« previous next »

Author Question: A prospective cohort study is also called 1. Longitudinal 2. Historical 3. Case-control 4. ... (Read 32 times)

DyllonKazuo

  • Hero Member
  • *****
  • Posts: 565
on: Jul 8, 2018
A prospective cohort study is also called
 
  1. Longitudinal
  2. Historical
  3. Case-control
  4. Cross-sectional

Question 2

Voters have recently decided to have fluoride added to the city water system. Epidemiologists wanting to study the effect of fluoride on dental caries would be conducting a
 
  1. Ecologic study
  2. Double-blind study
  3. Community trial
  4. Screening


miss.ashley

  • Sr. Member
  • ****
  • Posts: 371
Reply #1 on: Jul 8, 2018
Answer to Question 1

ANS: 1

Answer to Question 2

ANS: 3


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

In 1885, the Lloyd Manufacturing Company of Albany, New York, promoted and sold "Cocaine Toothache Drops" at 15 cents per bottle! In 1914, the Harrison Narcotic Act brought the sale and distribution of this drug under federal control.

Did you know?

Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.

Did you know?

More than 30% of American adults, and about 12% of children utilize health care approaches that were developed outside of conventional medicine.

Did you know?

After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.

Did you know?

Ether was used widely for surgeries but became less popular because of its flammability and its tendency to cause vomiting. In England, it was quickly replaced by chloroform, but this agent caused many deaths and lost popularity.

Cataract extraction. The procedure involves a surgical removal of a cataract lens and its replacemen Cataract extraction. The procedure involves a surgical removal of a cataract lens and its replacemen
Results of the study by Laruelle et al. (1996) Results of the study by Laruelle et al. (1996)
Some ignition coils are electrically connected, called married (top figure), whereas others use ... Some ignition coils are electrically connected, called married (top figure), whereas others use ...
The Prison Study The Prison Study
The Prison Study The Prison Study
Alternative splicing of pre-mRNA for a muscle protein called α-tropomyosin Alternative splicing of pre-mRNA for a muscle protein called α-tropomyosin
Video: Metaphase I Animation

For a complete list of videos, visit our video library