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Comparative validation of the IPAQ and the 7-Day PAR among women diagnosed with breast cancer.

  • Author(s): Johnson-Kozlow, Marilyn
  • Sallis, James F
  • Gilpin, Elizabeth A
  • Rock, Cheryl L
  • Pierce, John P
  • et al.
Abstract

Background

The criterion-related validity and measurement bias of the long form of the International Physical Activity Questionnaire (IPAQ) was compared to the 7-Day Physical Activity Recall (PAR).

Methods

Participants were women who have been diagnosed with breast cancer and enrolled in the ongoing Women's Healthy Eating and Living Study. Women (N = 159, average age 57 years) wore an accelerometer for one week and then completed the IPAQ or the PAR.

Results

The validity correlation of the PAR was significantly higher (p < 0.001) than the IPAQ (0.73 vs. 0.33, respectively). The PAR and IPAQ overestimated total physical activity by 13% vs. 247%, respectively. The PAR had better sensitivity (p = 0.14) and specificity (p < .01) than the IPAQ (100% vs. 71% and 84% vs. 59%, respectively) in predicting attainment of the ACSM physical activity guideline.

Conclusion

The PAR was superior to the IPAQ in terms of validity, measurement bias, and screening statistics.

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