You are investigating the effect of texting on arthritis. You enroll a cohort of 500 adults ages 65 and older and record their frequency of texting. You follow people over 10 years to collect information on arthritis. At baseline, 300 people in your cohort texted frequently. Of these mothers, 52 developed arthritis. Another 47 people developed arthritis among those not exposed. Calculate the relative risk of arthritis among those exposed to frequent texting and those who were not exposed to frequent texting. Round to the tenth decimal place.

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