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


CONCLUSIONS
The PAR was superior to the IPAQ in terms of validity, measurement bias, and screening statistics.
Johnson-Kozlow
Marilyn
M
San Diego State University Research Foundation, 9245 Sky Park Court, San Diego, CA 92123, USA. mfjohnson@projects.sdsu.edu
Sallis
James F
JF
Gilpin
Elizabeth A
EA
Rock
Cheryl L
CL
Pierce
John P
JP