Prospective and retrospective studies are both considered:
A) experimental studies.
B) longitudinal studies.
C) clinical trials.
D) correlational studies.
Question 2
A risk factor is any characteristic or condition that
A) occurs with a lower frequency in peole with a disease than in people freee from that disease.
B) occurs with a higher frequency in people with a disease than in people free from that disease.
C) is any factor that has been demonstrated to be responsible for causing a disease.
D) is a measure of the dependent variable that is utilized in an experimental design.
Studies in landscape ecology indicate that interactions between biotic and abiotic processes are dep
The approval of a new drug is a four-stage process: (1) preclinical investigation, (2) clinical inve
buffers commonly employed for biochemical studies
Use of squid giant axons for studies of neural transmission
My brain in social media and studies
Sleep Studies