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Table 2 The effect of vitamin D and magnesium supplementation compared with placebo on behavior in children with ADHD based on strengths and difficulties questionnaire1

From: The effect of vitamin D and magnesium supplementation on the mental health status of attention-deficit hyperactive children: a randomized controlled trial

Independent variables

Un adj.

Effect size

(Cohen’s d)

Adj.

Effect size (Partial Eta)

 

p-value

Covariate

p-value

Emotional problem

0.025

- 0.565

Sex

Age

BMI

Ritalin dose

Group

0.181

0.681

0.811

0.877

0.051

0.031

0.003

0.001

0.001

0.063

Conduct problem

0.096

- 0.416

Sex

Age

BMI

Ritalin dose

Group

0.053

0.018

0.010

0.007

0.117

0.06

0.092

0.110

0.130

0.041

Hyperactivity

0.28

- 0.269

Sex

Age

BMI

Ritalin dose

Group

0.061

0.966

0.070

0.15

0.275

0.06

0.001

0.055

0.035

0.02

Peer problem

0.003

- 0.760

Sex

Age

BMI

Ritalin dose

Group

0.110

0.001

0.002

0.002

0.006

0.045

0.165

0.156

0.157

0.122

Prosocial

0.18

- 0.334

Sex

Age

BMI

Ritalin dose

Group

0.248

0.085

0.106

0.019

0.170

0.023

0.049

0.044

0.090

0.031

Total difficulties

0.005

- 0.712

Sex

Age

BMI

Ritalin dose

Group

0.017

0.045

0.018

0.013

0.009

0.093

0.067

0.091

0.100

0.112

Externalizing

0.105

- 0.404

Sex

Age

BMI

Ritalin dose

Group

0.026

0.151

0.011

0.013

0.120

0.081

0.035

0.110

0.109

0.042

Internalizing

0.001

- 0.855

Sex

Age

BMI

Ritalin dose

Group

0.052

0.041

0.141

0.070

0.003

0.061

0.070

0.036

0.054

0.140

  1. For comparison of continus variables ANCOVA test has been used
  2. BMI, body mass index