FIG 3 .

Associations among measures of microbiota, skin physiology, and hygiene effects. Results of statistical comparisons among eight measures are illustrated. Relationships between skin metrics and bacterial community composition were assessed by matching the swab sample collected from the back of the same hand in which the skin metrics were observed and using Mantel tests with Spearman correlation. Bacterial community composition and culturable bacterial level results from glove-based samples were correlated using Mantel tests with Spearman correlation. Correlations among the skin measures, plate counts, and log₁₀ reductions for the time point immediately after hygiene treatment were identified using linear regression, which reports significance as well as the direction of correlation (positive or negative). Bacterial community composition is a categorical measure, not a numerical metric, so only data for the significance (not direction) of correlations are reported. n = 50 for all measures.