This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: A researcher consented 400 subjects, but 12 dropped out of the study before it was completed. The ... (Read 87 times)

bio_gurl

  • Hero Member
  • *****
  • Posts: 524
on: Jul 8, 2018
A researcher consented 400 subjects, but 12 dropped out of the study before it was completed. The rest finished the study. What was the sample retention rate?
 
  a. 388
  b. 38.8
  c. 3
  d. 97

Question 2

A researcher consented 75 subjects, but 15 dropped out of the study while it was still in progress. What was the sample attrition rate?
 
  a. 15
  b. 15
  c. 20
  d. 75


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

micaelaswann

  • Sr. Member
  • ****
  • Posts: 314
Reply #1 on: Jul 8, 2018
Answer to Question 1

ANS: D
Sample retention rate formula = number subjects completing study  sample size  100.

Answer to Question 2

ANS: C
Sample attrition rate formula = number subjects withdrawing  sample size  100.
For example, if a study had a sample size of 160 and 40 people withdrew from the study, the attrition rate would be 25.


bio_gurl

  • Member
  • Posts: 524
Reply 2 on: Jul 8, 2018
:D TYSM

Joy Chen

  • Member
  • Posts: 354
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

Once thought to have neurofibromatosis, Joseph Merrick (also known as "the elephant man") is now, in retrospect, thought by clinical experts to have had Proteus syndrome. This endocrine disease causes continued and abnormal growth of the bones, muscles, skin, and so on and can become completely debilitating with severe deformities occurring anywhere on the body.

Did you know?

The word drug comes from the Dutch word droog (meaning "dry"). For centuries, most drugs came from dried plants, hence the name.

Did you know?

Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.

Did you know?

The types of cancer that alpha interferons are used to treat include hairy cell leukemia, melanoma, follicular non-Hodgkin's lymphoma, and AIDS-related Kaposi's sarcoma.

Did you know?

Stevens-Johnson syndrome and Toxic Epidermal Necrolysis syndrome are life-threatening reactions that can result in death. Complications include permanent blindness, dry-eye syndrome, lung damage, photophobia, asthma, chronic obstructive pulmonary disease, permanent loss of nail beds, scarring of mucous membranes, arthritis, and chronic fatigue syndrome. Many patients' pores scar shut, causing them to retain heat.

A study by Seehausen and van Alphen involving the effects of male coloration on female choice in Afr A study by Seehausen and van Alphen involving the effects of male coloration on female choice in Afr
Field research on free-living primates allows primatologists to study patterns of behavior in the se Field research on free-living primates allows primatologists to study patterns of behavior in the se
Results of the study by Laruelle et al. (1996) Results of the study by Laruelle et al. (1996)
Researchers must inform potential participants of a study's procedures so that consent may be o Researchers must inform potential participants of a study's procedures so that consent may be o
Eugène Delacroix, Study for The Death of Sardanapalus. Eugène Delacroix, Study for The Death of Sardanapalus.
Ramey's study, children from poverty-level families IQ experiment Ramey's study, children from poverty-level families IQ experiment
Video: Global warming and its effect on climate change

For a complete list of videos, visit our video library