Fig. 4From: The effect of seasonal and extreme floods on hospitalizations for Legionnaires’ disease in the United States, 2000–2011Soil moisture and precipitation were the most highly weighted flood-indicator variables assessed in the multimodel inference analysis; these variables were highly weighted in 98 and 96% of the candidate models, respectively. The red line indicates where variables are highly weighted in at least 80% of the candidate models; variables that exceed this importance threshold are included in the final modelBack to article page