Wilson Jonathan, Pivetz Tim, Ashley Peter, Jacobs David, Strauss Warren, Menkedick John, Dixon Sherry, Tsai Hsing-Chuan, Brown Vincent, Friedman Warren, Clark Scott
National Center for Healthy Housing, Columbia, 10227 Wincopin Circle, Suite 200, Columbia, MD 21044, USA.
Environ Res. 2006 Oct;102(2):237-48. doi: 10.1016/j.envres.2006.04.007. Epub 2006 Jun 5.
The Evaluation of the HUD Lead-Based Paint Hazard Control Grant Program (Evaluation) was a HUD-funded study of the effectiveness of lead hazard control (LHC) treatments conducted by 14 grantees in communities across the country. A stratified random sampling scheme was used to select treated units at four grantee sites for continued environmental assessment at 6 years post-intervention. The study compared the relative effectiveness after 6 years of the different classes of interventions used by the grantees, after controlling for such factors as housing conditions and characteristics and resident and neighborhood characteristics. Geometric mean dust-lead levels on floors and window sills were 11% and 23% lower, respectively, at 6 years post-intervention than at any preceding point following the intervention. Although geometric mean window trough dust-lead levels were slightly higher at 6 years post-intervention than at other post-intervention time periods, they were still over 75% lower than before intervention. Treatment at more-intensive levels was associated with lower window sill and window trough dust-lead levels; however, statistical modeling found no significant difference in floor dust-lead loadings over time between the levels of treatment; however, significant differences in window sill and window trough dust-lead levels between treatment levels were evident. Findings from the 6-Year Extension study indicate that across all grantees and treatment strategies the treatments applied were effective at significantly reducing environmental lead levels on floors, window sills, and window troughs at least 6 years following the intervention.
住房和城市发展部基于铅涂料危害控制的补助计划评估（“评估”）是一项由住房和城市发展部资助的研究，旨在研究全国14个受助方在社区开展的铅危害控制（LHC）处理措施的有效性。采用分层随机抽样方案，在4个受助方地点选择经过处理的单元，以便在干预后6年进行持续的环境评估。该研究在控制住房条件和特征以及居民和社区特征等因素后，比较了受助方使用的不同类别的干预措施在6年后的相对有效性。干预后6年，地板和窗台上的几何平均粉尘铅含量分别比干预后的任何先前时间点低11%和23%。尽管干预后6年窗槽粉尘铅含量的几何平均值略高于其他干预后时间段，但仍比干预前低75%以上。更高强度的处理与较低的窗台和窗槽粉尘铅含量相关；然而，统计模型发现不同处理水平下地板粉尘铅负荷随时间没有显著差异；不过，不同处理水平之间窗台和窗槽粉尘铅含量的显著差异是明显的。6年扩展研究的结果表明，在所有受助方和处理策略中，所应用的处理措施在干预后至少6年能有效显著降低地板、窗台和窗槽的环境铅含量。
