The following decision tree was obtained by data mining from 10,000 medical records concerning factors that may influence the incidence of a certain disease. The leaves of the decision tree reflect a low/high propensity to develop the disease where a low incidence is <50% of the individuals in that classification, and a high incidence is >50%. The percentage is shown along with the low/high classification. Based on this decision tree, what would you conclude about the relative weight of age, obesity, or high blood pressure as a risk factor for developing this disease?