Use the information below for questions 2-6

Below are the results of a prospective cohort study examining the relationship between sleep disturbances and bone fractures. A total of 1000 patients aged 50-80 years were recruited and reported sleep problems using a Quality of Life questionnaire. They were followed over a 10-year observation period to collect data on falls and fractures.

	Reported at least 1 bone fracture	No bone fractures	Total
Sleep disturbances	165	169	334
No or minimal sleep disturbances	286	380	666
Total	451	549	1000

What is the relative risk of bone fracture associated with sleep disturbances in this study? Report your answer to the 10^th decimal place.

Flag question: Question 3Question 31 pts

What is the amount of bone fracture risk (cumulative incidence) that is attributable to sleep disturbances in this study population (the attributable risk)? Report your answer rounded to the 1000^th decimal place (3 decimal places).

Flag question: Question 4Question 41 pts

What is the etiologic fraction of bone fracture risk that is attributable to sleep disturbances in this study population (the attributable risk %)? Report your answer as a % (multiplied by 100) rounded a whole integer (no decimal places).

Flag question: Question 5Question 51 pts

You are given information that the cumulative incidence (risk) of bone fracture among adults aged 50-80 over 10 years in the United States is 0.500. Applying the study results and the risk of bone fracture in the larger population (the United States), what is the incidence of bone fractures in the United States (population-attributable risk) that is attributed to sleep disturbances? Report your answer rounded to the 1000^th decimal place (3 decimal places).

Flag question: Question 6Question 61 pts

Given the information that the cumulative incidence (risk) of bone fracture among adults aged 50-80 over 10 years in the United States is 0.500, calculate the proportion of bone fracture in the United States that is attributed to sleep disturbances (the population etiologic fraction). Report your answer as a % (multiplied by 100) rounded a whole integer (no decimal places).