Question 4:

Dr. Wrigley and Dr. Roxy conducted a study and found that the mortality rate among adults who were overweight (BMI 25.0 but <30) for at least 10 years was 28 per 100,000 person-years in 2020, whereas the mortality rate among adults who never had a BMI 25 was 20 per 100,000 person-years.

What is the relative rate (rate ratio) of mortality for adults who were overweight (BMI 25.0 but <30) for at least 10 years compared to those who never had a BMI 25? Please round your answer to the 10th decimal place.