![subject](/tpl/images/cats/biologiya.png)
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
![ansver](/tpl/images/cats/User.png)
Answers: 1
![](/tpl/images/ask_question.png)
![](/tpl/images/ask_question_mob.png)
Another question on Biology
![question](/tpl/images/cats/biologiya.png)
Biology, 21.06.2019 13:30
One of the methods used to reduce energy use is: a. energy efficiency c. energy conservation b. energy reservation d. energy holding select the best answer from the choices provided a b c d i know the answer is not option a
Answers: 1
![question](/tpl/images/cats/biologiya.png)
Biology, 21.06.2019 15:00
Which phrases describe an extrusive rock? check all that apply. fine texture cooled slowly small crystal size found deep underground different, easily observed minerals
Answers: 2
![question](/tpl/images/cats/biologiya.png)
Biology, 22.06.2019 05:20
Match the description of each organism to the appropriate category
Answers: 2
![question](/tpl/images/cats/biologiya.png)
Biology, 22.06.2019 05:30
If a strand of dna has 35% thymine. what is the percentage of cytosine, adenine, guanine?
Answers: 3
You know the right answer?
To test the efficacy of a health education program in reducing the risk of foodborne and waterborne...
Questions
![question](/tpl/images/cats/mat.png)
Mathematics, 13.09.2020 14:01
![question](/tpl/images/cats/mat.png)
Mathematics, 13.09.2020 14:01
![question](/tpl/images/cats/mat.png)
Mathematics, 13.09.2020 14:01
![question](/tpl/images/cats/mat.png)
Mathematics, 13.09.2020 14:01
![question](/tpl/images/cats/mat.png)
Mathematics, 13.09.2020 14:01
![question](/tpl/images/cats/mat.png)
Mathematics, 13.09.2020 14:01
![question](/tpl/images/cats/mat.png)
Mathematics, 13.09.2020 14:01
![question](/tpl/images/cats/mat.png)
Mathematics, 13.09.2020 14:01
![question](/tpl/images/cats/en.png)
English, 13.09.2020 14:01
![question](/tpl/images/cats/mat.png)
Mathematics, 13.09.2020 14:01
![question](/tpl/images/cats/istoriya.png)
History, 13.09.2020 14:01
![question](/tpl/images/cats/mat.png)
Mathematics, 13.09.2020 14:01
![question](/tpl/images/cats/mat.png)
Mathematics, 13.09.2020 14:01
![question](/tpl/images/cats/mat.png)
Mathematics, 13.09.2020 14:01
![question](/tpl/images/cats/mat.png)
Mathematics, 13.09.2020 14:01
![question](/tpl/images/cats/istoriya.png)
History, 13.09.2020 14:01
![question](/tpl/images/cats/mat.png)
Mathematics, 13.09.2020 14:01
![question](/tpl/images/cats/en.png)
English, 13.09.2020 14:01
![question](/tpl/images/cats/mat.png)
Mathematics, 13.09.2020 14:01
![question](/tpl/images/cats/geografiya.png)
Geography, 13.09.2020 14:01