determine diabetes status at the start of the study and then annually over 5 years of follov up by querying the patients' electronic medical records. Study data are presented below. Beta-carotene use Number of people Diabetes at baseline New diabetes case during follow-up 4 YES NO OVERALL 20 20 40 10 thie

Ebk:Nutrition & Diet Therapy
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Author:DEBRUYNE
Publisher:DEBRUYNE
Chapter21: Carbohydrate- Controlled Diets For Diabetes Mellitus
Section: Chapter Questions
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1. Researchers examine the association of beta-carotene supplement use with diabetes. They
identify 20 patients who report regular use of beta-carotene from a local clinic and 20
patients from the same clinic who do not report use of beta-carotene. The researchers
determine diabetes status at the start of the study and then annually over 5 years of follow-
up by querying the patients' electronic medical records. Study data are presented below.
Number of people Diabetes at baseline New diabetes cases
during follow-up
Beta-carotene use
YES
20
4
NO
OVERALL
20
40
2
6.
10
A. What is the prevalence of diabetes in this study population at the start of the study (baseline)?
B. What is the overall incidence rate of diabetes?
Transcribed Image Text:1. Researchers examine the association of beta-carotene supplement use with diabetes. They identify 20 patients who report regular use of beta-carotene from a local clinic and 20 patients from the same clinic who do not report use of beta-carotene. The researchers determine diabetes status at the start of the study and then annually over 5 years of follow- up by querying the patients' electronic medical records. Study data are presented below. Number of people Diabetes at baseline New diabetes cases during follow-up Beta-carotene use YES 20 4 NO OVERALL 20 40 2 6. 10 A. What is the prevalence of diabetes in this study population at the start of the study (baseline)? B. What is the overall incidence rate of diabetes?
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