9 ST Quantitative Design

Question 1

1. Kendall randomly assigned postsurgical patients to aromatherapy (oil of peppermint) or usual care, to assess effects on nausea.

A Experimental,
B Quasi-experimental, or
C Nonexperimental

Answer 1

ANSWER: A Experimental
There was an intervention, and people were assigned to the treatment group or to a control group at random

Question 2

2. Madden compared levels of agitation in two groups of nursing home residents, one group living in a home where they received a daily foot massage for 2 weeks, the other in a home without the massages.
   A Experimental,
   B Quasi-experimental, or
   C Nonexperimental

Answer 2

ANSWER: B Quasi-experimental
There was an intervention but subjects were not assigned to groups at random—a nonequivalent control group design.

Question 3

3. Dean studied daily pain ratings over a 10-week period for a group of patients with rheumatoid arthritis who began a Tai Chi program in week 5.

A Experimental,
B Quasi-experimental, or
C Nonexperimental

Answer 3

ANSWER: B Quasi-experimental
There was an intervention but there was only one group without any randomization —this was a time series design.

Question 4

4. Abraham compared pregnant women who did or did not have a miscarriage in terms of subsequent marital satisfaction.

A Experimental,
B Quasi-experimental, or
C Nonexperimental

Answer 4

ANSWER: C Nonexperimental
There was no intervention: Women could not be assigned at random to a miscarriage—this was a cohort design.

Question 5

5. Theriault compared patients who were assigned at random to a program to manage urinary incontinence or to a wait list group who received the program 6 months later.

A Experimental,
B Quasi-experimental, or
C Nonexperimental

Answer 5

ANSWER: A Experimental
There was an intervention, and people were assigned to the treatment group or to a wait-list control group at random.