 Moderate 39 (65.0%) 41 (68.3%)
 Low 8 (13.3%) 7 (11.7%)
Parents’ smoking habit 23 (38.3%) 24 (40%) χ2 = 0.035, p = 0.852