Comparing Physical Activity Questionnaires in Breast Cancer Survivors
Author Information
Author(s): Marilyn Johnson-Kozlow, James F. Sallis, Elizabeth A. Gilpin, Cheryl L. Rock, John P. Pierce
Primary Institution: San Diego State University Research Foundation
Hypothesis
The study aims to compare the validity and measurement bias of the IPAQ and the 7-Day PAR among women diagnosed with breast cancer.
Conclusion
The 7-Day Physical Activity Recall (PAR) was found to be superior to the International Physical Activity Questionnaire (IPAQ) in terms of validity and measurement bias.
Supporting Evidence
- The validity correlation of the PAR was significantly higher than the IPAQ (0.73 vs. 0.33).
- The PAR had better sensitivity (100% vs. 71%) and specificity (84% vs. 59%) than the IPAQ.
- The IPAQ overestimated total physical activity by 247%, while the PAR overestimated it by 13%.
- Both self-report measures resulted in a significantly greater proportion of women meeting the guideline than the accelerometer.
Takeaway
This study looked at two ways to ask women with breast cancer about their physical activity, and found that one way was much better at getting accurate answers.
Methodology
Women diagnosed with breast cancer wore an accelerometer for one week and then completed either the IPAQ or the PAR.
Potential Biases
The IPAQ may be more vulnerable to recall bias compared to the PAR.
Limitations
The study relied on a convenience sample and participants were not randomly assigned to complete either the IPAQ or PAR.
Participant Demographics
Participants were women diagnosed with breast cancer, average age 57 years, mostly non-Hispanic white with at least a college education.
Statistical Information
P-Value
p<0.001
Statistical Significance
p<0.001
Digital Object Identifier (DOI)
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