Studies

Sample

Epidemiology

Andrade & Flores-Mendonza (2010)

135 schoolchildren of 5th, 6th and 7th grades of elementary school.

3.7% with Attention deficit disorder.

4.7% with Hyperactivity.

Aragonès et al. (2010)

A cross-sectional with 2,452,107 adults patients aged between 18 and 44, enrolled in a primary care program.

0.04%

Azevedo, Caixeta, Andrade, & Bordin (2010)

Indians of the Karajá tribe aged between 7 and 16 years.

24.5%

Blázquez-Almería et al. (2005)

2401 students of both sexes aged between 6 - 12 from 10 different educational centers in Barcelona and the Area of Vallès Occidental.

12%

Cardoso, Sabbag, & Beltrame (2007)

84 children aged between 6 and 16 years.

7%

Fayyad et al. (2007)

11,442 participants aged between 18 and 44, from 10 countries.

3.4%

Fontana et al. (2007)

461 students from 1st to 4th grade, aged between 6 and 12 years.

13%

Graaf et al. (2012)

7075 participants aged between 18 - 44, from 10 countries.

3.5%

Kessler et al. (2007)

3199 participants aged 18 - 44 years

4.4%

Lindblad, Weitoft, & Hjern (2010)

16,134 participants born between 1985 and 2000 in Sweden.

5.3%

Molinero et al. (2009)

Students aged between 6 and 16 years old from the city of Lyon, France.

6.6%

Montiel-Nava, Peña, & Montiel-Barbero (2003)

657 schoolchildren between 3 and 13 years old.

7.9%

Oscar & Alma (2010)

92 students aged between 9 to 19 years

19.5%

Pastura, Mattos, & Araújo (2007)

304 students of elementary school do College of Application of UFRJ         

8.6%

Pineda et al. (2001)

341 students of both sexes, aged between 4 and 17 years.

21.5%

Poeta & Rosa Neto (2004)

1898 students from grades 1 to 4, between the ages of 6 and 12.

5%

Pondé & Freire (2007)

774 public school students aged 6 to 12 years.

6.7%

Rowland et al. (2001)

362 students in grades 1 to 5.

16%

Scandar (2003)

801 students aged 6 to 9 years of primary school.

4.99%

Úrzua et al. (2009)

Parents and Teachers of 640 children aged between 6 and 11 years.

Pais e Professores de 640 com idades entre 6 e 11 anos.

It varied between 5% and 15% depending on the informant. When agreement between parents and teachers was required, prevalence dropped to 2%.

Vasconcelos et al. (2003)

403 pupils from primary school

17.1%