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Validation of the WHI Brief Physical Activity Questionnaire among Women Diagnosed with Breast Cancer

Published Web Location

https://doi.org/10.5993/ajhb.31.2.8
Abstract

Objective

To investigate the psychometric properties of the physical activity (PA) measure of the Women's Health Initiative (WHI).

Methods

Women diagnosed with breast cancer and enrolled in the Women's Healthy Eating and Living Study (average age 55 years) wore an accelerometer for 1 week and completed the 7-day Physical Activity Recall (PAR) and brief WHI measure.

Results

Both self-reports correlated 0.73 with the accelerometer and had 100% sensitivity for meeting the current PA guideline, but specificity was significantly higher for the PAR.

Conclusions

The WHI measure had comparable validity, sensitivity, and measurement bias compared to the widely accepted PAR.

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