Author Question: The prevalence of PTSD among U.S. soldiers who served in the Vietnam War is about one in ______. ... (Read 116 times)

olgavictoria · **on:** Jun 22, 2018

The prevalence of PTSD among U.S. soldiers who served in the Vietnam War is about one
in ______.

a. two c. four
b. three d. five

Question 2

Identify the most important limitation of the survey method of epidemiological research.

a. An entire population cannot be studied.
b. They can only make suggestions about causal influences.
c. Samples can never be entirely randomized.
d. Behavior of groups can quickly change.