Appendix 5.  Detail on Effect of Counseling and Education Interventions on Blood Lead Levels

There have been no controlled studies to evaluate whether counseling families to perform cleaning would be as effective in reducing blood lead levels as professional cleaning. Two randomized controlled trials that administered counseling alone,⁸² or with the provision of cleaning supplies,⁸³ found no significant effects of the intervention on children's blood lead levels. 

A retrospective cohort study of children with blood lead of 20-24 µg/dL found that a one-time in-home educational visit was associated with a greater reduction in blood lead after six months, compared with households that did not receive an educational visit (-4.2 µg/dL vs. -1.2 µg/dL, p<0.001).⁸⁴

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