An assessment of the impact of recommended anesthesia work area cleaning procedures on intraoperative SARS-CoV-2 contamination, a case-series analysis

If that were so for 3 patients (i.e., there are 6 differences that aren't both zero valued), P = 0.016. [...]the basis for our selection of N = 9 patients was that this provided for up to 3 patients to have 0 of 12 samples positive after cleaning. The exact 95% confidence interval for the ratios of the proportion of samples positive for nucleic acid detection for anesthesia work area reservoirs during the process of patient care vs. other environmental sites was obtained by inverting the two-sided test (StaXact-12, Cytel, Cambridge MA). [...]recommended anesthesia work area cleaning procedures are associated with negligible SARS-CoV-2 nucleic acid transmission, and UV-C is associated with reduced environmental SARS-CoV-2 detection.