Biology, 04.11.2021 21:30 marcaveli294
To test the efficacy of a health education program in reducing the risk of foodborne and waterborne diseases, the residents of two Peruvian villages were given an intensive health education program. At the end of two years, the incidence rates of important water-borne and food-borne diseases in these villages were compared with those in two similar control villages without any education program. Identify which of the following types of study designs most appropriately characterizes each of the situations described above.
a. Cross-sectional study
b. Case-control study
c. Prospective cohort study
d. Historical prospective cohort study
e. Clinical trial
f. Community trial
Answers: 1
Biology, 22.06.2019 08:50
Why is earth's outer core hotter than earth’s oceanic crust? earth’s oceanic crust is denser than earth’s outer core is. earth’s oceanic crust has lava flowing from the mantle. earth’s outer core has a composition of solid iron and nickel. earth’s outer core is deeper within earth than oceanic crust is.
Answers: 1
Biology, 22.06.2019 21:30
At what point in the eukaryotic cell cycle does mitosis occur
Answers: 1
Biology, 22.06.2019 23:00
What is the ratio of carbon hydrogen and oxygen in a carbohydrate?
Answers: 2
Biology, 23.06.2019 02:00
Acid rain throughout the northeast united states has lowered the ph of many ponds and lakes. the lowered ph will eventually result in the death of many aquatic animals. compare the map of the u.s. with the ph tolerance range for the organisms listed. based on the tolerances seen here, which aquatic organisms are least likely to survive in the northeastern states?
Answers: 1
To test the efficacy of a health education program in reducing the risk of foodborne and waterborne...
English, 18.03.2021 03:10
Mathematics, 18.03.2021 03:10
Biology, 18.03.2021 03:10
Biology, 18.03.2021 03:10
History, 18.03.2021 03:10
Mathematics, 18.03.2021 03:10
Mathematics, 18.03.2021 03:10