Table 3.
The relationship between blood lead concentration and types of ADHD in the literature (Literature Review)
| ADHD or ADHD-related symptoms | pb |
|---|---|
| ADHD |
+ Braun 2006 +Wang 2008 + Froehlich 2009 + Nigg 2008, 2010 + Ha 2009 +Kim2013 +Boucher2012 |
| Attention problems |
+ chiodo 2007 +Cho 2010 +Kim 2010 +Min2007 + Chiodo2004 + Nigg 2008 +Canfield2003 -Canfield2004 -Boucher2012 |
| Impulsivity |
+ Nigg 2008 +Nicolescu 2010 - Chiodo 2007 -Chiodo2004 +Boucher2012 |
| Hyperactivity |
+ Chiodo 2007 +Nigg 2008 +Cho 2010 +Nicolescu 2010 +Boucher2012 -Chandramouli2009 |
" - "
No significant association between lead exposure and types of ADHD
" + "
A significant association between lead exposure and types of ADHD