Fig. 4.

Associations between water leaks reported by building maintenance workers or long-tenured workers and observational dampness scores. Boxplot: box = 25th, 50th (median), and 75th percentiles of observational dampness scores; lower and upper whiskers = 10th and 90th percentiles; closed circles = outliers; and an open circle inside the box = arithmetic mean. **0.01 < P ≤ 0.05 using the Kruskal–Wallis nonparametric ANOVA with a multiple comparison test (Dunn’s method)