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Suppose a study of incidence rates of blindness among insulin-dependent diabetics reported that the annual incidence rate of blindness per year was 0.68% among 30- to 39-year-old male insulin-dependent diabetics (IDDM) and 0.75% among 30- to 39-year-old female insulin-dependent diabetics. USE SALT (a) If a group of 160 IDDM 30-to 39-year-old men is followed, what is the probability that exactly 2 will go blind over a 1-year period? (Round your answer to four decimal places.) (b) If a group of 160 IDDM 30-to 39-year-old women is followed, what is the probability that at least 2 will blind over a 1-year period? (Round your answer to four decimal places.) (c) What is the probability that a 30-year-old IDDM male patient will go blind over the next 10 years? (Round your answer to four decimal places.) (d) After how many years of follow-up would we expect the cumulative incidence of blindness to be 10% among 30-year-old IDDM women, if the incidence rate remains constant over time? (Round your answer to one decimal place.) years (e) What does cumulative incidence mean, in words, in the context of the problem in part (d)? The cumulative incidence discovered in part (d) means that after [ years, there is a 10% probability that a woman with IDDM-Select--become blind.

Suppose a study of incidence rates of blindness among insulin-dependent diabetics reported that the annual incidence rate of blindness per year was 0.68% among 30- to 39-year-old male insulin-dependent diabetics (IDDM) and 0.75% among 30- to 39-year-old female insulin-dependent diabetics. USE SALT (a) If a group of 160 IDDM 30-to 39-year-old men is followed, what is the probability that exactly 2 will go blind over a 1-year period? (Round your answer to four decimal places.) (b) If a group of 160 IDDM 30-to 39-year-old women is followed, what is the probability that at least 2 will blind over a 1-year period? (Round your answer to four decimal places.) (c) What is the probability that a 30-year-old IDDM male patient will go blind over the next 10 years? (Round your answer to four decimal places.) (d) After how many years of follow-up would we expect the cumulative incidence of blindness to be 10% among 30-year-old IDDM women, if the incidence rate remains constant over time? (Round your answer to one decimal place.) years (e) What does cumulative incidence mean, in words, in the context of the problem in part (d)? The cumulative incidence discovered in part (d) means that after [ years, there is a 10% probability that a woman with IDDM-Select--become blind.

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Ophthalmology, Diabetes Suppose a study of incidence rates of blindness among insulin-dependent diabetics reported that the annual incidence rate of blindness per year was 0.68% among 30- to 39-year-old male insulin-dependent diabetics (IDDM) and 0.75% among 30- to 39-year-old female insulin-dependent diabetics. USE SALT (a) If a group of 160 IDDM 30- to 39-year-old men is followed, what is the probability that exactly 2 will go blind over a 1-year period? (Round your answer to four decimal places.) (b) If a group of 160 IDDM 30- to 39-year-old women is followed, what is the probability that at least 2 will go blind over a 1-year period? (Round your answer to four decimal places.) (c) What is the probability that a 30-year-old IDDM male patient will go blind over the next 10 years? (Round your answer to four decimal places.) (d) After how many years of follow-up would we expect the cumulative incidence of blindness to be 10% among 30-year-old IDDM women, if the incidence rate remains constant over time? (Round your answer to one decimal place.) years (e) What does cumulative incidence mean, in words, in the context of the problem in part (d)? The cumulative incidence discovered in part (d) means that after years, there is a 10% probability that a woman with IDDM ---Select---become blind.
Transcribed Image Text:Ophthalmology, Diabetes Suppose a study of incidence rates of blindness among insulin-dependent diabetics reported that the annual incidence rate of blindness per year was 0.68% among 30- to 39-year-old male insulin-dependent diabetics (IDDM) and 0.75% among 30- to 39-year-old female insulin-dependent diabetics. USE SALT (a) If a group of 160 IDDM 30- to 39-year-old men is followed, what is the probability that exactly 2 will go blind over a 1-year period? (Round your answer to four decimal places.) (b) If a group of 160 IDDM 30- to 39-year-old women is followed, what is the probability that at least 2 will go blind over a 1-year period? (Round your answer to four decimal places.) (c) What is the probability that a 30-year-old IDDM male patient will go blind over the next 10 years? (Round your answer to four decimal places.) (d) After how many years of follow-up would we expect the cumulative incidence of blindness to be 10% among 30-year-old IDDM women, if the incidence rate remains constant over time? (Round your answer to one decimal place.) years (e) What does cumulative incidence mean, in words, in the context of the problem in part (d)? The cumulative incidence discovered in part (d) means that after years, there is a 10% probability that a woman with IDDM ---Select---become blind.
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