× Didn't find what you were looking for? Ask a question
Top Posters
Since Sunday
d
4
N
3
3
R
3
k
3
o
3
Z
3
j
3
s
3
d
3
J
3
1
3
New Topic  
Lananicole98 Lananicole98
wrote...
Posts: 614
Rep: 0 0
6 years ago
An investigator measures blood pressure in a group of college students and then repeats these measurements every year for 20 years. This is an example of
 
  A) a longitudinal study.
  B) a cross-sectional study.
  C) an experimental study.
  D) a clinical trial.
Read 52 times
1 Reply

Related Topics

Replies
wrote...
6 years ago
A
New Topic      
Explore
Post your homework questions and get free online help from our incredible volunteers
  1503 People Browsing
Related Images
  
 246
  
 99
  
 294
Your Opinion
Which 'study break' activity do you find most distracting?
Votes: 824