Berkenstadt et al used the Perceived Personal Control (PPC) questionnaire to evaluate the adequacy of genetic counseling in helping a patient understand his or her condition. The same concepts can be applied to other medical conditions. The authors are from Sheba Medcal Center and Tel-Aviv University in Israel.
NOTE: The initial questionnaire was formulated for genetic counseling. The following statements have been modified to be more generic.
The instrument consists of 9 statements.
Responses
Points
disagree
0
somewhat agree
1
completely agree
2
total score =
= SUM(points for all 9 statements)
average score =
= (total score) / 9
If not all of the statements were considered applicable or were not answered, then the total number answered is substituted in place of the 9 in previous 2 equations.
Interpretation:
• minimum total score: 0
• maximum total score: 18
• maximum average score: 2
• The higher the score the greater the perception of personal control.
• A low score would identify a patient who might benefit from additional counseling.
Limitations: The response options are somewhat limited. An alternative response scoring system might be:
Responses
Points
strongly disagree
0
somewhat disagree
1
neutral
2
somewhat agree
3
somewhat disagree
4
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