Number of participants Normal weight Overweight/obese Negligible DDT exposure (Not exposed group) 99 1 Low DDT exposure (Exposed group 1) 95 5 Median DDT exposure (Exposed group 2) 90 10 High DDT exposure (Exposed group 3) 70 30 Based on the data above, the environmental epidemiologists concluded that human exposure to DDT led to overweight or obesity of adults. Odds Ratio Exposed group 1 is 2 Exposed group 2 is 4 Exposed group 3 is 6 Risk Ratio Exposed group 1 is 5 Exposed group 2 is 11 Exposed group 3 is 30 Calculate the ratio between the two groups