A NON-PARAMETRIC FRAMEWORK FOR ANALYZING SPATIAL HETEROGENEITY AND CONTAMINATION PATHWAYS IN HEALTHCARE ENVIRONMENTS Article Swipe
Background: The systematic management of microbial bioburden in Class C healthcare cleanrooms is a critical factor in patient safety. Standard environmental monitoring often overlooks the complex spatial and statistical relationships of contamination. This study applies a rigorous statistical framework to a comprehensive environmental monitoring dataset to accurately map contamination risk. Methods: A cross-sectional analysis was performed on 318 microbial surface samples from 28 distinct operational locations in a Class C facility. Colony Forming Unit (CFU) data were analyzed using non-parametric statistics due to non-normal distribution, confirmed by Shapiro-Wilk tests on all locations with sufficient sample size (n=12). The Kruskal-Wallis test with Dunn's post-hoc analysis was used for group comparisons. Spearman's correlation was used to assess inter-location relationships. Results: Significant spatial heterogeneity in microbial contamination was confirmed (p<0.0001). Dunn's test identified CP C 11 W as the location with the highest contamination burden (mean CFU=12.17). The most statistically robust contrasts were observed when comparing high-burden sites against the cleanest location, CP C 32 WNme (mean CFU=0.67), which serves as a control benchmark. Multiple high-burden locations, including CP C 11 W and CP C 30 NCu, were found to be significantly more contaminated than this benchmark. No Spearman correlations survived the strict Bonferroni correction; however, the relationship between CP C 11 W and CP C 45 Wif (r=0.882, p<0.05) approached the significance threshold, suggesting a potential pathway requiring further investigation. Conclusions: Microbial contamination within the facility is spatially patterned, not random. The analysis provides a definitive hierarchy of risk, highlighting CP C 11 W as the primary target for enhanced sanitation. While correlational pathways could not be statistically confirmed, near-significant results provide a clear direction for future, more targeted sampling to validate operational links between zones. Peer Review History: Received 5 June 2025; Reviewed 12 July 2025; Accepted 24 August; Available online 15 September 2025 Academic Editor: Dr. Asia Selman Abdullah, Pharmacy institute, University of Basrah, Iraq, [email protected] Reviewers: Dr. Alfonso Alexander Aguileral, University of Veracruz, Mexico, [email protected] Dr. Ali Abdullah A. Al-Mehdar, University of Basrah, Iraq, [email protected]
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A NON-PARAMETRIC FRAMEWORK FOR ANALYZING SPATIAL HETEROGENEITY AND CONTAMINATION PATHWAYS IN HEALTHCARE ENVIRONMENTSWork title
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2025Year of publication
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2025-09-15Full publication date if available
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Mostafa Essam EissaList of authors in order
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https://ujpronline.com/index.php/journal/article/download/1390/1941Direct link to full text PDF
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