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The figure below shows the per capita milk consumption and the age adjusted prostate cancer incidence in different countries.
120
United States
100
Australia
80
Brazil
Age-adjusted prostate cancer incidence
per 100,000 men
60
.
Sweden
40
Ireland
China
Thailand
Philippines
Korea
.
Spain
20
Poland
0
0
0
100
200
800
900
1000
300 400 500 600 700
Per capita milk consumption (g/d)
What is the study design?
A. Randomized controlled trial
B.Ecological Study
C.Case-control study
°D. Cohort Study


The Figure Below Shows The Per Capita Milk Consumption And The Age Adjusted Prostate Cancer Incidence In Different Countries 120 United States 100 Australia 80 class=

Sagot :

Answer:

A randomized controlled trial