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.
Experimental evidence of the effect of allelochemicals on plant production.
Experimental Evidence for Infrared Radiation
When the number of miles traveled is considered, drivers under 25 years of age and those over 70 are ...
Use of squid giant axons for studies of neural transmission
Cross-Sectional Studies
Cross-Sectional Studies