Geographic distribution of Environmental Relative Moldiness Index molds in USA homes
| Autor: | Peter J. Ashley, Stephen Vesper, Warren Friedman, Jennie Wakefield, Gary Dewalt, David Cox |
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| Rok vydání: | 2010 |
| Předmět: |
Principal Component Analysis
Index (economics) Article Subject Geography lcsh:Public aspects of medicine Health Toxicology and Mutagenesis Public Health Environmental and Occupational Health Air Microbiology Fungi lcsh:RA1-1270 Dust Health Surveys Polymerase Chain Reaction United States Geographic distribution Distribution pattern Air Pollution Indoor Statistics Principal component analysis Housing Regression Analysis Research Article |
| Zdroj: | Journal of Environmental and Public Health Journal of Environmental and Public Health, Vol 2011 (2011) |
| ISSN: | 1687-9813 |
| Popis: | Objective. The objective of this study was to quantify and describe the distribution of the 36 molds that make up the Environmental Relative Moldiness Index (ERMI).Materials and Methods. As part of the 2006 American Healthy Homes Survey, settled dust samples were analyzed by mold-specific quantitative PCR (MSQPCR) for the 36 ERMI molds. Each species' geographical distribution pattern was examined individually, followed by partitioning analysis in order to identify spatially meaningful patterns. For mapping, the 36 mold populations were divided into disjoint clusters on the basis of their standardized concentrations, and First Principal Component (FPC) scores were computed.Results and Conclusions. The partitioning analyses failed to uncover a valid partitioning that yielded compact, well-separated partitions with systematic spatial distributions, either on global or local criteria. Disjoint variable clustering resulted in seven mold clusters. The 36 molds and ERMI values themselves were found to be heterogeneously distributed across the United States of America (USA). |
| Databáze: | OpenAIRE |
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