Problem
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.
a) 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.
b) What is the attributable rate for adults who experience and overweight BMI for at least 10 years as compared to those who never had a BMI ≥ 25?